2021 Ram 2500 Drivetrain Parts

This table covers the actuators that engage four-wheel drive at the transfer case or axle. 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. Read more

7 4WD Actuator parts for the 2021 Ram 2500 come from 3 brands — AAM, MOPAR and WELLS. The "Popular" part is MOPAR 68692481AA. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.

Listed part numbers: MOPAR 68692481AA, WELLS 1S16990 and AAM 40116533, plus the other parts above.

This table covers the Axle housings. Read more

MOPAR supplies both parts for the 2021 Ram 2500. All of them fit every engine offered in the 2021 2500.

Listed part numbers: MOPAR 68460128AB and MOPAR 68721238AB.

This table covers the Axle shafts. Read more

8 Axle Shaft parts for the 2021 Ram 2500 come from 2 brands — AAM and MOPAR. The "Popular" part is AAM 40183413K. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.

This group includes AAM 40183413K, MOPAR 68644049AA and AAM 40104193K and the remaining parts above.

This table covers the seals where an axle shaft exits the housing. 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. Read more

6 Axle Shaft Seal parts are listed for the 2021 Ram 2500, from ELRING, SKF, TIMKEN and 2 other brands. SKF 14474 carries the "Popular" badge. 4 parts fit every engine; the other 2 are engine-specific.

Part numbers include SKF 14474, TIMKEN SL260175 and AAM 40173291, among others listed above.

This table covers the CV Intermediate shafts. Read more

2 CV Intermediate Shaft parts for the 2021 Ram 2500 come from 2 brands — DORMAN and MOPAR. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.

This group includes DORMAN 630060 and MOPAR 68644042AA.

This table covers the Differential Bearing Adjuster Nut Lock bolts. Read more

This group shows a single part: AAM 40181318.

This table covers the carriers that hold the differential gears in the axle. Read more

7 Differential Carrier parts are listed for the 2021 Ram 2500, from AAM, USA STANDARD GEAR and MOPAR. USA STANDARD GEAR USA20151 carries the "Popular" badge. All of them fit every engine offered in the 2021 2500.

This group includes USA STANDARD GEAR USA20151, AAM 40089797 and AAM 40047279 and the remaining parts above.

This table covers the Differential covers. Read more

3 Differential Cover parts for the 2021 Ram 2500 come from 2 brands — AAM and USA STANDARD GEAR. 2 parts fit every engine; the other 1 is engine-specific.

Listed part numbers: AAM 40013758, AAM 40087998 and USA STANDARD GEAR USA11903.

This table covers the Differential Cover bolts. Read more

AAM supplies both parts for the 2021 Ram 2500. All of them fit every engine offered in the 2021 2500.

Listed part numbers: AAM 4000216910 and AAM 40002169.

This table covers the gaskets that seal the Differential 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. Read more

4 Differential Cover Gasket parts are listed for the 2021 Ram 2500, from ELRING, AAM and FEL-PRO. 2 parts fit every engine; the other 2 are engine-specific.

Listed part numbers: AAM 40270018, ELRING B15210 and ELRING B15230, plus the other parts above.

This table covers the Differential Crush sleeves. Read more

This group shows a single part: USA STANDARD GEAR USA33099.

This table covers the Differential Fill drain plugs. Read more

One part is listed for the 2021 Ram 2500 — AAM 40007601.

This table covers the bearings and races on the differential pinion. Read more

7 Differential Pinion Bearing / Race parts for the 2021 Ram 2500 come from 2 brands — MOPAR and AAM. The "Popular" part is MOPAR 5086907AA. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.

Listed part numbers: MOPAR 5086907AA, MOPAR 68237716AA and AAM 40265294, plus the other parts above.

This table covers the flanges that connect the driveshaft to the differential pinion. Read more

4 Differential Pinion Flange parts are listed for the 2021 Ram 2500, from MOPAR and USA STANDARD GEAR. 3 parts fit every engine; the other 1 is engine-specific.

Listed part numbers: MOPAR 68450930AC, MOPAR 68533398AA and MOPAR 68450961AC, plus the other parts above.

This table covers the Differential Pinion nuts. Read more

One part is listed for the 2021 Ram 2500 — AAM 40169206.

This table covers the wear sleeves used to restore a grooved pinion seal surface. Read more

AAM supplies both parts for the 2021 Ram 2500. All of them fit every engine offered in the 2021 2500.

This group includes AAM 26060977 and AAM 26060975.

This table covers the seals at the differential pinion yoke. 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. Read more

TIMKEN supplies both parts for the 2021 Ram 2500. All of them fit every engine offered in the 2021 2500.

This group includes TIMKEN SL260601 and TIMKEN SL260603.

This table covers the Differential Pinion shims. Read more

MOPAR supplies the 3 Differential Pinion Shim parts for the 2021 Ram 2500. All of them fit every engine offered in the 2021 2500.

This group includes MOPAR 5086702AA, MOPAR 68237719AA and MOPAR 68454495AA.

This table covers kits that group the bearings, races and seals for a differential rebuild. Read more

3 Differential Rebuild Kit parts for the 2021 Ram 2500 come from 2 brands — USA STANDARD GEAR and AAM. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.

Part numbers include AAM 74067032, USA STANDARD GEAR USA12947 and USA STANDARD GEAR USA12848.

This table covers the ring-and-pinion gear sets that set the axle ratio. Read more

10 Differential Ring and Pinion parts are listed for the 2021 Ram 2500, from AAM and MOPAR. AAM D925444GSK carries the "Popular" badge. 8 parts fit every engine; the other 2 are engine-specific.

This table covers the Differential Ring Gear bolts. Read more

AAM supplies the 3 Differential Ring Gear Bolt parts for the 2021 Ram 2500. All of them fit every engine offered in the 2021 2500.

Listed part numbers: AAM 14012703, AAM 40022812 and AAM 40064367.

This table covers the seals at the Differential. 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. Read more

2 Differential Seal parts for the 2021 Ram 2500 come from 2 brands — AAM and ELRING. 1 part fits every engine; the other 1 is engine-specific.

Part numbers include AAM 26064030 and ELRING B15240.

This table covers the Differential Spider gears. Read more

One part is listed for the 2021 Ram 2500 — USA STANDARD GEAR USA16067.

This table covers the driveshafts that carry torque from the transmission or transfer case. Read more

10 Drive Shaft parts for the 2021 Ram 2500 come from 2 brands — MOPAR and DORMAN. 1 part fits every engine; the other 9 are engine-specific.

This table covers the Drive Shaft bolts. Read more

One part is listed for the 2021 Ram 2500 — DORMAN 13864.

This table covers the Drive Shaft Center Support 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. Read more

5 Drive Shaft Center Support Bearing parts for the 2021 Ram 2500 come from 4 brands — MOPAR, WESTAR, ANCHOR and 1 other brand. The "Popular" part is ANCHOR 6139. 4 parts fit every engine; the other 1 is engine-specific.

The Economy section lists 1 option from WESTAR — the catalog's value-priced group. WESTAR DS6555 is listed in this group.

In the Standard Replacement grade, MOPAR, ANCHOR and PIONEER supply 4 parts: built to original-equipment specification. A representative part number is ANCHOR 6139.

Part numbers include ANCHOR 6139, WESTAR DS6555 and MOPAR 68450997AA, among others listed above.

This table covers the seals at the Drive Shaft. 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. Read more

2 Drive Shaft Seal parts are listed for the 2021 Ram 2500, from AAM and MOPAR. All of them fit every engine offered in the 2021 2500.

Part numbers include AAM 40201742 and MOPAR 5086686AA.

This table covers the gear oils specified for the axle or transfer case. Typical signs include a low-oil lamp, knocking, or oil that has gone thin before the next interval. Match the viscosity and spec in the notes, not just the weight on the bottle. Read more

6 Gear Oil parts are listed for the 2021 Ram 2500, from VALVOLINE, MOBIL and IDEMITSU. MOBIL 102490 carries the "Popular" badge. 5 parts fit every engine; the other 1 is engine-specific.

This group includes MOBIL 102490, VALVOLINE VV982 and IDEMITSU 30305075750 and the remaining parts above.

This table covers the Transfer Case assemblies. Read more

MOPAR supplies both parts for the 2021 Ram 2500. All of them fit every engine offered in the 2021 2500.

Part numbers include MOPAR 68396129AC and MOPAR 68546814AA.

This table covers the levers that shift the transfer case. Read more

This group shows a single part: MOPAR 52105551AC.

This table covers the Transfer Case Control Lever bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles. Read more

2 Transfer Case Control Lever Bushing parts for the 2021 Ram 2500 come from 2 brands — DORMAN and SKP. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.

This group includes DORMAN 14078 and SKP SK14078.

This table covers the Transfer Case control modules. Read more

2 Transfer Case Control Module parts for the 2021 Ram 2500 come from 2 brands — DORMAN and MOPAR. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.

This group includes DORMAN 599099 and MOPAR 68250127AC.

This table covers the fluids specified for the transfer case. Typical signs include discolored fluid, a burnt smell, or a level that keeps dropping. Use only the specification in the notes — the tables group grades because they are not interchangeable. Read more

VALVOLINE supplies the 4 Transfer Case Fluid parts for the 2021 Ram 2500. All of them fit every engine offered in the 2021 2500.

In the Dexron grade, VALVOLINE supplies 3 parts: grouped under the catalog's "Dexron" designation — the notes column spells out what sets them apart. A representative part number is VALVOLINE 798153.

In the Multi-Vehicle grade, VALVOLINE supplies 1 part: grouped under the catalog's "Multi-Vehicle" designation — the notes column spells out what sets them apart. A representative part number is VALVOLINE 855459.

This group includes VALVOLINE 798153, VALVOLINE 773636 and VALVOLINE VV349 and the remaining parts above.

This table covers the Transfer Case High / Low clutches. Typical signs include slip at highway speed, chatter on takeoff, or a pedal that stays low. Resurface or replace the flywheel with the clutch — a heat-checked flywheel wastes the new disc. Read more

One part is listed for the 2021 Ram 2500 — MOPAR 68206417AB.

This table covers the Transfer Case motors. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor. Read more

This group shows a single part: MOPAR 68450803AA.

This table covers the Transfer Case Output Shaft 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. Read more

3 Transfer Case Output Shaft Bearing parts for the 2021 Ram 2500 come from SKF. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.

This group includes SKF 6307J, SKF 6208J and SKF 6309J.

This table covers the seals at the Transfer Case Output Shaft. 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. Read more

3 Transfer Case Output Shaft Seal parts are listed for the 2021 Ram 2500, from SKF and WJB / INMOTION PARTS. All of them fit every engine offered in the 2021 2500.

Part numbers include SKF 18892, SKF 22865A and WJB / INMOTION PARTS WS22865A.

This table covers the seals at the Transfer Case Shift Shaft. 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. Read more

2 Transfer Case Shift Shaft Seal parts for the 2021 Ram 2500 come from ELRING.

Listed part numbers: ELRING B15450 and ELRING B15480.

This table covers the Transfer Case sprockets. Read more

2 Transfer Case Sprocket parts for the 2021 Ram 2500 come from MOPAR. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.

Part numbers include MOPAR 68161362AA and MOPAR 68161363AA.

This table covers the vents on the transfer case. Read more

This group shows a single part: MOPAR 68206423AA.

This table covers the U-joints in the driveshaft. Read more

17 Universal Joint parts are listed for the 2021 Ram 2500, from MOOG, GMB, MOPAR and 3 other brands. DANA 53212X carries the "Popular" badge. 16 parts fit every engine; the other 1 is engine-specific.

Economy: 1 part, from DANA. A representative part number is DANA 253212X.

The Heavy Duty section lists 4 options from MOOG — rated for severe service. MOOG 493 is listed in this group.

The Standard Replacement section: 11 options from GMB, MOPAR, DANA and 3 other brands. DANA 53212X is listed in this group.

1 ungrouped part is not assigned to a grade, with the same engine-level match.