The 2021 Ram 4000 has 101 engine parts with verified fitment on this page — 40 part types and 16 brands, covering both the 5.7L V8 and the 6.4L V8. Each part includes a manufacturer part number and application notes.
On the 2021 Ram 4000, 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 Cylinder Head Gasket (16 parts), Crankshaft Seal (6 parts) and Intake Manifold Gasket (6 parts). The other 37 part types cover the remaining 73 parts.
The 2021 Ram 4000 was sold with both the 5.7L V8 and the 6.4L V8. 22 parts fit every engine; the other 79 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2021 Ram 4000 engine parts are AJUSA (32 parts), ELRING (23 parts) and DORMAN (10 parts), plus 13 more brands. Quality grades include Standard Replacement, Economy and High Performance.
6 parts on this 2021 Ram 4000 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including ELRING 942990 (Crankshaft Seal) and ELRING 903750 (Cylinder Head Gasket). Click any part number to see every vehicle that part fits.
Camshaft Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MAHLE / CLEVITE Fits: all 2021 4000 engines | SH2191S | 🇲🇽 MX | Full Set | 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.
This group shows a single part: MAHLE / CLEVITE SH2191S.
Circular / Semi-Circular Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 6.4L V8 | B16450 | 🇲🇽 MX | View on Amazon |
This table covers the Circular / Semi-Circular 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.
One part is listed for the 2021 Ram 4000 — ELRING B16450.
Connecting Rod Bearing
High Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS Fits: 5.7L V8 | CR8032XPN | 🇲🇽 MX | SetRace bearings, Trimetal [Pmax Black] | View on Amazon |
| KING ENGINE BEARINGS Fits: 5.7L V8 | CR8032XPNX | 🇲🇽 MX | Race bearings, Trimetal [Pmax Black]Set | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS Fits: 5.7L V8 | CR8032SM | 🇲🇽 MX | SetBimetal (Strengthened Aluminum) | View on Amazon |
| KING ENGINE BEARINGS Fits: 5.7L V8 | CR8048SM | 🇲🇽 MX | SetBimetal (Strengthened Aluminum) | 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.
4 Connecting Rod Bearing parts for the 2021 Ram 4000 come from KING ENGINE BEARINGS.
The High Performance section lists 2 options from KING ENGINE BEARINGS — engineered beyond original-equipment specification. KING ENGINE BEARINGS CR8032XPN is listed in this group.
In the Standard Replacement grade, KING ENGINE BEARINGS supplies 2 parts: built to original-equipment specification. A representative part number is KING ENGINE BEARINGS CR8032SM.
Listed part numbers: KING ENGINE BEARINGS CR8032XPN, KING ENGINE BEARINGS CR8032XPNX and KING ENGINE BEARINGS CR8032SM, plus the other parts above.
Conversion / Lower Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: 5.7L V8 | 54321500 | 🇲🇽 MX | View on Amazon | |
| AJUSA Fits: 6.4L V8 | 54321300 | 🇲🇽 MX | View on Amazon | |
| ELRING Fits: 6.4L V8 | B73110 | 🇲🇽 MX | with Crankshaft Seal | View on Amazon |
| MAHLE / CLEVITE Fits: 5.7L V8 | CS54418B | 🇲🇽 MX | 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 2021 Ram 4000 come from 3 brands — AJUSA, ELRING and MAHLE / CLEVITE.
Listed part numbers: AJUSA 54321500, AJUSA 54321300 and ELRING B73110, plus the other parts above.
Crankshaft Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MAHLE / CLEVITE Fits: 5.7L V8 | A351 | 🇲🇽 MX | Steel | View on Amazon |
This table covers the sleeves used to restore a grooved crankshaft seal surface.
One part is listed for the 2021 Ram 4000 — MAHLE / CLEVITE A351.
Crankshaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Popular Fits: 6.4L V8 | 942990 | 🇲🇽 MX | Outer Diameter [mm]: 76,2 | View on Amazon |
| ELRING Popular Fits: 6.4L V8 | 706600 | 🇲🇽 MX | Outer Diameter [mm]: 120,4 | View on Amazon |
| AJUSA Fits: all 2021 4000 engines | 15115300 | 🇲🇽 MX | Front50.8 x 75.5 x 10.3 | View on Amazon |
| AJUSA Fits: all 2021 4000 engines | 71013300 | 🇲🇽 MX | Rear | View on Amazon |
| DORMAN Fits: all 2021 4000 engines | 635333 | 🇲🇽 MX | Rear | View on Amazon |
| ELRING Fits: 6.4L V8 | 488030 | 🇲🇽 MX | Outer Diameter [mm]: 120,4 | 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.
6 Crankshaft Seal parts are listed for the 2021 Ram 4000, from ELRING, AJUSA and DORMAN. ELRING 942990 carries the "Popular" badge. 3 parts fit every engine; the other 3 are engine-specific.
Part numbers include ELRING 942990, ELRING 706600 and AJUSA 15115300, among others listed above.
Crankshaft Seal Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 6.4L V8 | 907600 | 🇲🇽 MX | 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.
This group shows a single part: ELRING 907600.
Cylinder Deactivation Solenoid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2021 4000 engines | 916592XD | 🇲🇽 MX | OE FixIncludes Bolt | View on Amazon |
| DORMAN Fits: all 2021 4000 engines | 916593 | 🇲🇽 MX | OE FIX | View on Amazon |
This table covers the Cylinder Deactivation solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid.
DORMAN supplies both parts for the 2021 Ram 4000. All of them fit every engine offered in the 2021 4000.
Listed part numbers: DORMAN 916592XD and DORMAN 916593.
Cylinder Head Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: all 2021 4000 engines | 81076700 | 🇲🇽 MX | View on Amazon | |
| MAHLE / CLEVITE Fits: 5.7L V8 | GS33429 | 🇲🇽 MX | Cylinder Head Bolt KitSet | View on Amazon |
This table covers the bolts that clamp the cylinder head to the block.
2 Cylinder Head Bolt parts for the 2021 Ram 4000 come from 2 brands — AJUSA and MAHLE / CLEVITE. 1 part fits every engine; the other 1 is engine-specific.
Part numbers include AJUSA 81076700 and MAHLE / CLEVITE GS33429.
Cylinder Head Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Popular Fits: 6.4L V8 | 903750 | 🇲🇽 MX | Diameter [MM]: 104,8 | View on Amazon |
| ELRING Popular Fits: 6.4L V8 | 903760 | 🇲🇽 MX | Diameter [MM]: 104,8 | View on Amazon |
| MAHLE / CLEVITE Popular Fits: 5.7L V8 | 54417A | 🇲🇽 MX | Multi-Layered Steel | View on Amazon |
| MAHLE / CLEVITE Popular Fits: 5.7L V8 | 54418A | 🇲🇽 MX | Multi-Layered Steel | View on Amazon |
| AJUSA Fits: 5.7L V8 | 10260900 | 🇲🇽 MX | Multi Layered Steel | View on Amazon |
| AJUSA Fits: 5.7L V8 | 10261000 | 🇲🇽 MX | Multi Layered Steel | View on Amazon |
| AJUSA Fits: 5.7L V8 | 10261100 | 🇲🇽 MX | Multi Layered Steel | View on Amazon |
| AJUSA Fits: 5.7L V8 | 10261200 | 🇲🇽 MX | Multi Layered Steel | View on Amazon |
| AJUSA Fits: 5.7L V8 | 52602500 | 🇲🇽 MX | Does Not Include Cylinder Head Gasket | View on Amazon |
| AJUSA Fits: 6.4L V8 | 10260700 | 🇲🇽 MX | Multi Layered Steel | View on Amazon |
| AJUSA Fits: 6.4L V8 | 10260800 | 🇲🇽 MX | Multi Layered Steel | View on Amazon |
| AJUSA Fits: 6.4L V8 | 52623100 | 🇲🇽 MX | Right | View on Amazon |
| AJUSA Fits: 6.4L V8 | 52623200 | 🇲🇽 MX | Left | View on Amazon |
| ELRING Fits: 6.4L V8 | 329160 | 🇲🇽 MX | Diameter [MM]: 105,3 | View on Amazon |
| ELRING Fits: 6.4L V8 | 329260 | 🇲🇽 MX | Diameter [MM]: 105,3 | View on Amazon |
| MAHLE / CLEVITE Fits: 5.7L V8 | 54417B | 🇲🇽 MX | Multi-Layered Steel | 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.
16 Cylinder Head Gasket parts for the 2021 Ram 4000 come from 3 brands — AJUSA, ELRING and MAHLE / CLEVITE. The "Popular" part is ELRING 903750.
Cylinder Head Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: 5.7L V8 | 52602400 | 🇲🇽 MX | Complete SetDoes Not Include Cylinder Head Gasket | View on Amazon |
| AJUSA Fits: 6.4L V8 | 52623000 | 🇲🇽 MX | Complete Set | View on Amazon |
| ELRING Fits: 6.4L V8 | B73590 | 🇲🇽 MX | Includes Valve Stem Seals | 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.
3 Cylinder Head Gasket Set parts for the 2021 Ram 4000 come from 2 brands — AJUSA and ELRING.
Listed part numbers: AJUSA 52602400, AJUSA 52623000 and ELRING B73590.
Engine Kit Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: 5.7L V8 | 50548700 | 🇲🇽 MX | Does Not Include Cylinder Head Gasket | View on Amazon |
| AJUSA Fits: 6.4L V8 | 50556600 | 🇲🇽 MX | 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.
2 Engine Kit Gasket Set parts for the 2021 Ram 4000 come from AJUSA.
Listed part numbers: AJUSA 50548700 and AJUSA 50556600.
Intake Manifold Actuator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 5.7L V8 | 911933 | 🇲🇽 MX | OE FIX | View on Amazon |
This table covers the Intake Manifold actuators. Typical signs include a door or range that will not move, or a click with no motion. Confirm the command signal before replacing the actuator — a failed module looks the same.
This group shows a single part: DORMAN 911933.
Intake Manifold Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: 5.7L V8 | 77045300 | 🇲🇽 MX | View on Amazon | |
| AJUSA Fits: 5.7L V8 | 77085300 | 🇲🇽 MX | Set | View on Amazon |
| AJUSA Fits: 6.4L V8 | 13329400 | 🇲🇽 MX | View on Amazon | |
| AJUSA Fits: 6.4L V8 | 77047800 | 🇲🇽 MX | View on Amazon | |
| ELRING Fits: 6.4L V8 | 150870 | 🇲🇽 MX | View on Amazon | |
| MAHLE / CLEVITE Fits: 5.7L V8 | MIS20455 | 🇲🇽 MX | Includes Throttle Body and PCV GasketsSet | 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.
6 Intake Manifold Gasket parts for the 2021 Ram 4000 come from 3 brands — AJUSA, ELRING and MAHLE / CLEVITE.
This group includes AJUSA 77045300, AJUSA 77085300 and AJUSA 13329400 and the remaining parts above.
Intake Plenum Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: 5.7L V8 | 01698200 | 🇲🇽 MX | Material: SiliconeSi | View on Amazon |
| AJUSA Fits: 6.4L V8 | 01698000 | 🇲🇽 MX | View on Amazon | |
| ELRING Fits: 6.4L V8 | 150660 | 🇲🇽 MX | View on Amazon |
This table covers the gaskets that seal the Intake Plenum. 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 Intake Plenum Gasket parts are listed for the 2021 Ram 4000, from AJUSA and ELRING.
This group includes AJUSA 01698200, AJUSA 01698000 and ELRING 150660.
Intake Valve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SBI Fits: 6.4L V8 | P5397 | 🇲🇽 MX | 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.
One part is listed for the 2021 Ram 4000 — SBI P5397.
Oil Cooler
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 6.4L V8 | 918410 | 🇲🇽 MX | View on Amazon |
This table covers the heat exchangers that cool engine oil. Typical signs include oil at the cooler fittings, or coolant that looks like a milkshake. Pressure-test both circuits after a cooler swap — a leak here mixes oil and coolant.
One part is listed for the 2021 Ram 4000 — DORMAN 918410.
Oil Cooler Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: 6.4L V8 | 77046200 | 🇲🇽 MX | View on Amazon | |
| ELRING Fits: 6.4L V8 | B30530 | 🇲🇽 MX | 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.
2 Oil Cooler Gasket parts for the 2021 Ram 4000 come from 2 brands — AJUSA and ELRING.
Part numbers include AJUSA 77046200 and ELRING B30530.
Oil Dipstick / Tube
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 6.4L V8 | 921238 | 🇲🇽 MX | Tube Only | View on Amazon |
This table covers the Oil Dipstick tubes.
One part is listed for the 2021 Ram 4000 — DORMAN 921238.
Oil Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 5.7L V8 | 090172 | 🇲🇽 MX | Pilot Point Molded GasketThread Size | View on Amazon |
| ELRING Fits: 6.4L V8 | 298480 | 🇲🇽 MX | with Seal RingThread Size: M14X1,5x18 | View on Amazon |
| ELRING Fits: 6.4L V8 | 012001 | 🇲🇽 MX | with Seal RingSpanner Size: 13 mm | View on Amazon |
This table covers the drain plugs in the oil pan.
3 Oil Drain Plug parts are listed for the 2021 Ram 4000, from ELRING and DORMAN.
Listed part numbers: DORMAN 090172, ELRING 298480 and ELRING 012001.
Oil Drain Plug Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 6.4L V8 | 176090 | 🇲🇽 MX | Material: ElastomerShape: Asymmetrical | 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.
This group shows a single part: ELRING 176090.
Oil Filler Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Fits: 5.7L V8 | MO154 | 🇲🇽 MX | View on Amazon | |
| MOTORAD Fits: 6.4L V8 | MO158 | 🇲🇽 MX | View on Amazon |
This table covers the caps on the oil filler neck.
MOTORAD supplies both parts for the 2021 Ram 4000.
Part numbers include MOTORAD MO154 and MOTORAD MO158.
Oil Filter
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VARIOUS MFR Fits: all 2021 4000 engines | PG2222 | 🇲🇽 MX | View on Amazon |
High Performance / Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOBIL Fits: all 2021 4000 engines | M1113A | 🇲🇽 MX | Extended Performance | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: all 2021 4000 engines | PF48 | 🇺🇸 US 🇨🇦 CA | GM Original EquipmentFilter Media Material: Enhanced Cellulose | View on Amazon |
| VARIOUS MFR Fits: all 2021 4000 engines | PG2222EX | 🇲🇽 MX | 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.
4 Oil Filter parts are listed for the 2021 Ram 4000, from VARIOUS MFR, MOBIL and ACDELCO. All of them fit every engine offered in the 2021 4000.
In the Economy grade, VARIOUS MFR supplies 1 part: the catalog's value-priced group. A representative part number is VARIOUS MFR PG2222.
In the High Performance / Heavy Duty grade, MOBIL supplies 1 part: grouped under the catalog's "High Performance / Heavy Duty" designation — the notes column spells out what sets them apart. A representative part number is MOBIL M1113A.
The Standard Replacement section: 2 options from ACDELCO and VARIOUS MFR. ACDELCO PF48 is listed in this group.
This group includes VARIOUS MFR PG2222, MOBIL M1113A and ACDELCO PF48 and the remaining parts above.
Oil Pan
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2021 4000 engines | 264260 | 🇲🇽 MX | View on Amazon | |
| SKP Fits: all 2021 4000 engines | SK264260 | 🇲🇽 MX | View on Amazon | |
| SPECTRA PREMIUM Fits: all 2021 4000 engines | CRP34A | 🇲🇽 MX | GASKET AND/OR SEALANT NOT INCLUDED | View on Amazon |
This table covers the oil pans that hold the engine's oil sump.
3 Oil Pan parts for the 2021 Ram 4000 come from 3 brands — DORMAN, SKP and SPECTRA PREMIUM. Every part fits both the 5.7L V8 and the 6.4L V8.
This group includes DORMAN 264260, SKP SK264260 and SPECTRA PREMIUM CRP34A.
Oil Pan Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: 5.7L V8 | 14114000 | 🇲🇽 MX | View on Amazon | |
| AJUSA Fits: 6.4L V8 | 14118900 | 🇲🇽 MX | View on Amazon | |
| ELRING Fits: 6.4L V8 | B16470 | 🇲🇽 MX | with Oil Sump Plate | 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.
3 Oil Pan Gasket parts are listed for the 2021 Ram 4000, from AJUSA and ELRING.
Listed part numbers: AJUSA 14114000, AJUSA 14118900 and ELRING B16470.
Oil Pump Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 6.4L V8 | 278327 | 🇲🇽 MX | Suction Pipe | 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.
This group shows a single part: ELRING 278327.
Push Rod
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SBI Fits: 6.4L V8 | 1901549 | 🇲🇽 MX | Intake6.792 Length | View on Amazon |
| SBI Fits: 6.4L V8 | 1901550 | 🇲🇽 MX | Exhaust8.085 Length | View on Amazon |
This table covers the pushrods that transfer lifter motion to the rocker arms.
2 Push Rod parts for the 2021 Ram 4000 come from SBI.
Listed part numbers: SBI 1901549 and SBI 1901550.
Thrust Washer
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS Fits: 5.7L V8 | TW1003AM | 🇲🇽 MX | Bimetal (Aluminum Base) | View on Amazon |
This table covers the Thrust washers.
One part is listed for the 2021 Ram 4000 — KING ENGINE BEARINGS TW1003AM.
Timing Chain Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 6.4L V8 | 488050 | 🇲🇽 MX | 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.
This group shows a single part: ELRING 488050.
Timing Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 6.4L V8 | B38620 | 🇲🇽 MX | with Crankshaft Seal | 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.
One part is listed for the 2021 Ram 4000 — ELRING B38620.
Timing Crank Sprocket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| INA Fits: all 2021 4000 engines | ZS0122 | 🇲🇽 MX | View on Amazon |
This table covers the crankshaft sprockets that drive the timing chain or belt.
One part is listed for the 2021 Ram 4000 — INA ZS0122.
Valve Cover
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 6.4L V8 | 264495 | 🇲🇽 MX | Right | View on Amazon |
This table covers the Valve covers.
This group shows a single part: DORMAN 264495.
Valve Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: all 2021 4000 engines | 56087800 | 🇲🇽 MX | View on Amazon | |
| AJUSA Fits: 5.7L V8 | 77045400 | 🇲🇽 MX | Upper | View on Amazon |
| ELRING Fits: 6.4L V8 | 927100 | 🇲🇽 MX | Material: Multiple | View on Amazon |
| ELRING Fits: 6.4L V8 | B72090 | 🇲🇽 MX | 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.
4 Valve Cover Gasket parts are listed for the 2021 Ram 4000, from AJUSA and ELRING. 1 part fits every engine; the other 3 are engine-specific.
Listed part numbers: AJUSA 56087800, AJUSA 77045400 and ELRING 927100, plus the other parts above.
Valve Guide
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SBI Fits: 6.4L V8 | 1403156 | 🇲🇽 MX | Intake and Exhaust0.3145 I.D. | View on Amazon |
This table covers the pressed-in bronze and cast-iron guides that align valve stems. Typical signs include oil smoke on startup, a guide that has gone oval, or a valve that no longer seats quietly. Guides are a machine-shop fit. Confirm stem diameter in the notes before ordering.
One part is listed for the 2021 Ram 4000 — SBI 1403156.
Valve Lifter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: 5.7L V8 | 85024400 | 🇲🇽 MX | View on Amazon | |
| SBI Fits: 6.4L V8 | VL555LA | 🇲🇽 MX | Intake and ExhaustNon MDS Lifter Assembly | View on Amazon |
| SBI Fits: 6.4L V8 | VL556LA | 🇲🇽 MX | Intake and ExhaustFront MDS Lifter Assembly | View on Amazon |
| SBI Fits: 6.4L V8 | VL557LA | 🇲🇽 MX | Intake and ExhaustRear MDS Lifter Assembly | View on Amazon |
This table covers the lifters / tappets that transfer cam motion to the valves.
4 Valve Lifter parts are listed for the 2021 Ram 4000, from SBI and AJUSA.
Part numbers include AJUSA 85024400, SBI VL555LA and SBI VL556LA, among others listed above.
Valve Spring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SBI Fits: 6.4L V8 | 1601642SSA | 🇲🇽 MX | Intake and Exhaust2.370 Length | 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.
This group shows a single part: SBI 1601642SSA.
Valve Spring Retainer Keeper
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SBI Fits: 6.4L V8 | 1211083 | 🇲🇽 MX | Intake and Exhaust0.2940 Length | View on Amazon |
This table covers the keepers that lock each valve-spring retainer to the stem.
This group shows a single part: SBI 1211083.
Valve Stem Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA Fits: all 2021 4000 engines | 12047000 | 🇲🇽 MX | Complete Set | View on Amazon |
| AJUSA Fits: all 2021 4000 engines | 57092300 | 🇲🇽 MX | View on Amazon | |
| SBI Fits: 6.4L V8 | 1221425 | 🇲🇽 MX | Intake and ExhaustViton Material | 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.
3 Valve Stem Seal parts are listed for the 2021 Ram 4000, from AJUSA and SBI. 2 parts fit every engine; the other 1 is engine-specific.
Part numbers include AJUSA 12047000, AJUSA 57092300 and SBI 1221425.
Variable Valve Timing (VVT) Solenoid / Actuator
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SPECTRA PREMIUM Fits: all 2021 4000 engines | VTS1128 | 🇲🇽 MX | View on Amazon | |
| WELLS Fits: all 2021 4000 engines | 2T1023 | 🇲🇽 MX | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NTK Fits: all 2021 4000 engines | VV0022 | 🇲🇽 MX | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8 | VVT258 | 🇲🇽 MX | Blue Streak | View on Amazon |
This table covers the oil-control solenoids that command the cam phasers. Typical signs include a door or range that will not move, or a click with no motion. Confirm the command signal before replacing the actuator — a failed module looks the same.
4 Variable Valve Timing (VVT) Solenoid / Actuator parts are listed for the 2021 Ram 4000, from SPECTRA PREMIUM, WELLS, NTK and 1 other brand. 3 parts fit every engine; the other 1 is engine-specific.
Economy: 2 parts, from SPECTRA PREMIUM and WELLS. A representative part number is SPECTRA PREMIUM VTS1128.
The Standard Replacement section: 2 options from NTK and STANDARD MOTOR PRODUCTS. NTK VV0022 is listed in this group.
This group includes SPECTRA PREMIUM VTS1128, WELLS 2T1023 and NTK VV0022 and the remaining parts above.
Variable Valve Timing (VVT) Sprocket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2021 4000 engines | 916595 | 🇲🇽 MX | OE FIX | View on Amazon |
This table covers the cam phaser sprockets used by the variable-valve-timing system.
One part is listed for the 2021 Ram 4000 — DORMAN 916595.
Buying Engine Parts for a 2021 Ram 4000
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.
- Match the engine first. Some engine parts fit every engine; others are engine-specific. Each row shows which engine(s) it fits.
- 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: Cylinder Head Gasket and Crankshaft Seal .
Frequently Asked Questions
How many engine parts fit the 2021 Ram 4000?
Our catalog currently lists 101 engine parts for the 2021 Ram 4000 across 40 subcategories and 16 brands, covering both the 5.7L V8 and the 6.4L V8. Each part is matched to the engine(s) it fits.
Do engine parts differ between 2021 Ram 4000 engines?
Some do. 22 parts fit every engine; the other 79 are engine-specific. Each row (and the filter at the top) shows which. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of engine problems on a 2021 Ram 4000?
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 2021 Ram 4000 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 2021 Ram 4000?
First match the engine — each row shows which engine(s) the part fits. 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 2021 Ram 4000
Engine Parts for Other Ram 4000 Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.