The 1973 Avanti Ii has 138 engine parts with verified fitment on this page — 33 part types and 14 brands, covering the 6.6L 400cid V8 engine. Each part includes a manufacturer part number and application notes.
The engine on the 1973 Avanti Ii covers the internals and hard parts that build compression and keep oil where it belongs — gaskets, bearings, camshafts, lifters, seals and timing components. The largest groups are Valve Cover Gasket (14 parts), Connecting Rod Bearing (11 parts) and Crankshaft Seal (10 parts). The other 30 part types cover the remaining 103 parts.
Every part on this page is matched to the 6.6L 400cid V8 — the only engine offered in the 1973 Avanti Ii.
The most listed brands for 1973 Avanti Ii engine parts are ARP (31 parts), FEL-PRO (26 parts) and VICTOR REINZ (23 parts), plus 11 more brands. Quality grades include Standard Replacement, High Performance and Premium.
17 parts on this 1973 Avanti Ii page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including KING ENGINE BEARINGS CR807XPN (Connecting Rod Bearing) and KING ENGINE BEARINGS MB509SI (Crankshaft Main Bearing). Click any part number to see every vehicle that part fits.
Bolt Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP | 5349701 | 🇺🇸 US 🇨🇦 CA | Black Oxide12 Point Bolt Head | View on Amazon |
| ARP | 5349801 | 🇺🇸 US 🇨🇦 CA | Hex Bolt Head | View on Amazon |
| ARP | 5349601 | 🇺🇸 US 🇨🇦 CA | Stainless Steel Hex Bolt Head | View on Amazon |
| ARP | 5349501 | 🇺🇸 US 🇨🇦 CA | Stainless Steel12 Point Bolt Head | View on Amazon |
This table covers the Bolt kits.
4 Bolt Kit parts for the 1973 Avanti Ii come from ARP.
Listed part numbers: ARP 5349701, ARP 5349801 and ARP 5349601, plus the other parts above.
Camshaft Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP | 1341001 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Camshaft bolts.
One part is listed for the 1973 Avanti Ii — ARP 1341001.
Connecting Rod Bearing
High Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS Popular | CR807XPN | 🇺🇸 US 🇨🇦 CA | SetRace bearings, Trimetal [Pmax Black] | View on Amazon |
| KING ENGINE BEARINGS | CR807HPND | 🇺🇸 US 🇨🇦 CA | SetRace bearings, Bimetal (Alecular) | View on Amazon |
| KING ENGINE BEARINGS | CR807HPNDX | 🇺🇸 US 🇨🇦 CA | SetRace bearings, Bimetal (Alecular) | View on Amazon |
| KING ENGINE BEARINGS | CR807XPNX | 🇺🇸 US 🇨🇦 CA | Race bearings, Trimetal [Pmax Black]Set | View on Amazon |
| KING ENGINE BEARINGS | CR807XPND | 🇺🇸 US 🇨🇦 CA | Race bearings, Trimetal [Pmax Black]Set | View on Amazon |
| KING ENGINE BEARINGS | CR807XPNDX | 🇺🇸 US 🇨🇦 CA | Race bearings, Trimetal [Pmax Black]Set | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS Popular | CR807SI | 🇺🇸 US 🇨🇦 CA | SetBimetal (Aluminum Silicon Base) | View on Amazon |
| KING ENGINE BEARINGS Popular | CR807SIX | 🇺🇸 US 🇨🇦 CA | Setbimetal (aluminum silicon base) | View on Amazon |
| KING ENGINE BEARINGS | CR865SI | 🇺🇸 US 🇨🇦 CA | SetBimetal (Aluminum Silicon Base) | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS | CR807HPNX | 🇺🇸 US 🇨🇦 CA | Race bearings, Bimetal (Alecular)Set | View on Amazon |
| KING ENGINE BEARINGS | CR807HPN | 🇺🇸 US 🇨🇦 CA | 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.
11 Connecting Rod Bearing parts for the 1973 Avanti Ii come from KING ENGINE BEARINGS. The "Popular" part is KING ENGINE BEARINGS CR807XPN.
The High Performance section lists 6 options from KING ENGINE BEARINGS — engineered beyond original-equipment specification. KING ENGINE BEARINGS CR807XPN is listed in this group.
In the Standard Replacement grade, KING ENGINE BEARINGS supplies 3 parts: built to original-equipment specification. A representative part number is KING ENGINE BEARINGS CR807SI.
2 further parts sit outside the graded sections, with the same engine-level match.
Conversion / Lower Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINE PRO | 3777332 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FEL-PRO | CS77332 | 🇺🇸 US 🇨🇦 CA | Multi-PieceRear Main Seal Not Included | View on Amazon |
| MAHLE / CLEVITE | CS1178 | 🇺🇸 US 🇨🇦 CA | Includes 2 Piece Rear Main Seal | View on Amazon |
| VICTOR REINZ | 081005601 | 🇺🇸 US 🇨🇦 CA | with 2 Piece Rear Main Seal | 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.
4 Conversion / Lower Gasket Set parts for the 1973 Avanti Ii come from 4 brands — ENGINE PRO, FEL-PRO, MAHLE / CLEVITE and 1 other brand.
This group includes ENGINE PRO 3777332, FEL-PRO CS77332 and MAHLE / CLEVITE CS1178 and the remaining parts above.
Crankshaft Main Bearing
High Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS | MB509HP | 🇺🇸 US 🇨🇦 CA | alecular (racing line)Set | View on Amazon |
| KING ENGINE BEARINGS | MB509HPX | 🇺🇸 US 🇨🇦 CA | alecular (racing line)Set | View on Amazon |
| KING ENGINE BEARINGS | MB509XP | 🇺🇸 US 🇨🇦 CA | SetRace bearings, Trimetal [Pmax Black] | View on Amazon |
| KING ENGINE BEARINGS | MB509XPC | 🇺🇸 US 🇨🇦 CA | pmaxkote (racing line), polymer coatedSet | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS Popular | MB509SI | 🇺🇸 US 🇨🇦 CA | 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.
KING ENGINE BEARINGS supplies the 5 Crankshaft Main Bearing parts for the 1973 Avanti Ii. KING ENGINE BEARINGS MB509SI carries the "Popular" badge.
High Performance: 4 parts, from KING ENGINE BEARINGS. A representative part number is KING ENGINE BEARINGS MB509HP.
The Standard Replacement section: 1 option from KING ENGINE BEARINGS. KING ENGINE BEARINGS MB509SI is listed in this group.
This group includes KING ENGINE BEARINGS MB509SI, KING ENGINE BEARINGS MB509HP and KING ENGINE BEARINGS MB509HPX and the remaining parts above.
Crankshaft Main Bearing Cap Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP | 1345001 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ARP | 1345401 | 🇺🇸 US 🇨🇦 CA | Stud2-Bolt | View on Amazon |
| ARP | 1345601 | 🇺🇸 US 🇨🇦 CA | Stud4-Bolt | View on Amazon |
This table covers the Crankshaft Main Bearing Cap bolts.
3 Crankshaft Main Bearing Cap Bolt parts for the 1973 Avanti Ii come from ARP.
Listed part numbers: ARP 1345001, ARP 1345401 and ARP 1345601.
Crankshaft Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA | NS99233 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| SCHAEFFLER | SR3519 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WJB / INMOTION PARTS | WS99233 | 🇺🇸 US 🇨🇦 CA | Installation Depth: 1.61 In | View on Amazon |
This table covers the sleeves used to restore a grooved crankshaft seal surface.
3 Crankshaft Repair Sleeve parts are listed for the 1973 Avanti Ii, from BCA, SCHAEFFLER and WJB / INMOTION PARTS.
This group includes BCA NS99233, SCHAEFFLER SR3519 and WJB / INMOTION PARTS WS99233.
Crankshaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular | BS40013 | 🇺🇸 US 🇨🇦 CA | Rubber | View on Amazon |
| FEL-PRO Popular | BS118291 | 🇺🇸 US 🇨🇦 CA | Rubber | View on Amazon |
| BCA | NS3945 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| NATIONAL | 3945 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| NATIONAL | 5072 | 🇺🇸 US 🇨🇦 CA | RearSplit Type | View on Amazon |
| SKF | 199 | 🇨🇦 CA | Rear | View on Amazon |
| TIMKEN | 3945 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| VICTOR REINZ | 191006901 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| VICTOR REINZ | 191011601 | 🇺🇸 US 🇨🇦 CA | SetRubber | View on Amazon |
| WJB / INMOTION PARTS | WS3945 | 🇺🇸 US 🇨🇦 CA | Housing Bore: 3 In | 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.
10 Crankshaft Seal parts are listed for the 1973 Avanti Ii, from FEL-PRO, NATIONAL, VICTOR REINZ and 4 other brands. FEL-PRO BS40013 carries the "Popular" badge.
Cylinder Head Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP Popular | 1343601 | 🇺🇸 US 🇨🇦 CA | SetHex Bolt Head | View on Amazon |
| FEL-PRO Popular | ES72856 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| ARP | 1343701 | 🇺🇸 US 🇨🇦 CA | SetBlack Oxide | View on Amazon |
| ARP | 1343703 | 🇺🇸 US 🇨🇦 CA | SetBlack Oxide Inner Rows, Stainless Steel Outer Row | View on Amazon |
| ARP | 1343603 | 🇺🇸 US 🇨🇦 CA | SetStainless Steel Hex Bolt Head | View on Amazon |
| ARP | 1344001 | 🇺🇸 US 🇨🇦 CA | Stud TypeHex Bolt Head | View on Amazon |
| MAHLE / CLEVITE | GS33285 | 🇺🇸 US 🇨🇦 CA | Cylinder Head Bolt KitSet | View on Amazon |
| VICTOR REINZ | 141004801 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
This table covers the bolts that clamp the cylinder head to the block.
8 Cylinder Head Bolt parts for the 1973 Avanti Ii come from 4 brands — ARP, FEL-PRO, MAHLE / CLEVITE and 1 other brand. The "Popular" part is ARP 1343601.
Listed part numbers: ARP 1343601, FEL-PRO ES72856 and ARP 1343701, plus the other parts above.
Cylinder Head Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO | 8364PT | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MAHLE / CLEVITE | 3432SG | 🇺🇸 US 🇨🇦 CA | Graphite | View on Amazon |
| VICTOR REINZ | 611032900 | 🇺🇸 US 🇨🇦 CA | Composite | 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.
3 Cylinder Head Gasket parts for the 1973 Avanti Ii come from 3 brands — FEL-PRO, MAHLE / CLEVITE and VICTOR REINZ.
Part numbers include FEL-PRO 8364PT, MAHLE / CLEVITE 3432SG and VICTOR REINZ 611032900.
Cylinder Head Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO | HS8364PT3 | 🇺🇸 US 🇨🇦 CA | Includes Valve Stem Seals2-17/32 (In) Inside Diameter Exhaust Pipe Packing Not Included | View on Amazon |
| FEL-PRO | HS8364APT3VK | 🇺🇸 US 🇨🇦 CA | Includes Valve Stem Seals, Head Bolts2-17/32 (In) Inside Diameter Exhaust Pipe Packing Not Included | View on Amazon |
| MAHLE / CLEVITE | HS3432VJ | 🇺🇸 US 🇨🇦 CA | Includes Valve Stem Seals | View on Amazon |
| VICTOR REINZ | 021032101 | 🇺🇸 US 🇨🇦 CA | Except 2-17/32" ID Exhaust Pipe Packing | 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.
4 Cylinder Head Gasket Set parts for the 1973 Avanti Ii come from 3 brands — FEL-PRO, MAHLE / CLEVITE and VICTOR REINZ.
This group includes FEL-PRO HS8364PT3, FEL-PRO HS8364APT3VK and MAHLE / CLEVITE HS3432VJ and the remaining parts above.
Engine Kit Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINE PRO | 311004 | 🇺🇸 US 🇨🇦 CA | FEL-Pro CO-Branded Performance Gasket Sets with Permatorque Steel Core Laminate Head Gaskets | View on Amazon |
| ENGINE PRO | 311004MLS | 🇺🇸 US 🇨🇦 CA | FEL-Pro CO-Branded Perfomance Gasket Sets with MLS Head Gaskets | View on Amazon |
| FEL-PRO | FS8364PT3 | 🇺🇸 US 🇨🇦 CA | Overhaul Set2-17/32 (In) Inside Diameter Exhaust Pipe Packing Not Included | 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.
3 Engine Kit Gasket Set parts for the 1973 Avanti Ii come from 2 brands — ENGINE PRO and FEL-PRO.
Listed part numbers: ENGINE PRO 311004, ENGINE PRO 311004MLS and FEL-PRO FS8364PT3.
Harmonic Balancer
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINE PRO | PB1050ST | 🇺🇸 US 🇨🇦 CA | High Performance Street Series Damper 8.00" OD | View on Amazon |
| ENGINE PRO | PB1050SS | 🇺🇸 US 🇨🇦 CA | SFI Race Series Damper 8.00" Outside Diameter | View on Amazon |
This table covers the crankshaft pulleys / harmonic balancers at the front of the engine.
2 Harmonic Balancer parts for the 1973 Avanti Ii come from ENGINE PRO.
Listed part numbers: ENGINE PRO PB1050ST and ENGINE PRO PB1050SS.
Harmonic Balancer Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP | 4306801 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ARP | 1342501 | 🇺🇸 US 🇨🇦 CA | 5/8 Socket Head | View on Amazon |
| ARP | 2342501 | 🇺🇸 US 🇨🇦 CA | 13/16 Socket Head | View on Amazon |
This table covers the Harmonic Balancer bolts.
ARP supplies the 3 Harmonic Balancer Bolt parts for the 1973 Avanti Ii.
Part numbers include ARP 4306801, ARP 1342501 and ARP 2342501.
Harmonic Balancer Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO | 16202 | 🇺🇸 US 🇨🇦 CA | Use with Installation Tool | View on Amazon |
| MAHLE / CLEVITE | A228 | 🇺🇸 US 🇨🇦 CA | Nickel Plated Formed Steel | View on Amazon |
| VICTOR REINZ | 711347500 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the wear sleeves used to restore a Harmonic Balancer seal surface.
3 Harmonic Balancer Repair Sleeve parts are listed for the 1973 Avanti Ii, from FEL-PRO, MAHLE / CLEVITE and VICTOR REINZ.
This group includes FEL-PRO 16202, MAHLE / CLEVITE A228 and VICTOR REINZ 711347500.
Intake Manifold Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP | 1342001 | 🇺🇸 US 🇨🇦 CA | Hex Bolt Head | View on Amazon |
| ARP | 1342101 | 🇺🇸 US 🇨🇦 CA | Black Oxide12 Point Bolt Head | View on Amazon |
| ARP | 4342001 | 🇺🇸 US 🇨🇦 CA | Stainless Steel Hex Bolt Head | View on Amazon |
| ARP | 4342101 | 🇺🇸 US 🇨🇦 CA | Stainless Steel12 Point Bolt Head | View on Amazon |
This table covers the Intake Manifold bolts.
4 Intake Manifold Bolt parts for the 1973 Avanti Ii come from ARP.
Part numbers include ARP 1342001, ARP 1342101 and ARP 4342001, among others listed above.
Intake Manifold Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular | MS903142 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| MAHLE / CLEVITE | MS15315 | 🇺🇸 US 🇨🇦 CA | CompositeContains One Crossover Restrictor | View on Amazon |
| ULTRA-POWER | MS903142 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| VICTOR REINZ | 111015801 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| VICTOR REINZ | 111062601 | 🇺🇸 US 🇨🇦 CA | 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.
5 Intake Manifold Gasket parts for the 1973 Avanti Ii come from 4 brands — VICTOR REINZ, FEL-PRO, MAHLE / CLEVITE and 1 other brand. The "Popular" part is FEL-PRO MS903142.
Listed part numbers: FEL-PRO MS903142 and MAHLE / CLEVITE MS15315, plus the other parts above.
Oil Drain Plug Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO | 70822 | 🇺🇸 US 🇨🇦 CA | 0.500 (in) Inside Diameter x 0.900 (in) Outside DiameterFlat Washer | View on Amazon |
| MAHLE / CLEVITE | 2051 | 🇺🇸 US 🇨🇦 CA | Composite | View on Amazon |
| VICTOR REINZ | 711346200 | 🇺🇸 US 🇨🇦 CA | 0.500 IN Inside Diameter | 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.
3 Oil Drain Plug Gasket parts for the 1973 Avanti Ii come from 3 brands — FEL-PRO, MAHLE / CLEVITE and VICTOR REINZ.
Listed part numbers: FEL-PRO 70822, MAHLE / CLEVITE 2051 and VICTOR REINZ 711346200.
Oil Pan Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP Popular | 2341802 | 🇺🇸 US 🇨🇦 CA | Black OxideHex Bolt Head | View on Amazon |
| ARP | 4341802 | 🇺🇸 US 🇨🇦 CA | With Standard 2 Piece Cork GasketStainless Steel Hex Bolt Head | View on Amazon |
| ARP | 2341901 | 🇺🇸 US 🇨🇦 CA | Stainless SteelHex Bolt Head | View on Amazon |
| ARP | 2341902 | 🇺🇸 US 🇨🇦 CA | 12 Point Bolt Head | View on Amazon |
| ARP | 4341804 | 🇺🇸 US 🇨🇦 CA | With 1 Piece Rubber GasketStainless Steel Hex Bolt Head | View on Amazon |
This table covers the Oil Pan bolts.
ARP supplies the 5 Oil Pan Bolt parts for the 1973 Avanti Ii. ARP 2341802 carries the "Popular" badge.
Listed part numbers: ARP 2341802, ARP 4341802 and ARP 2341901, plus the other parts above.
Oil Pan Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular | OS5197C2 | 🇺🇸 US 🇨🇦 CA | Cork | View on Amazon |
| FEL-PRO Popular | OS34509T | 🇺🇸 US 🇨🇦 CA | PermadryplusIncludes Snaps | View on Amazon |
| FEL-PRO | OS5197C4 | 🇺🇸 US 🇨🇦 CA | CorkExhaust Pipe Flange Gasket Included | View on Amazon |
| MAHLE / CLEVITE | OS30568X | 🇺🇸 US 🇨🇦 CA | Cork-Rubber | View on Amazon |
| MAHLE / CLEVITE | OS30568XTC | 🇺🇸 US 🇨🇦 CA | Cork with Metal Carrier | View on Amazon |
| MAHLE / CLEVITE | OS32458 | 🇺🇸 US 🇨🇦 CA | Rubber with Plastic Carrier | View on Amazon |
| VICTOR REINZ | 101017001 | 🇺🇸 US 🇨🇦 CA | 18 Bolt PanExcept Exhaust Pipe Packing | View on Amazon |
| VICTOR REINZ | 101010401 | 🇺🇸 US 🇨🇦 CA | with Exhaust Pipe Packing | View on Amazon |
| VICTOR REINZ | 101007901 | 🇺🇸 US 🇨🇦 CA | Improved Design | 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.
9 Oil Pan Gasket parts are listed for the 1973 Avanti Ii, from FEL-PRO, MAHLE / CLEVITE and VICTOR REINZ. FEL-PRO OS5197C2 carries the "Popular" badge.
This group includes FEL-PRO OS5197C2, FEL-PRO OS34509T and FEL-PRO OS5197C4 and the remaining parts above.
Oil Pump Shaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP | 1347901 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Oil Pump shafts.
One part is listed for the 1973 Avanti Ii — ARP 1347901.
Oil Pump Shaft Guide / Retainer
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO | 72665 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MAHLE / CLEVITE | H31354 | 🇺🇸 US 🇨🇦 CA | NylonRetainer Material: Plastic | View on Amazon |
| VICTOR REINZ | 711403800 | 🇺🇸 US 🇨🇦 CA | Distributor to oil pump shaft retainer | View on Amazon |
This table covers the Oil Pump Shaft Guide retainers.
3 Oil Pump Shaft Guide / Retainer parts for the 1973 Avanti Ii come from 3 brands — FEL-PRO, MAHLE / CLEVITE and VICTOR REINZ.
Part numbers include FEL-PRO 72665, MAHLE / CLEVITE H31354 and VICTOR REINZ 711403800.
Piston
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SILV-O-LITE | 1443HC | 🇺🇸 US 🇨🇦 CA | 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.
This group shows a single part: SILV-O-LITE 1443HC.
Piston Ring
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MAHLE / CLEVITE | 40141CP | 🇺🇸 US 🇨🇦 CA | PremiumMaterial Cast Iron / Cast Iron / Stainless Steel | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MAHLE / CLEVITE | 50141CP | 🇺🇸 US 🇨🇦 CA | SetChrome Facing | View on Amazon |
This table covers the rings that seal each piston to the cylinder wall.
2 Piston Ring parts for the 1973 Avanti Ii come from MAHLE / CLEVITE.
In the Premium grade, MAHLE / CLEVITE supplies 1 part: a step above OE specification in materials, tolerances or warranty terms. A representative part number is MAHLE / CLEVITE 40141CP.
Standard Replacement: 1 part, from MAHLE / CLEVITE. A representative part number is MAHLE / CLEVITE 50141CP.
Listed part numbers: MAHLE / CLEVITE 40141CP and MAHLE / CLEVITE 50141CP.
Rocker Arm Stud
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP | 1347103 | 🇺🇸 US 🇨🇦 CA | Installed Height 1.770?Adjuster Thread Length 0.670? | View on Amazon |
| ARP | 1347104 | 🇺🇸 US 🇨🇦 CA | 3/8" With Roller Rocker | View on Amazon |
| ARP | 1347101 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ARP | 2347201 | 🇺🇸 US 🇨🇦 CA | 3/8-7/16" Rocker Arm Stud Kit | View on Amazon |
This table covers the Rocker Arm studs.
ARP supplies the 4 Rocker Arm Stud parts for the 1973 Avanti Ii.
This group includes ARP 1347103, ARP 1347104 and ARP 1347101 and the remaining parts above.
Timing Camshaft Gear Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP | 2341001 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Timing Camshaft Gear bolts.
This group shows a single part: ARP 2341001.
Timing Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO | TCS51241 | 🇺🇸 US 🇨🇦 CA | Repair Sleeve Not Included | View on Amazon |
| FEL-PRO | TCS45165 | 🇺🇸 US 🇨🇦 CA | with Sleeve 'N' Seal | View on Amazon |
| VICTOR REINZ | 151034001 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| VICTOR REINZ | 151026301 | 🇺🇸 US 🇨🇦 CA | SetDoes Not Include RTV | 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.
4 Timing Cover Gasket parts are listed for the 1973 Avanti Ii, from FEL-PRO and VICTOR REINZ.
Part numbers include FEL-PRO TCS51241, FEL-PRO TCS45165 and VICTOR REINZ 151034001, among others listed above.
Timing Cover Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SCHAEFFLER | SR3498 | 🇺🇸 US 🇨🇦 CA | 17.48 mm Width61.3 mm Outside Diameter | View on Amazon |
| SKF | 480177 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKF | 99176 | 🇨🇦 CA | Shaft Diameter: 1.766 In | View on Amazon |
This table covers the wear sleeves used to restore a Timing Cover seal surface.
3 Timing Cover Repair Sleeve parts are listed for the 1973 Avanti Ii, from SKF and SCHAEFFLER.
This group includes SCHAEFFLER SR3498, SKF 480177 and SKF 99176.
Timing Cover Repair Sleeve Tool
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO | 16312 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Timing Cover Repair Sleeve tools. This is a service tool, not a wear part — match the application in the notes.
One part is listed for the 1973 Avanti Ii — FEL-PRO 16312.
Timing Cover Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SCHAEFFLER | SS2784 | 🇺🇸 US 🇨🇦 CA | Front9.53 mm Width | View on Amazon |
| SKF | 17286 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the seals at the Timing Cover. 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.
2 Timing Cover Seal parts are listed for the 1973 Avanti Ii, from SCHAEFFLER and SKF.
Listed part numbers: SCHAEFFLER SS2784 and SKF 17286.
Valve Cover Gasket
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular | VS12869T | 🇺🇸 US 🇨🇦 CA | Permadryplus | View on Amazon |
| MAHLE / CLEVITE | VS50732 | 🇺🇸 US 🇨🇦 CA | SetIncludes Washers | View on Amazon |
| VICTOR REINZ | 151057501 | 🇺🇸 US 🇨🇦 CA | SetImproved Design | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular | VS12869 | 🇺🇸 US 🇨🇦 CA | Cork | View on Amazon |
| FEL-PRO Popular | VS12869R | 🇺🇸 US 🇨🇦 CA | Rubber | View on Amazon |
| FEL-PRO | VS12869AC | 🇺🇸 US 🇨🇦 CA | Cork | View on Amazon |
| FEL-PRO | VS50265C | 🇺🇸 US 🇨🇦 CA | High Temperature DesignCork | View on Amazon |
| MAHLE / CLEVITE | VS38110 | 🇺🇸 US 🇨🇦 CA | Cork-RubberMounting Hole Quantity: 12 | View on Amazon |
| MAHLE / CLEVITE | VS38110R | 🇺🇸 US 🇨🇦 CA | SetMolded Rubber | View on Amazon |
| MAHLE / CLEVITE | VS38110TC | 🇺🇸 US 🇨🇦 CA | Cork with Metal CarrierMounting Hole Quantity: 8 | View on Amazon |
| ULTRA-POWER | VS12869 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| VICTOR REINZ | 151058701 | 🇺🇸 US 🇨🇦 CA | SetCork | View on Amazon |
| VICTOR REINZ | 151050201 | 🇺🇸 US 🇨🇦 CA | SetHigh Temperature Design | View on Amazon |
| VICTOR REINZ | 151050101 | 🇺🇸 US 🇨🇦 CA | SetCork | 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.
14 Valve Cover Gasket parts are listed for the 1973 Avanti Ii, from FEL-PRO, MAHLE / CLEVITE, VICTOR REINZ and 1 other brand. FEL-PRO VS12869T carries the "Popular" badge.
The Premium section: 3 options from FEL-PRO, MAHLE / CLEVITE and VICTOR REINZ. FEL-PRO VS12869T is listed in this group.
The Standard Replacement section: 11 options from FEL-PRO, MAHLE / CLEVITE, VICTOR REINZ and 1 other brand. FEL-PRO VS12869 is listed in this group.
Valve Cover Load Spreader
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO | ES72676 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MAHLE / CLEVITE | GS33825 | 🇺🇸 US 🇨🇦 CA | Engine Valve Cover Load Spreader SetSteel | View on Amazon |
| VICTOR REINZ | 181003401 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Valve Cover Load spreaders.
3 Valve Cover Load Spreader parts for the 1973 Avanti Ii come from 3 brands — FEL-PRO, MAHLE / CLEVITE and VICTOR REINZ.
This group includes FEL-PRO ES72676, MAHLE / CLEVITE GS33825 and VICTOR REINZ 181003401.
Valve Stem Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular | SS5112 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| FEL-PRO Popular | SS10058 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| MAHLE / CLEVITE | SS45229 | 🇺🇸 US 🇨🇦 CA | SetMolded Rubber | View on Amazon |
| MAHLE / CLEVITE | SS45264 | 🇺🇸 US 🇨🇦 CA | SetMolded Rubber | View on Amazon |
| VICTOR REINZ | 121001801 | 🇺🇸 US 🇨🇦 CA | SetContains 8 Pieces | View on Amazon |
| VICTOR REINZ | 121004001 | 🇺🇸 US 🇨🇦 CA | SetContains 16 Pieces | 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.
6 Valve Stem Seal parts are listed for the 1973 Avanti Ii, from FEL-PRO, MAHLE / CLEVITE and VICTOR REINZ. FEL-PRO SS5112 carries the "Popular" badge.
Part numbers include FEL-PRO SS5112, FEL-PRO SS10058 and MAHLE / CLEVITE SS45229, among others listed above.
Buying Engine Parts for a 1973 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 6.6L 400cid 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: Valve Cover Gasket and Connecting Rod Bearing .
Frequently Asked Questions
How many engine parts fit the 1973 Avanti Ii?
Our catalog currently lists 138 engine parts for the 1973 Avanti Ii across 33 subcategories and 14 brands, covering the 6.6L 400cid V8 engine. Each part is matched to the engine(s) it fits.
What are the signs of engine problems on a 1973 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 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 1973 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 1973 Avanti Ii?
Every part on this page is matched to the 6.6L 400cid 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 1973 Avanti Ii
Engine Parts for Other Avanti Ii Years
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