385 Engine parts are listed for the 2003 Avanti Ii, in 74 part types, covering the 5.7L V8 engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2003 Avanti Ii, the engine covers the internals and hard parts that build compression and keep oil where it belongs — gaskets, bearings, camshafts, lifters, seals and timing components. Most of the listed parts are Camshaft (76 parts), Valve Spring (32 parts) and Crankshaft Seal (18 parts). The other 71 part types cover the remaining 259 parts.
The 2003 Avanti Ii came with a single engine, the 5.7L V8, and every part is verified against it.
22 brands supply engine parts for the 2003 Avanti Ii, led by MELLING (160 parts), ARP (28 parts) and ELRING (28 parts), plus 19 more brands. Quality grades include High Performance, Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2003 Avanti Ii. 58 parts have it, including MELLING MTC7 (Camshaft) and KING ENGINE BEARINGS CS5171BB (Camshaft Bearing). Each part number opens a page with every vehicle that part fits.
Camshaft
High Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING Popular | MTC7 | 🇺🇸 US | High PerformanceClass 1, Excellent Low End Torque and Horsepower | View on Amazon |
| MELLING Popular | MTC8 | 🇺🇸 US | Class 2High Performance | View on Amazon |
| MELLING Popular | 22206 | 🇺🇸 US | Stage 2 LSl High PerformanceNo Warranty | View on Amazon |
| MELLING Popular | CSMTC7 | 🇺🇸 US | High PerformanceIncludes Valve springs | View on Amazon |
| MELLING Popular | CSMTC8 | 🇺🇸 US | Class 2High Performance | View on Amazon |
| MELLING | 22309 | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | 22310 | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | 22207 | 🇺🇸 US | Stage 2 LSl High PerformanceNo Warranty | View on Amazon |
| MELLING | 22323 | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | 22324 | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | 22325 | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | 22326 | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | 22327 | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | 22328 | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | 22422 | 🇺🇸 US | Stage 4 LSHigh Performance | View on Amazon |
| MELLING | 22423 | 🇺🇸 US | Stage 4 LSHigh Performance | View on Amazon |
| MELLING | 22424 | 🇺🇸 US | Stage 4 LSHigh Performance | View on Amazon |
| MELLING | 22425 | 🇺🇸 US | Stage 4 LSHigh Performance | View on Amazon |
| MELLING | 22501 | 🇺🇸 US | Stage 5 LSHigh Performance | View on Amazon |
| MELLING | 22502 | 🇺🇸 US | Stage 5 LSHigh Performance | View on Amazon |
| MELLING | CK22425D | 🇺🇸 US | Stage 4 LSHigh Performance | View on Amazon |
| MELLING | CK22309B | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22310B | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22207D | 🇺🇸 US | Stage 2 LSl High PerformanceChromoly Retainers And Dual Springs | View on Amazon |
| MELLING | CK22325D | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22326D | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22328D | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22422D | 🇺🇸 US | Stage 4 LSHigh Performance | View on Amazon |
| MELLING | CK22423D | 🇺🇸 US | Stage 4 LSHigh Performance | View on Amazon |
| MELLING | CK22424D | 🇺🇸 US | Stage 4 LSHigh Performance | View on Amazon |
| MELLING | CK22501D | 🇺🇸 US | Stage 5 LSHigh Performance | View on Amazon |
| MELLING | CK22502D | 🇺🇸 US | Stage 5 LSHigh Performance | View on Amazon |
| MELLING | CK22206B | 🇺🇸 US | Stage 2 LSl High PerformanceChromoly Retainers And Beehive Springs | View on Amazon |
| MELLING | CK22207B | 🇺🇸 US | Stage 2 LSl High PerformanceChromoly Retainers And Beehive Springs | View on Amazon |
| MELLING | CK22323B | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22324B | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22325B | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22326B | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22327B | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22328B | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22422B | 🇺🇸 US | Stage 4 LSHigh Performance | View on Amazon |
| MELLING | CK22423B | 🇺🇸 US | Stage 4 LSHigh Performance | View on Amazon |
| MELLING | CK22424B | 🇺🇸 US | Stage 4 LSHigh Performance | View on Amazon |
| MELLING | CK22425B | 🇺🇸 US | Stage 4 LSHigh Performance | View on Amazon |
| MELLING | CK22206DT | 🇺🇸 US | Stage 2 LSl High PerformanceNo Warranty | View on Amazon |
| MELLING | CK22501B | 🇺🇸 US | Stage 5 LSHigh Performance | View on Amazon |
| MELLING | CK22502B | 🇺🇸 US | Stage 5 LSHigh Performance | View on Amazon |
| MELLING | CK22309BT | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22310BT | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22207BT | 🇺🇸 US | Stage 2 LSl High PerformanceNo Warranty | View on Amazon |
| MELLING | CK22323BT | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22325BT | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22326BT | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22327BT | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22328BT | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22422BT | 🇺🇸 US | Stage 4 LSHigh Performance | View on Amazon |
| MELLING | CK22423BT | 🇺🇸 US | Stage 4 LSHigh Performance | View on Amazon |
| MELLING | CK22424BT | 🇺🇸 US | Stage 4 LSHigh Performance | View on Amazon |
| MELLING | CK22425BT | 🇺🇸 US | Stage 4 LSHigh Performance | View on Amazon |
| MELLING | CK22206BT | 🇺🇸 US | Stage 2 LSl High PerformanceNo Warranty | View on Amazon |
| MELLING | CK22324BT | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22207DT | 🇺🇸 US | Stage 2 LSl High PerformanceNo Warranty | View on Amazon |
| MELLING | CK22325DT | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22326DT | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22327DT | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22328DT | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
| MELLING | CK22422DT | 🇺🇸 US | Stage 4 LSHigh Performance | View on Amazon |
| MELLING | CK22423DT | 🇺🇸 US | Stage 4 LSHigh Performance | View on Amazon |
| MELLING | CK22424DT | 🇺🇸 US | Stage 4 LSHigh Performance | View on Amazon |
| MELLING | CK22425DT | 🇺🇸 US | Stage 4 LSHigh Performance | View on Amazon |
| MELLING | CK22501DT | 🇺🇸 US | Stage 5 LSHigh Performance | View on Amazon |
| MELLING | CK22502DT | 🇺🇸 US | Stage 5 LSHigh Performance | View on Amazon |
| MELLING | CK22501BT | 🇺🇸 US | Stage 5 LSHigh Performance | View on Amazon |
| MELLING | CK22502BT | 🇺🇸 US | Stage 5 LSHigh Performance | View on Amazon |
| MELLING | CK22327D | 🇺🇸 US | Stage 3 LSHigh Performance | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING Popular | MC1384 | 🇺🇸 US | 3 Bolt Cam | View on Amazon |
This table covers the camshafts that open the valves.
MELLING supplies the 76 Camshaft parts for the 2003 Avanti Ii. MELLING MTC7 carries the "Popular" badge. High Performance and Standard Replacement are all represented, and High Performance alone accounts for 75 parts.
Camshaft & Lifter Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | CLMC1384 | 🇺🇸 US | 3 Bolt Cam | View on Amazon |
This table covers the Camshaft & Lifter kits.
One part is listed for the 2003 Avanti Ii — MELLING CLMC1384.
Camshaft Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS Popular | CS5171BB | 🇺🇸 US | Bimetal (Babbitt) | View on Amazon |
| KING ENGINE BEARINGS | CS5171HPT | 🇺🇸 US | Alecular (Racing Line)High Performance | View on Amazon |
| KING ENGINE BEARINGS | CS5171HP | 🇺🇸 US | alecular (racing line) | View on Amazon |
| KING ENGINE BEARINGS | CS5172HP | 🇺🇸 US | alecular (racing line) | View on Amazon |
| KING ENGINE BEARINGS | CS5172HPT | 🇺🇸 US | alecular (racing line) | View on Amazon |
| KING ENGINE BEARINGS | CS5503HPT | 🇺🇸 US | Alecular (Racing Line)High Performance | View on Amazon |
| KING ENGINE BEARINGS | CS5510BB | 🇺🇸 US | Bimetal (Babbitt) | View on Amazon |
This table covers the Camshaft bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly.
KING ENGINE BEARINGS supplies the 7 Camshaft Bearing parts for the 2003 Avanti Ii. KING ENGINE BEARINGS CS5171BB carries the "Popular" badge.
This group includes KING ENGINE BEARINGS CS5171BB, KING ENGINE BEARINGS CS5171HPT and KING ENGINE BEARINGS CS5171HP and the remaining parts above.
Camshaft Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP | 1341003 | 🇺🇸 US 🇨🇦 CA | Camshaft Sprocket Bolt Kit | View on Amazon |
| ARP | 1341002 | 🇺🇸 US 🇨🇦 CA | For cam retainer plate | View on Amazon |
This table covers the Camshaft bolts.
2 Camshaft Bolt parts for the 2003 Avanti Ii come from ARP.
Listed part numbers: ARP 1341003 and ARP 1341002.
Camshaft Bolt Lock Plate
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | 5461LPK | 🇺🇸 US | High PerformanceNo Warranty | View on Amazon |
This table covers the Camshaft Bolt Lock plates. Typical signs include warpage, cracks, or a plate that no longer locates the assembly. Confirm which plate the notes describe — backing plates, clutch plates and strike plates are different parts.
One part is listed for the 2003 Avanti Ii — MELLING 5461LPK.
Camshaft Gear Installation Tool
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | CSITLS | 🇺🇸 US | No Warranty | View on Amazon |
This table covers the Camshaft Gear Installation tools. This is a service tool, not a wear part — match the application in the notes.
This group shows a single part: MELLING CSITLS.
Camshaft Retainer / Thrust Plate
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular | ES73115 | 🇺🇸 US | Camshaft retainer plate & mounting bolts includedComplete Set | View on Amazon |
| MELLING Popular | MF127 | 🇺🇸 US | View on Amazon | |
| APEX | AES319 | 🇺🇸 US | Retainer Bolt | View on Amazon |
| APEX | AES318 | 🇺🇸 US | with Mounting Bolts | View on Amazon |
| ELRING | 857150 | 🇺🇸 US | without Bolts/Screws | View on Amazon |
| ELRING | 857320 | 🇺🇸 US | with Bolts/Screws | View on Amazon |
This table covers the Camshaft Retainer / Thrust plates. Typical signs include warpage, cracks, or a plate that no longer locates the assembly. Confirm which plate the notes describe — backing plates, clutch plates and strike plates are different parts.
6 Camshaft Retainer / Thrust Plate parts for the 2003 Avanti Ii come from 4 brands — APEX, ELRING, FEL-PRO and 1 other brand. The "Popular" part is FEL-PRO ES73115.
Listed part numbers: FEL-PRO ES73115, MELLING MF127 and APEX AES319, plus the other parts above.
Connecting Rod Bearing
High Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS Popular | CR807XPN | 🇺🇸 US | SetRace bearings, Trimetal [Pmax Black] | View on Amazon |
| KING ENGINE BEARINGS | CR807HPND | 🇺🇸 US | SetRace bearings, Bimetal (Alecular) | View on Amazon |
| KING ENGINE BEARINGS | CR807HPNDX | 🇺🇸 US | SetRace bearings, Bimetal (Alecular) | View on Amazon |
| KING ENGINE BEARINGS | CR807XPNX | 🇺🇸 US | Race bearings, Trimetal [Pmax Black]Set | View on Amazon |
| KING ENGINE BEARINGS | CR807XPND | 🇺🇸 US | Race bearings, Trimetal [Pmax Black]Set | View on Amazon |
| KING ENGINE BEARINGS | CR807XPNDX | 🇺🇸 US | Race bearings, Trimetal [Pmax Black]Set | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS Popular | CR807SI | 🇺🇸 US | SetBimetal (Aluminum Silicon Base) | View on Amazon |
| KING ENGINE BEARINGS Popular | CR807SIX | 🇺🇸 US | Setbimetal (aluminum silicon base) | View on Amazon |
| KING ENGINE BEARINGS | CR865SI | 🇺🇸 US | SetBimetal (Aluminum Silicon Base) | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS | CR807HPNX | 🇺🇸 US | Race bearings, Bimetal (Alecular)Set | View on Amazon |
| KING ENGINE BEARINGS | CR807HPN | 🇺🇸 US | SetRace bearings, Bimetal (Alecular) | View on Amazon |
This table covers the bearings in the connecting-rod big ends. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly.
KING ENGINE BEARINGS supplies the 11 Connecting Rod Bearing parts for the 2003 Avanti Ii. KING ENGINE BEARINGS CR807XPN carries the "Popular" badge.
In the High Performance grade, KING ENGINE BEARINGS supplies 6 parts: engineered beyond original-equipment specification. A representative part number is KING ENGINE BEARINGS CR807XPN.
The Standard Replacement section lists 3 options from KING ENGINE BEARINGS — built to original-equipment specification. KING ENGINE BEARINGS CR807SI is listed in this group.
2 ungrouped parts are not assigned to a grade, with the same engine-level match.
Connecting Rod Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP | 1346006 | 🇺🇸 US 🇨🇦 CA | Hi-Perf 8740 | View on Amazon |
| ARP | 2346301 | 🇺🇸 US 🇨🇦 CA | Pro Series ARP2000 | View on Amazon |
This table covers the Connecting Rod bolts.
2 Connecting Rod Bolt parts for the 2003 Avanti Ii come from ARP.
This group includes ARP 1346006 and ARP 2346301.
Conversion / Lower Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular | CS9284 | 🇺🇸 US | Lower Oil Pan Gasket Not IncludedPermadry Molded Rubber Oil Pan Gasket(s) Included | View on Amazon |
| ULTRA-POWER Popular | CS9284 | 🇺🇸 US 🇨🇦 CA | SetLower Oil Pan Gasket Not Included | View on Amazon |
| APEX | ACS3071 | 🇺🇸 US | View on Amazon | |
| ELRING | 816400 | 🇺🇸 US | with Crankshaft Seal, Oil Drain Plug | View on Amazon |
| MAHLE / CLEVITE | CS5975 | 🇺🇸 US | Includes Camshaft Retaining Plate | View on Amazon |
| SKP | SKCS9284 | 🇺🇸 US | Permadry Molded Rubber Oil Pan Gasket(s) Included | View on Amazon |
| VICTOR REINZ | 081012601 | 🇺🇸 US | Does Not Include Camshaft Retainer Plate | View on Amazon |
This table covers lower / conversion gasket sets for oil-pan and related joints. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration.
7 Conversion / Lower Gasket Set parts are listed for the 2003 Avanti Ii, from FEL-PRO, ULTRA-POWER, APEX and 4 other brands. FEL-PRO CS9284 carries the "Popular" badge.
Part numbers include FEL-PRO CS9284 and APEX ACS3071, among others listed above.
Crankshaft Main Bearing
High Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS Popular | MB5013XP | 🇺🇸 US | Race bearings, Trimetal [Pmax Black]Set | View on Amazon |
| KING ENGINE BEARINGS | MB5013HP | 🇺🇸 US | SetAlecular (Racing Line) | View on Amazon |
| KING ENGINE BEARINGS | MB5013HPX | 🇺🇸 US | Setwith Extra Oil Clearance | View on Amazon |
| KING ENGINE BEARINGS | MB5013XPX | 🇺🇸 US | Race bearings, Trimetal [Pmax Black]Set | View on Amazon |
| KING ENGINE BEARINGS | MB5777XP | 🇺🇸 US | SetRace bearings, Trimetal [Pmax Black] | View on Amazon |
| KING ENGINE BEARINGS | MB5777XPX | 🇺🇸 US | Race bearings, Trimetal [Pmax Black]Set | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS Popular | MB5293SI | 🇺🇸 US | SetBimetal (Aluminum Silicon Base) | View on Amazon |
| KING ENGINE BEARINGS | MB5766SI | 🇺🇸 US | SetBimetal (Aluminum Silicon Base) | View on Amazon |
| KING ENGINE BEARINGS | MB5398SI | 🇺🇸 US | SetBimetal (Aluminum Silicon Base) | View on Amazon |
This table covers the main bearings that support the crankshaft in the block. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly.
9 Crankshaft Main Bearing parts for the 2003 Avanti Ii come from KING ENGINE BEARINGS. The "Popular" part is KING ENGINE BEARINGS MB5013XP.
The High Performance section: 6 options from KING ENGINE BEARINGS. KING ENGINE BEARINGS MB5013XP is listed in this group.
Standard Replacement: 3 parts, from KING ENGINE BEARINGS. A representative part number is KING ENGINE BEARINGS MB5293SI.
This group includes KING ENGINE BEARINGS MB5013XP, KING ENGINE BEARINGS MB5013HP and KING ENGINE BEARINGS MB5013HPX and the remaining parts above.
Crankshaft Main Bearing Cap Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP | 2345608 | 🇺🇸 US 🇨🇦 CA | STUD | View on Amazon |
This table covers the Crankshaft Main Bearing Cap bolts.
One part is listed for the 2003 Avanti Ii — ARP 2345608.
Crankshaft Main Bearing Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP | SKBS40640 | 🇺🇸 US | Rear | View on Amazon |
This table covers the gaskets that seal the Crankshaft Main Bearing. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
One part is listed for the 2003 Avanti Ii — SKP SKBS40640.
Crankshaft Main Bearing Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VICTOR REINZ | 711348000 | 🇺🇸 US | CrankshaftCrankshaft Machining Required | View on Amazon |
This table covers the wear sleeves used to restore a Crankshaft Main Bearing seal surface.
One part is listed for the 2003 Avanti Ii — VICTOR REINZ 711348000.
Crankshaft Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular | WS99210 | 🇺🇸 US | Front | View on Amazon |
| FEL-PRO | 16229 | 🇺🇸 US | RearWide Lip | View on Amazon |
| FEL-PRO | 16228 | 🇺🇸 US | RearNarrow Lip | View on Amazon |
| NATIONAL | 99210 | 🇺🇸 US | Front | View on Amazon |
| VICTOR REINZ | 711457300 | 🇺🇸 US | RearWide Lip | View on Amazon |
This table covers the sleeves used to restore a grooved crankshaft seal surface.
5 Crankshaft Repair Sleeve parts for the 2003 Avanti Ii come from 4 brands — FEL-PRO, WJB / INMOTION PARTS, NATIONAL and 1 other brand. The "Popular" part is WJB / INMOTION PARTS WS99210.
Listed part numbers: WJB / INMOTION PARTS WS99210, FEL-PRO 16229 and FEL-PRO 16228, plus the other parts above.
Crankshaft Repair Sleeve Tool
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO | 16329 | 🇺🇸 US | Rear | View on Amazon |
This table covers the Crankshaft Repair Sleeve tools. This is a service tool, not a wear part — match the application in the notes.
This group shows a single part: FEL-PRO 16329.
Crankshaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| APEX Popular | ABS371 | 🇺🇸 US | Rear | View on Amazon |
| FEL-PRO Popular | BS40640 | 🇺🇸 US | PTFE RubberIncludes Sleeve | View on Amazon |
| MAHLE / CLEVITE Popular | JV1657 | 🇺🇸 US | Includes Carrier GasketPTFE (Polytetrafluoroethylene) | View on Amazon |
| NATIONAL Popular | 100470 | 🇺🇸 US | Front | View on Amazon |
| ACDELCO | 100085 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| ACDELCO | 100470 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| APEX | ATC3711 | 🇺🇸 US | Seal Only | View on Amazon |
| ELRING | 877130 | 🇺🇸 US | Material: PTFE (polytetrafluoroethylene)/ACM (polyacrylate rubber)Swirl Type: Left-hand Twist | View on Amazon |
| ELRING | 868600 | 🇺🇸 US | Material: PTFE (polytetrafluoroethylene)/ACM (polyacrylate rubber)Swirl Type: Right-hand Twist | View on Amazon |
| ENGINE PRO | 3112639249 | 🇺🇸 US | Kit | View on Amazon |
| NATIONAL | 100085 | 🇺🇸 US | Rear | View on Amazon |
| SCHAEFFLER | SS3130 | 🇺🇸 US | Front2.85" O.D. X 0.32" Width | View on Amazon |
| SCHAEFFLER | SS3405 | 🇺🇸 US | RearViton-Teflon | View on Amazon |
| SKP | SK100470 | 🇺🇸 US | Frontfluoroelastomer | View on Amazon |
| ULTRA-POWER | BS40640 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| VICTOR REINZ | 191008001 | 🇺🇸 US | PTFESet | View on Amazon |
| WJB / INMOTION PARTS | WS100085 | 🇺🇸 US | Inside Diameter: 3.8580000000000001 In | View on Amazon |
| WJB / INMOTION PARTS | WS100470 | 🇺🇸 US | Front | View on Amazon |
This table covers the front and rear seals that keep oil in at the crankshaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
18 Crankshaft Seal parts for the 2003 Avanti Ii come from 12 brands — APEX, NATIONAL, ACDELCO and 9 other brands. The "Popular" part is APEX ABS371.
Crankshaft Seal Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING | 948270 | 🇺🇸 US | Rear | View on Amazon |
| ELRING | 876210 | 🇺🇸 US | Material: Zinc-Copper brazing alloy (ZN-CU) | View on Amazon |
| ELRING | 104560 | 🇺🇸 US | with Crankshaft Seal, Bolts/Screws | View on Amazon |
This table covers the gaskets that seal the Crankshaft Seal. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
ELRING supplies the 3 Crankshaft Seal Gasket parts for the 2003 Avanti Ii.
Part numbers include ELRING 948270, ELRING 876210 and ELRING 104560.
Cylinder Head Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular | ES72173 | 🇺🇸 US | Set | View on Amazon |
| MAHLE / CLEVITE Popular | GS33380 | 🇺🇸 US | Cylinder Head Bolt KitSet | View on Amazon |
| APEX | AHB371 | 🇺🇸 US | Set | View on Amazon |
| ARP | 1343609 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| ARP | 2344317 | 🇺🇸 US 🇨🇦 CA | Stud TypeWith All Same Length Studs | View on Amazon |
| ARP | 2344110 | 🇺🇸 US 🇨🇦 CA | Stud TypeHex Bolt Head | View on Amazon |
| ARP | 2344316 | 🇺🇸 US 🇨🇦 CA | Stud Type4 short, 16 long studs | View on Amazon |
| SKP | SKES72173 | 🇺🇸 US | View on Amazon | |
| VICTOR REINZ | 141007101 | 🇺🇸 US | Set | View on Amazon |
This table covers the bolts that clamp the cylinder head to the block.
9 Cylinder Head Bolt parts are listed for the 2003 Avanti Ii, from ARP, FEL-PRO, MAHLE / CLEVITE and 3 other brands. FEL-PRO ES72173 carries the "Popular" badge.
Listed part numbers: FEL-PRO ES72173, MAHLE / CLEVITE GS33380 and APEX AHB371, plus the other parts above.
Cylinder Head Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MAHLE / CLEVITE Popular | 54442 | 🇺🇸 US | Consolidated MLS DesignMulti-Layered Steel | View on Amazon |
| SKP Popular | SK54442 | 🇺🇸 US | Multi-Layered Steel | View on Amazon |
| APEX | AHG389 | 🇺🇸 US | View on Amazon | |
| ELRING | 261721 | 🇺🇸 US | Diameter [MM]: 100Material: Multi-Layer Steel (MLS) | View on Amazon |
| ELRING | 466520 | 🇺🇸 US | Diameter [MM]: 100,3Material: Multi-Layer Steel (MLS) | View on Amazon |
| ENGINE PRO | 2812589226 | 🇺🇸 US | Also Fits LS6 | View on Amazon |
| FEL-PRO | 26190PT | 🇺🇸 US | Permatorquemls Laserweld Technology | View on Amazon |
| VICTOR REINZ | 611064800 | 🇺🇸 US | Thick: 0.053 In | View on Amazon |
This table covers the head gaskets that seal the block to the cylinder head. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
8 Cylinder Head Gasket parts are listed for the 2003 Avanti Ii, from ELRING, MAHLE / CLEVITE, SKP and 4 other brands. MAHLE / CLEVITE 54442 carries the "Popular" badge.
Part numbers include MAHLE / CLEVITE 54442, SKP SK54442 and APEX AHG389, among others listed above.
Cylinder Head Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular | HS26190PT | 🇺🇸 US | Includes Permadry Molded Rubber Valve Cover Gasket(s), Valve Stem Seals | View on Amazon |
| APEX | AHS3089 | 🇺🇸 US | View on Amazon | |
| FEL-PRO | HS26190APTVK | 🇺🇸 US | Includes Head Bolts, Permadry Molded Rubber Valve Cover Gasket(s), Valve Stem Seals | View on Amazon |
| MAHLE / CLEVITE | HS5975D | 🇺🇸 US | Includes Valve Stem Seals | View on Amazon |
| VICTOR REINZ | 021110001 | 🇺🇸 US | View on Amazon |
This table covers multi-piece gasket sets for a cylinder-head job. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration.
5 Cylinder Head Gasket Set parts are listed for the 2003 Avanti Ii, from FEL-PRO, APEX, MAHLE / CLEVITE and 1 other brand. FEL-PRO HS26190PT carries the "Popular" badge.
This group includes FEL-PRO HS26190PT, APEX AHS3089 and FEL-PRO HS26190APTVK and the remaining parts above.
Cylinder Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | CSL332F | 🇺🇸 US | Semi Finished Inside Diameter | View on Amazon |
This table covers the wear sleeves used to restore a Cylinder seal surface.
One part is listed for the 2003 Avanti Ii — MELLING CSL332F.
Engine Kit Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINE PRO | 311003 | 🇺🇸 US | FEL-Pro CO-Branded Performance Gasket Sets with Permatorque Steel Core Laminate Head Gaskets | View on Amazon |
| ENGINE PRO | 311003MLS | 🇺🇸 US | FEL-Pro CO-Branded Perfomance Gasket Sets with MLS Head Gaskets | View on Amazon |
| ENGINE PRO | 311006 | 🇺🇸 US | Chevrolet LS1, LS6 Engines up To 3.945 Inch Bore | View on Amazon |
This table covers full gasket kits covering the joints opened in an engine rebuild. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration.
ENGINE PRO supplies the 3 Engine Kit Gasket Set parts for the 2003 Avanti Ii.
This group includes ENGINE PRO 311003, ENGINE PRO 311003MLS and ENGINE PRO 311006.
Exhaust Valve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | V1935 | 🇺🇸 US | OE Replacement | View on Amazon |
| MELLING | V1935S | 🇺🇸 US | STELLITE | View on Amazon |
| QUALCAST | 53108157 | 🇺🇸 US | with 1.570 In Head Diameter | View on Amazon |
| QUALCAST | 53108155 | 🇺🇸 US | with 1.550 In Head Diameter | View on Amazon |
This table covers the exhaust valves that let combustion gas out of the cylinder. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one.
4 Exhaust Valve parts for the 2003 Avanti Ii come from 2 brands — MELLING and QUALCAST.
This group includes MELLING V1935, MELLING V1935S and QUALCAST 53108157 and the remaining parts above.
Expansion Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | MPE901BR | 🇺🇸 US | BrassCylinder Head Plug Kit | View on Amazon |
| MELLING | MPE900BR | 🇺🇸 US | BrassOil Galley Plug Not Included | View on Amazon |
| MELLING | MPE900BRGP | 🇺🇸 US | Includes Oil Galley PlugBrass | View on Amazon |
This table covers the Expansion plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes.
MELLING supplies the 3 Expansion Plug parts for the 2003 Avanti Ii.
This group includes MELLING MPE901BR, MELLING MPE900BR and MELLING MPE900BRGP.
Harmonic Balancer Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP | 3302802 | 🇺🇸 US 🇨🇦 CA | M11 flywheel bolt kit | View on Amazon |
| ARP | 2342503 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Harmonic Balancer bolts.
2 Harmonic Balancer Bolt parts for the 2003 Avanti Ii come from ARP.
This group includes ARP 3302802 and ARP 2342503.
Intake Manifold Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP | 1302001 | 🇺🇸 US 🇨🇦 CA | Hex Bolt Head | View on Amazon |
| ARP | 1302101 | 🇺🇸 US 🇨🇦 CA | Black Oxide12 Point Bolt Head | View on Amazon |
| ARP | 4302101 | 🇺🇸 US 🇨🇦 CA | Stainless Steel12 Point Bolt Head | View on Amazon |
This table covers the Intake Manifold bolts.
ARP supplies the 3 Intake Manifold Bolt parts for the 2003 Avanti Ii.
Part numbers include ARP 1302001, ARP 1302101 and ARP 4302101.
Intake Manifold Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| APEX Popular | AMS3713 | 🇺🇸 US | Set | View on Amazon |
| FEL-PRO Popular | MS92438 | 🇺🇸 US | Set | View on Amazon |
| APEX | AMS3720 | 🇺🇸 US | Set | View on Amazon |
| ELRING | 769100 | 🇺🇸 US | View on Amazon | |
| FEL-PRO | MS92465 | 🇺🇸 US | Grommets IncludedValley Gasket | View on Amazon |
| MAHLE / CLEVITE | MS19328 | 🇺🇸 US | SetMolded Rubber | View on Amazon |
| MAHLE / CLEVITE | MS16350 | 🇺🇸 US | SetMolded Rubber | View on Amazon |
| VICTOR REINZ | 111026001 | 🇺🇸 US | Set | View on Amazon |
| VICTOR REINZ | 111029401 | 🇺🇸 US | Set | View on Amazon |
This table covers the gaskets between the intake manifold and the cylinder head. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
9 Intake Manifold Gasket parts are listed for the 2003 Avanti Ii, from APEX, FEL-PRO, MAHLE / CLEVITE and 2 other brands. APEX AMS3713 carries the "Popular" badge.
Listed part numbers: APEX AMS3713, FEL-PRO MS92438 and APEX AMS3720, plus the other parts above.
Intake Valve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | V2000 | 🇺🇸 US | View on Amazon | |
| MELLING | 456230 | 🇺🇸 US | High Performance | View on Amazon |
| QUALCAST | 53108202 | 🇺🇸 US | with 2.020 In Head Diameter | View on Amazon |
| QUALCAST | 53108200 | 🇺🇸 US | with 2.000 In Head Diameter | View on Amazon |
This table covers the intake valves that let air (and fuel, on port-injected engines) into the cylinder. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one.
4 Intake Valve parts for the 2003 Avanti Ii come from 2 brands — MELLING and QUALCAST.
Part numbers include MELLING V2000, MELLING 456230 and QUALCAST 53108202, among others listed above.
Oil
Summary: Notes list SAE 5W-30. Confirm the weight on the filler cap before you buy. Replacement brands in this table include VALVOLINE.
Full Synthetic
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular | VV955 | 🇺🇸 US | Advanced Protection Full Synthetic SAE 5W-301 Quart | View on Amazon |
| VALVOLINE | 881164 | 🇺🇸 US | Advanced Protection Full Synthetic SAE 5W-30Easy Pour 5 Quart | View on Amazon |
| VALVOLINE | 881629 | 🇺🇸 US | Advanced Protection Full Synthetic SAE 5W-305 Gallon Bay Box | View on Amazon |
High Mileage (>75,000 Miles)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular | VV179 | 🇺🇸 US | Full Synthetic High Mileage with Max Life Technology SAE 5W-301 Quart | View on Amazon |
| VALVOLINE | 881169 | 🇺🇸 US | Full Synthetic High Mileage with Max Life Technology SAE 5W-30Easy Pour 5 Quart | View on Amazon |
| VALVOLINE | 881057 | 🇺🇸 US | Max Life Full Synthetic High Mileage SAE 5W-305 Gallon Bay Box | View on Amazon |
This table covers the engine oils listed by grade and specification for this engine. Typical signs include a low-oil lamp, knocking after a long interval, or oil that has gone thin and black well before the next service. Match the viscosity and spec in the notes (and on the filler cap). The tables group grades — they are not interchangeable.
6 Oil parts for the 2003 Avanti Ii come from VALVOLINE. The "Popular" part is VALVOLINE VV955.
The Full Synthetic section lists 3 options from VALVOLINE — full-synthetic oils. VALVOLINE VV955 is listed in this group.
In the High Mileage (>75,000 Miles) grade, VALVOLINE supplies 3 parts: oils grouped for high-mileage engines. A representative part number is VALVOLINE VV179.
Listed part numbers: VALVOLINE VV955, VALVOLINE 881164 and VALVOLINE 881629, plus the other parts above.
Oil Cooler Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular | 72435 | 🇺🇸 US | with Oval Port | View on Amazon |
| FEL-PRO Popular | 72462 | 🇺🇸 US | Center Tubewith Dual Round Port | View on Amazon |
| APEX | AOM6016 | 🇺🇸 US | Oval Port | View on Amazon |
| APEX | AOM6015 | 🇺🇸 US | Dual round port | View on Amazon |
| ELRING | 853210 | 🇺🇸 US | Material: Metaloseal | View on Amazon |
| MAHLE / CLEVITE | B31867 | 🇺🇸 US | Beaded Steel | View on Amazon |
| MAHLE / CLEVITE | B31872 | 🇺🇸 US | Engine Oil Cooler GasketMetal with Molded Rubber | View on Amazon |
| VICTOR REINZ | 711350900 | 🇺🇸 US | Replaces OE Part Number(s) 12593252, 12611384with Oval Ports | View on Amazon |
| VICTOR REINZ | 711351000 | 🇺🇸 US | CenterReplaces OE Part Number(s) 12561710 | View on Amazon |
This table covers the gaskets that seal the Oil Cooler. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
9 Oil Cooler Gasket parts are listed for the 2003 Avanti Ii, from FEL-PRO, APEX, MAHLE / CLEVITE and 2 other brands. FEL-PRO 72435 carries the "Popular" badge.
Listed part numbers: FEL-PRO 72435, FEL-PRO 72462 and APEX AOM6016, plus the other parts above.
Oil Cooler Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER | 72435 | 🇺🇸 US 🇨🇦 CA | Oval Port | View on Amazon |
| ULTRA-POWER | 72462 | 🇺🇸 US 🇨🇦 CA | with Dual Round PortCenter Tube | View on Amazon |
This table covers the seals at the Oil Cooler. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
ULTRA-POWER supplies both parts for the 2003 Avanti Ii.
Part numbers include ULTRA-POWER 72435 and ULTRA-POWER 72462.
Oil Dipstick / Tube Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING | 584210 | 🇺🇸 US | Inner Diameter [MM]: 6,07 | View on Amazon |
This table covers the seals at the Oil Dipstick / Tube. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
One part is listed for the 2003 Avanti Ii — ELRING 584210.
Oil Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING | 823400 | 🇺🇸 US | with Seal RingBolt Head-/Nut Design: Male Hex | View on Amazon |
This table covers the drain plugs in the oil pan.
This group shows a single part: ELRING 823400.
Oil Drain Plug Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING | 056130 | 🇺🇸 US | Material: FPM (fluoride rubber)Outer Diameter [MM]: 20,8 | View on Amazon |
| FEL-PRO | 70820 | 🇺🇸 US | Rubber | View on Amazon |
This table covers the crush washers and gaskets under the oil drain plug. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
2 Oil Drain Plug Gasket parts are listed for the 2003 Avanti Ii, from ELRING and FEL-PRO.
Listed part numbers: ELRING 056130 and FEL-PRO 70820.
Oil Filler Cap Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING | 592250 | 🇺🇸 US | SealMaterial: AEM (Ethylene Acrylate Rubber) | View on Amazon |
| ELRING | 823620 | 🇺🇸 US | SealMaterial: HNBR (hydrogenated nitrile butadiene rubber) | View on Amazon |
| FEL-PRO | 73193 | 🇺🇸 US | Services OEM bonded Cap sealAftermarket Design | View on Amazon |
This table covers the gaskets that seal the Oil Filler Cap. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
3 Oil Filler Cap Gasket parts are listed for the 2003 Avanti Ii, from ELRING and FEL-PRO.
This group includes ELRING 592250, ELRING 823620 and FEL-PRO 73193.
Oil Filter
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VARIOUS MFR | PG4006 | 🇺🇸 US | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VARIOUS MFR | PG4006EX | 🇺🇸 US | Extended Life | View on Amazon |
This table covers the oil filters that screw onto this engine's filter mount. Typical signs include low oil pressure after a service, or a filter that will not spin off because the old gasket stayed on the block. Lube the new gasket and tighten to the spec on the box; a double-gasket install dumps the sump on the first drive.
2 Oil Filter parts for the 2003 Avanti Ii come from VARIOUS MFR.
The Economy section lists 1 option from VARIOUS MFR — the catalog's value-priced group. VARIOUS MFR PG4006 is listed in this group.
Standard Replacement: 1 part, from VARIOUS MFR. A representative part number is VARIOUS MFR PG4006EX.
Part numbers include VARIOUS MFR PG4006 and VARIOUS MFR PG4006EX.
Oil Filter Adapter Gasket / O-Ring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO | 73548 | 🇺🇸 US | Upper | View on Amazon |
| FEL-PRO | 73555 | 🇺🇸 US | Lower | View on Amazon |
This table covers the Oil Filter Adapter Gasket O-rings. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove.
FEL-PRO supplies both parts for the 2003 Avanti Ii.
Listed part numbers: FEL-PRO 73548 and FEL-PRO 73555.
Oil Filter Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| APEX | AOM6015 | 🇺🇸 US | View on Amazon | |
| ULTRA-POWER | 72462 | 🇺🇸 US 🇨🇦 CA | Oil Filter Gasket or SealGasket | View on Amazon |
This table covers the gaskets that seal the Oil Filter. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
2 Oil Filter Gasket parts are listed for the 2003 Avanti Ii, from APEX and ULTRA-POWER.
Part numbers include APEX AOM6015 and ULTRA-POWER 72462.
Oil Galley Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | MOGP100 | 🇺🇸 US | View on Amazon | |
| MELLING | MOGP100HP | 🇺🇸 US | High PerformanceDouble O-Ring Design | View on Amazon |
This table covers the Oil Galley plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes.
2 Oil Galley Plug parts for the 2003 Avanti Ii come from MELLING.
This group includes MELLING MOGP100 and MELLING MOGP100HP.
Oil Pan Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP | 1346901 | 🇺🇸 US 🇨🇦 CA | Hex Bolt Head | View on Amazon |
| ARP | 1346902 | 🇺🇸 US 🇨🇦 CA | 12 Point Bolt Head | View on Amazon |
| ARP | 4346901 | 🇺🇸 US 🇨🇦 CA | Stainless Steel Hex Bolt Head | View on Amazon |
This table covers the Oil Pan bolts.
3 Oil Pan Bolt parts for the 2003 Avanti Ii come from ARP.
This group includes ARP 1346901, ARP 1346902 and ARP 4346901.
Oil Pan Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular | OS30693R | 🇺🇸 US | Permadry Molded Rubber | View on Amazon |
| MAHLE / CLEVITE Popular | OS32241 | 🇺🇸 US | Molded Rubber | View on Amazon |
| ULTRA-POWER Popular | OS30693R | 🇺🇸 US 🇨🇦 CA | Molded Rubber Gasket(s) IncludedMolded Rubber | View on Amazon |
| APEX | AOP371 | 🇺🇸 US | Lower | View on Amazon |
| APEX | AOP389 | 🇺🇸 US | Upper | View on Amazon |
| ELRING | 947800 | 🇺🇸 US | Material: Ethylene Acrylic Elastomer (AEM)Number of Bolt Holes: 15 | View on Amazon |
| ENGINE PRO | 3112612350 | 🇺🇸 US | Also Fits LS6. Does Not Fit LS7 and LS9 | View on Amazon |
| ENGINE PRO | 3130693R | 🇺🇸 US | View on Amazon | |
| FEL-PRO | OS30703R | 🇺🇸 US | Permadry Molded Rubber | View on Amazon |
| MAHLE / CLEVITE | OS32262 | 🇺🇸 US | Molded Rubber | View on Amazon |
| VICTOR REINZ | 101022301 | 🇺🇸 US | Upper | View on Amazon |
This table covers the gaskets between the oil pan and the block. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
11 Oil Pan Gasket parts for the 2003 Avanti Ii come from 7 brands — FEL-PRO, MAHLE / CLEVITE, APEX and 4 other brands. The "Popular" part is FEL-PRO OS30693R.
Oil Pressure Relief Valve Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | M29537 | 🇺🇸 US | Contains 5 Pieces | View on Amazon |
This table covers the Oil Pressure Relief Valve plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes.
This group shows a single part: MELLING M29537.
Oil Pressure Relief Valve Spring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | 29555 | 🇺🇸 US | High Performance | View on Amazon |
This table covers the Oil Pressure Relief Valve springs. Typical signs include a sagging corner, a broken coil, or a clunk from the spring pocket. Replace springs in axle pairs and inspect the seats.
One part is listed for the 2003 Avanti Ii — MELLING 29555.
Oil Pump
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINETECH | EPK152 | 🇺🇸 US | 'Pressure King' Value Line Pump | View on Amazon |
| SKP | SK10295 | 🇺🇸 US | View on Amazon |
High Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING Popular | 10295 | 🇺🇸 US | High PerformanceIncludes Optional Standard and +25 PSI Pressure springs, O-Ring for Oil Pickup Tube | View on Amazon |
| MELLING | 10294 | 🇺🇸 US | High PerformanceIncludes Optional +10 PSI and +25 PSI High Pressure Springs | View on Amazon |
| MELLING | 10296 | 🇺🇸 US | High PerformanceIncludes Optional Standard and +25 PSI Pressure springs, O-Ring for Oil Pickup Tube | View on Amazon |
High Volume / Pressure
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | M295HV | 🇺🇸 US | 18% Additional Volume Over Stock Oil PumpDoes Not Include Oil Pickup Tube Assembly | View on Amazon |
| ULTRA-POWER | UPOP295HV | 🇺🇸 US 🇨🇦 CA | Fits High Volume18% Additional Volume Over Stock Oil Pump | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING Popular | M295 | 🇺🇸 US | Does Not Include Oil Pickup Tube Assembly | View on Amazon |
| SEALED POWER | 22443645 | 🇺🇸 US | Does Not Include Oil Pickup Tube Assembly | View on Amazon |
This table covers the Oil pumps. Typical signs include noise from the pump, no pressure, or fluid that never arrives at the outlet. Prime or fill the pump as the notes require. A dry start is a common way to kill a new unit.
9 Oil Pump parts for the 2003 Avanti Ii come from 5 brands — MELLING, ENGINETECH, SKP and 2 other brands. The "Popular" part is MELLING 10295.
The Economy section: 2 options from ENGINETECH and SKP. ENGINETECH EPK152 is listed in this group.
The High Performance section: 3 options from MELLING. MELLING 10295 is listed in this group.
The High Volume / Pressure section lists 2 options from MELLING and ULTRA-POWER — grouped under the catalog's "High Volume / Pressure" designation — the notes column spells out what sets them apart. MELLING M295HV is listed in this group.
Standard Replacement: 2 parts, from MELLING and SEALED POWER. A representative part number is MELLING M295.
Part numbers include MELLING 10295, ENGINETECH EPK152 and SKP SK10295, among others listed above.
Oil Pump Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING | 157030 | 🇺🇸 US | Suction Pipe | View on Amazon |
| ELRING | 875400 | 🇺🇸 US | Material: FVMQ fluorosilicone rubber | View on Amazon |
This table covers the gaskets that seal the Oil Pump. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
ELRING supplies both parts for the 2003 Avanti Ii.
Part numbers include ELRING 157030 and ELRING 875400.
Oil Pump Pickup Tube / Screen
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | 303S | 🇺🇸 US | View on Amazon |
This table covers the pickup tubes and screens that feed the oil pump.
One part is listed for the 2003 Avanti Ii — MELLING 303S.
Oil Pump Pickup Tube Bracket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | M29500 | 🇺🇸 US | High PerformanceNo Warranty | View on Amazon |
This table covers the brackets that mount the Oil Pump Pickup Tube. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners.
This group shows a single part: MELLING M29500.
Oil Pump Pickup Tube O-Ring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO | 72401 | 🇺🇸 US | View on Amazon | |
| MAHLE / CLEVITE | B32790 | 🇺🇸 US | Oil Pump Pick-up Tube GasketMolded Rubber | View on Amazon |
| VICTOR REINZ | 411041600 | 🇺🇸 US | Inlet Tube | View on Amazon |
This table covers the O-rings that seal the oil-pump pickup tube. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove.
3 Oil Pump Pickup Tube O-Ring parts for the 2003 Avanti Ii come from 3 brands — FEL-PRO, MAHLE / CLEVITE and VICTOR REINZ.
Part numbers include FEL-PRO 72401, MAHLE / CLEVITE B32790 and VICTOR REINZ 411041600.
Oil Pump Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINE PRO | 3112584922 | 🇺🇸 US | View on Amazon |
This table covers the seals at the Oil Pump. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
One part is listed for the 2003 Avanti Ii — ENGINE PRO 3112584922.
Oil Strainer Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | M29517 | 🇺🇸 US | View on Amazon |
This table covers the gaskets that seal the Oil Strainer. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
One part is listed for the 2003 Avanti Ii — MELLING M29517.
Piston
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SILV-O-LITE | 3498HC | 🇺🇸 US | Hyper-CoatedOffset Pin Configuration | View on Amazon |
This table covers the pistons that travel in each cylinder. Typical signs include knock, blow-by, or a cylinder that will not hold compression. Piston work is a short-block job. Match bore, pin and ring pack in the notes — not the photo.
One part is listed for the 2003 Avanti Ii — SILV-O-LITE 3498HC.
Push Rod
High Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | 500704 | 🇺🇸 US | High PerformanceChrome Moly Steel | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | MPR614 | 🇺🇸 US | View on Amazon |
This table covers the pushrods that transfer lifter motion to the rocker arms.
MELLING supplies both parts for the 2003 Avanti Ii.
High Performance: 1 part, from MELLING. A representative part number is MELLING 500704.
The Standard Replacement section: 1 option from MELLING. MELLING MPR614 is listed in this group.
Part numbers include MELLING 500704 and MELLING MPR614.
Push Rod Guide Plate
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | MGP114HP | 🇺🇸 US | High Performance | View on Amazon |
This table covers the Push Rod Guide plates. Typical signs include warpage, cracks, or a plate that no longer locates the assembly. Confirm which plate the notes describe — backing plates, clutch plates and strike plates are different parts.
One part is listed for the 2003 Avanti Ii — MELLING MGP114HP.
Rocker Arm
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | MR1341 | 🇺🇸 US | View on Amazon | |
| MELLING | MRK100HP | 🇺🇸 US | KitHigh Performance | View on Amazon |
| SKP | SKMR1341 | 🇺🇸 US | ExhaustCaptive Bearing Design | View on Amazon |
This table covers the rocker arms that transfer cam motion to the valves.
3 Rocker Arm parts for the 2003 Avanti Ii come from 2 brands — MELLING and SKP.
This group includes MELLING MR1341, MELLING MRK100HP and SKP SKMR1341.
Rocker Arm Stud
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | MRDS100HP | 🇺🇸 US | High PerformanceNo Warranty | View on Amazon |
This table covers the Rocker Arm studs.
This group shows a single part: MELLING MRDS100HP.
Timing Cam Sprocket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | S878 | 🇺🇸 US | 0 or 1 Sensor Hub24x Reluctor | View on Amazon |
| PREFERRED COMPONENTS INC | G55878 | 🇺🇸 US | For Use with Zero Or One Sensor Hub24x Reluctor | View on Amazon |
This table covers the Timing Cam sprockets.
2 Timing Cam Sprocket parts for the 2003 Avanti Ii come from 2 brands — MELLING and PREFERRED COMPONENTS INC.
Listed part numbers: MELLING S878 and PREFERRED COMPONENTS INC G55878.
Timing Chain
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | 3SRH60 | 🇺🇸 US | View on Amazon | |
| PREFERRED COMPONENTS INC | C1360 | 🇺🇸 US | View on Amazon |
This table covers the timing chains that keep the cams in time with the crank.
2 Timing Chain parts are listed for the 2003 Avanti Ii, from MELLING and PREFERRED COMPONENTS INC.
Listed part numbers: MELLING 3SRH60 and PREFERRED COMPONENTS INC C1360.
Timing Chain & Component Kit
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PREFERRED COMPONENTS INC | TS33220 | 🇺🇸 US | 3 Bolt Camshaft SprocketCamshaft Sprocket with One Sensor Hub 24x Reluctor | View on Amazon |
| ULTRA-POWER | 33SRH60SA | 🇺🇸 US 🇨🇦 CA | Timing Chain Damper Not Included | View on Amazon |
High Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | 48561T9 | 🇺🇸 US | High PerformanceNo Warranty | View on Amazon |
| MELLING | 48560T9 | 🇺🇸 US | High PerformanceNo Warranty | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING Popular | 33SRH60SA | 🇺🇸 US | Timing Chain Damper Not Included | View on Amazon |
| MELLING Popular | 33SRH60SC | 🇺🇸 US | Timing Chain Damper Included | View on Amazon |
This table covers kits that group a timing chain with the related tensioners and guides.
6 Timing Chain & Component Kit parts for the 2003 Avanti Ii come from 3 brands — MELLING, PREFERRED COMPONENTS INC and ULTRA-POWER. The "Popular" part is MELLING 33SRH60SA.
The Economy section: 2 options from PREFERRED COMPONENTS INC and ULTRA-POWER. PREFERRED COMPONENTS INC TS33220 is listed in this group.
The High Performance section: 2 options from MELLING. MELLING 48561T9 is listed in this group.
Standard Replacement: 2 parts, from MELLING. A representative part number is MELLING 33SRH60SA.
Part numbers include MELLING 33SRH60SA, PREFERRED COMPONENTS INC TS33220 and MELLING 48561T9, among others listed above.
Timing Chain Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING | B81070 | 🇺🇸 US | View on Amazon |
This table covers the gaskets that seal the Timing Chain Cover. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
One part is listed for the 2003 Avanti Ii — ELRING B81070.
Timing Chain Guide / Damper
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | BD417DBRKT | 🇺🇸 US | KitUse with BD417 Damper, Included | View on Amazon |
This table covers the guides and dampers that keep the timing chain on its path.
One part is listed for the 2003 Avanti Ii — MELLING BD417DBRKT.
Timing Chain Rail Bracket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | BD417BRKT | 🇺🇸 US | Use with BD417 Damper, Not Included | View on Amazon |
This table covers the brackets that mount the Timing Chain Rail. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners.
One part is listed for the 2003 Avanti Ii — MELLING BD417BRKT.
Timing Cover Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP Popular | 1341501 | 🇺🇸 US 🇨🇦 CA | Black OxideTiming Cover | View on Amazon |
| ARP Popular | 1341503 | 🇺🇸 US 🇨🇦 CA | Black OxideRear motor cover | View on Amazon |
| ARP | 1348001 | 🇺🇸 US 🇨🇦 CA | Black OxideValley Cover Bolts | View on Amazon |
| ARP | 4348001 | 🇺🇸 US 🇨🇦 CA | Stainless Steel Hex Bolt Head | View on Amazon |
| ARP | 1341502 | 🇺🇸 US 🇨🇦 CA | Black OxideTiming Cover | View on Amazon |
| ARP | 4341502 | 🇺🇸 US 🇨🇦 CA | Stainless SteelTiming Cover | View on Amazon |
| ARP | 4341504 | 🇺🇸 US 🇨🇦 CA | Black OxideRear motor cover | View on Amazon |
This table covers the Timing Cover bolts.
7 Timing Cover Bolt parts for the 2003 Avanti Ii come from ARP. The "Popular" part is ARP 1341501.
Listed part numbers: ARP 1341501, ARP 1341503 and ARP 1348001, plus the other parts above.
Timing Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular | TCS45993 | 🇺🇸 US | Must be Used with OS 30693R or OS 30703R | View on Amazon |
| MAHLE / CLEVITE Popular | JV5158 | 🇺🇸 US | SetMolded Rubber | View on Amazon |
| SKP Popular | SKTCS45993 | 🇺🇸 US | Gasket Kit | View on Amazon |
| APEX | ATC3710 | 🇺🇸 US | View on Amazon | |
| ELRING | 948280 | 🇺🇸 US | View on Amazon | |
| ELRING | 231390 | 🇺🇸 US | with Crankshaft Seal, Bolts/Screws | View on Amazon |
| ENGINE PRO | 3112633904 | 🇺🇸 US | Also Fits LS6 Engine | View on Amazon |
| ENGINE PRO | 3111062 | 🇺🇸 US | View on Amazon | |
| MAHLE / CLEVITE | JV5022 | 🇺🇸 US | Set | View on Amazon |
| SKP | SK12633904 | 🇺🇸 US | Gasket Only | View on Amazon |
| ULTRA-POWER | TCS45993 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| VICTOR REINZ | 151019801 | 🇺🇸 US | Set | View on Amazon |
This table covers the gaskets that seal the Timing Cover. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
12 Timing Cover Gasket parts for the 2003 Avanti Ii come from 8 brands — MAHLE / CLEVITE, SKP, ELRING and 5 other brands. The "Popular" part is FEL-PRO TCS45993.
Timing Crank Sprocket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | S827 | 🇺🇸 US | View on Amazon | |
| PREFERRED COMPONENTS INC | G55827 | 🇺🇸 US | View on Amazon |
This table covers the crankshaft sprockets that drive the timing chain or belt.
2 Timing Crank Sprocket parts for the 2003 Avanti Ii come from 2 brands — MELLING and PREFERRED COMPONENTS INC.
Listed part numbers: MELLING S827 and PREFERRED COMPONENTS INC G55827.
Valley Pan Cover
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINE PRO | 3112558178 | 🇺🇸 US | Also Fits 5.3L and LS6 Engines | View on Amazon |
This table covers the Valley Pan covers.
One part is listed for the 2003 Avanti Ii — ENGINE PRO 3112558178.
Valve Cover Bolt / Screw
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP | 4007529 | 🇺🇸 US 🇨🇦 CA | Hex Bolt Head | View on Amazon |
| ARP | 1007523 | 🇺🇸 US 🇨🇦 CA | 12 Point Bolt Head | View on Amazon |
| ARP | 1007524 | 🇺🇸 US 🇨🇦 CA | Hex Bolt Head | View on Amazon |
| ARP | 4007530 | 🇺🇸 US 🇨🇦 CA | 12 Point Bolt Head | View on Amazon |
This table covers the Valve Cover Bolt screws. Typical signs include a rounded head, a seeping bleeder, or a fastener that will not hold torque. Do not force a new screw into a stripped hole — repair the thread first.
ARP supplies the 4 Valve Cover Bolt / Screw parts for the 2003 Avanti Ii.
This group includes ARP 4007529, ARP 1007523 and ARP 1007524 and the remaining parts above.
Valve Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular | VS50504R | 🇺🇸 US | Permadry RubberValve Cover Grommets Not Included | View on Amazon |
| FEL-PRO Popular | VS50504R1 | 🇺🇸 US | Permadry Molded RubberIncludes Valve Cover Grommets | View on Amazon |
| MAHLE / CLEVITE Popular | VS50250A | 🇺🇸 US | SetMolded Rubber | View on Amazon |
| APEX | AVC371 | 🇺🇸 US | Does Not Include Grommets | View on Amazon |
| APEX | AVC371S | 🇺🇸 US | Includes Grommets | View on Amazon |
| ELRING | 876270 | 🇺🇸 US | Material: Polyacrylate Rubber (ACM) | View on Amazon |
| ELRING | 838210 | 🇺🇸 US | Material: Multiple | View on Amazon |
| ENGINE PRO | 3112637683 | 🇺🇸 US | Except 1997-1998 with Perimeter Bolts | View on Amazon |
| MAHLE / CLEVITE | VS50250 | 🇺🇸 US | SetMolded Rubber | View on Amazon |
| ULTRA-POWER | MS92465 | 🇺🇸 US 🇨🇦 CA | SetGrommets Included | View on Amazon |
| VICTOR REINZ | 151066301 | 🇺🇸 US | SetValve Cover Grommets Not Included | View on Amazon |
| VICTOR REINZ | 151041601 | 🇺🇸 US | SetIncludes Grommets | View on Amazon |
This table covers the gaskets that seal the valve cover to the cylinder head. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
12 Valve Cover Gasket parts for the 2003 Avanti Ii come from 7 brands — FEL-PRO, MAHLE / CLEVITE, APEX and 4 other brands. The "Popular" part is FEL-PRO VS50504R.
Valve Cover Grommet
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING | 875380 | 🇺🇸 US | Material: MVQ (silicone rubber) | View on Amazon |
| FEL-PRO | ES72233 | 🇺🇸 US | Set | View on Amazon |
| MAHLE / CLEVITE | GS33466 | 🇺🇸 US | KitSet | View on Amazon |
| VICTOR REINZ | 151014201 | 🇺🇸 US | Set | View on Amazon |
This table covers the Valve Cover grommets.
4 Valve Cover Grommet parts for the 2003 Avanti Ii come from 4 brands — ELRING, FEL-PRO, MAHLE / CLEVITE and 1 other brand.
Part numbers include ELRING 875380, FEL-PRO ES72233 and MAHLE / CLEVITE GS33466, among others listed above.
Valve Lifter
High Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | 291009 | 🇺🇸 US | High Performance | View on Amazon |
| MELLING | LS081RF16 | 🇺🇸 US | High PerformanceNo Warranty | View on Amazon |
| MELLING | 293126LS | 🇺🇸 US | High Performance | View on Amazon |
| MELLING | 291012 | 🇺🇸 US | High Performance | View on Amazon |
| MELLING | LS083RF16 | 🇺🇸 US | High Performance | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING Popular | JB2079 | 🇺🇸 US | Hydraulic | View on Amazon |
This table covers the lifters / tappets that transfer cam motion to the valves.
6 Valve Lifter parts for the 2003 Avanti Ii come from MELLING. The "Popular" part is MELLING JB2079.
The High Performance section: 5 options from MELLING. MELLING 291009 is listed in this group.
Standard Replacement: 1 part, from MELLING. A representative part number is MELLING JB2079.
This group includes MELLING JB2079, MELLING 291009 and MELLING LS081RF16 and the remaining parts above.
Valve Spring
High Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING Popular | 466594 | 🇺🇸 US | High PerformanceNo Warranty | View on Amazon |
| MELLING Popular | 466524 | 🇺🇸 US | High PerformanceNo Warranty | View on Amazon |
| MELLING Popular | 461219 | 🇺🇸 US | High PerformanceNo Warranty | View on Amazon |
| MELLING Popular | VSK46659 | 🇺🇸 US | High PerformanceKit Contains: Valve Locks, Spring Retainers, Valve Stem Seals, Stainless Steel Retainers | View on Amazon |
| MELLING | 466564 | 🇺🇸 US | High PerformanceNo Warranty | View on Amazon |
| MELLING | 461218 | 🇺🇸 US | High Performance | View on Amazon |
| MELLING | 466734 | 🇺🇸 US | High PerformanceNo Warranty | View on Amazon |
| MELLING | 466944 | 🇺🇸 US | High PerformanceNo Warranty | View on Amazon |
| MELLING | 225716 | 🇺🇸 US | High PerformanceNo Warranty | View on Amazon |
| MELLING | 461208 | 🇺🇸 US | High PerformanceNo Warranty | View on Amazon |
| MELLING | 4669416 | 🇺🇸 US | High Performance | View on Amazon |
| MELLING | VSK2257 | 🇺🇸 US | High PerformanceKit Contains: Valve Locks, Spring Retainers, Valve Stem Seals | View on Amazon |
| MELLING | VSK46656 | 🇺🇸 US | High PerformanceKit Contains: Valve Locks, Spring Retainers, Valve Stem Seals, Stainless Steel Retainers | View on Amazon |
| MELLING | VSK461208 | 🇺🇸 US | High PerformanceKit Contains: Valve Locks, Spring Retainers, Valve Stem Seals, Stainless Steel Retainers | View on Amazon |
| MELLING | VSK461219 | 🇺🇸 US | High PerformanceKit Contains: Valve Locks, Spring Retainers, Valve Stem Seals | View on Amazon |
| MELLING | VSK46652 | 🇺🇸 US | High PerformanceKit Contains: Valve Locks, Spring Retainers, Valve Stem Seals | View on Amazon |
| MELLING | VSK46694 | 🇺🇸 US | High PerformanceKit Contains: Valve Locks, Spring Retainers, Valve Stem Seals | View on Amazon |
| MELLING | VSK46673 | 🇺🇸 US | High PerformanceKit Contains: Valve Locks, Spring Retainers, Valve Stem Seals, Stainless Steel Retainers | View on Amazon |
| MELLING | VSK2257T | 🇺🇸 US | High PerformanceKit Contains: Valve Locks, Spring Retainers, Valve Stem Seals | View on Amazon |
| MELLING | VSK461208T | 🇺🇸 US | High PerformanceKit Contains: Valve Locks, Spring Retainers, Valve Stem Seals, Titanium Retainers | View on Amazon |
| MELLING | VSK46659T | 🇺🇸 US | High PerformanceKit Contains: Valve Locks, Spring Retainers, Valve Stem Seals, Titanium Retainers | View on Amazon |
| MELLING | VSK461219T | 🇺🇸 US | High PerformanceKit Contains: Valve Locks, Spring Retainers, Valve Stem Seals | View on Amazon |
| MELLING | VSK46656T | 🇺🇸 US | High PerformanceKit Contains: Valve Locks, Spring Retainers, Valve Stem Seals, Titanium Retainers | View on Amazon |
| MELLING | VSK46652T | 🇺🇸 US | High PerformanceKit Contains: Valve Locks, Spring Retainers, Valve Stem Seals | View on Amazon |
| MELLING | VSK46694T | 🇺🇸 US | High PerformanceKit Contains: Valve Locks, Spring Retainers, Valve Stem Seals | View on Amazon |
| MELLING | VSK46697T | 🇺🇸 US | High PerformanceIncludes Valve Locks, Spring Retainers, Valve Stem Seals, Titanium Retainers | View on Amazon |
| MELLING | VSK46673T | 🇺🇸 US | High PerformanceKit Contains: Valve Locks, Spring Retainers, Valve Stem Seals, Titanium Retainers | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING Popular | VS2254 | 🇺🇸 US | Not For Use with MTC-7, MTC-8 Camshafts | View on Amazon |
| MELLING Popular | VS2257 | 🇺🇸 US | For Use with MTC-7, MTC-8 Camshafts | View on Amazon |
| MELLING | VTSS100 | 🇺🇸 US | High Performance | View on Amazon |
| MELLING | 46697 | 🇺🇸 US | High Performance | View on Amazon |
| MELLING | VSK46697 | 🇺🇸 US | High PerformanceIncludes Valve Locks, Spring Retainers, Valve Stem Seals, Stainless Steel Retainers | View on Amazon |
This table covers the springs that close each intake and exhaust valve. Typical signs include a sagging corner, a broken coil, or a clunk from the spring pocket. Replace springs in axle pairs and inspect the seats.
MELLING supplies the 32 Valve Spring parts for the 2003 Avanti Ii. MELLING 466594 carries the "Popular" badge. High Performance and Standard Replacement are all represented, and High Performance alone accounts for 27 parts.
Valve Spring Retainer
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING Popular | VSR709 | 🇺🇸 US | View on Amazon | |
| MELLING Popular | 475264 | 🇺🇸 US | High PerformanceHardened Steel | View on Amazon |
| MELLING | 475274 | 🇺🇸 US | High PerformanceHardened Steel | View on Amazon |
| MELLING | 475234 | 🇺🇸 US | High PerformanceNo Warranty | View on Amazon |
| MELLING | 475284 | 🇺🇸 US | High PerformanceTitanium | View on Amazon |
| MELLING | 475294 | 🇺🇸 US | High PerformanceTitanium | View on Amazon |
This table covers the Valve Spring retainers.
MELLING supplies the 6 Valve Spring Retainer parts for the 2003 Avanti Ii. MELLING VSR709 carries the "Popular" badge.
This group includes MELLING VSR709, MELLING 475264 and MELLING 475274 and the remaining parts above.
Valve Spring Retainer Keeper
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | VL760 | 🇺🇸 US | View on Amazon |
This table covers the keepers that lock each valve-spring retainer to the stem.
One part is listed for the 2003 Avanti Ii — MELLING VL760.
Valve Stem Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular | SS71039 | 🇺🇸 US | Set | View on Amazon |
| MAHLE / CLEVITE Popular | SS45921 | 🇺🇸 US | Metal with Molded RubberSet | View on Amazon |
| APEX | AVS3072 | 🇺🇸 US | Set | View on Amazon |
| ELRING | 876100 | 🇺🇸 US | Material: FPM (fluoride rubber)Outer Diameter [MM]: 30,1 | View on Amazon |
| ELRING | 876110 | 🇺🇸 US | Material: FPM (fluoride rubber)Outer Diameter [MM]: 30,2 | View on Amazon |
| MAHLE / CLEVITE | SS45920 | 🇺🇸 US | SetMetal with Molded Rubber | View on Amazon |
| ULTRA-POWER | SS71039 | 🇺🇸 US 🇨🇦 CA | SetPremium Valve Stem Seals Included | View on Amazon |
This table covers the seals on each valve stem that control oil into the guides. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
7 Valve Stem Seal parts for the 2003 Avanti Ii come from 5 brands — MAHLE / CLEVITE, ELRING, FEL-PRO and 2 other brands. The "Popular" part is FEL-PRO SS71039.
Part numbers include FEL-PRO SS71039, MAHLE / CLEVITE SS45921 and APEX AVS3072, among others listed above.
Buying Engine Parts for a 2003 Avanti Ii
On this vehicle, the engine covers the internals and hard parts that build compression and keep oil where it belongs — gaskets, bearings, camshafts, lifters, seals and timing components.
- Confirm you have the 5.7L V8 engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the seals and gaskets for anything you open up; a timing job should always include the tensioner and guides, not just the belt or chain.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Camshaft and Valve Spring .
Frequently Asked Questions
How many engine parts fit the 2003 Avanti Ii?
Our catalog currently lists 385 engine parts for the 2003 Avanti Ii across 74 subcategories and 22 brands, covering the 5.7L V8 engine. Each part is matched to the engine(s) it fits.
What are the signs of engine problems on a 2003 Avanti Ii?
Common symptoms include oil spots under the vehicle, blue or white exhaust smoke, ticking from the valvetrain, or coolant mysteriously disappearing. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What oil viscosity is listed for the 2003 Avanti Ii?
Oil rows on this page include SAE 5W-30. Confirm the engine and the weight on the filler cap before you buy — high-mileage and standard fills can differ.
What should I replace at the same time?
Where labor overlaps, replace the seals and gaskets for anything you open up; a timing job should always include the tensioner and guides, not just the belt or chain.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2003 Avanti Ii was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2003 Avanti Ii?
Every part on this page is matched to the 5.7L V8 engine. Then engine hard parts are unforgiving of guesswork — confirm the casting or engine code before ordering, because one model year can hide two different blocks. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2003 Avanti Ii
Engine Parts for Other Avanti Ii Years
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