162 Drivetrain parts are listed for the 2018 Ram 4500, in 29 part types, covering both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2018 Ram 4500, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. Most of the listed parts are Universal Joint (50 parts), Drive Shaft (15 parts) and Differential Pinion Bearing / Race (13 parts). The other 26 part types cover the remaining 84 parts.
The 2018 Ram 4500 was sold with both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. 59 parts fit every engine; the other 103 are engine-specific. Each part shows which engine(s) it fits.
18 brands supply drivetrain parts for the 2018 Ram 4500, led by WJB / INMOTION PARTS (33 parts), MOPAR (27 parts) and DORMAN (16 parts), plus 15 more brands. Quality grades include Standard Replacement, Economy and Heavy Duty.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2018 Ram 4500. 21 parts have it, including NATIONAL 711046 (Axle Shaft Seal) and WJB / INMOTION PARTS WT3920 (Differential Carrier Bearing / Race). Each part number opens a page with every vehicle that part fits.
Axle / Differential Assembly
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: all 2018 4500 engines | 68213868AA | 🇺🇸 US 🇨🇦 CA | Fits Front4.10 Rear Axle Ratio, Conventional Differential Front Axle | View on Amazon |
| MOPAR Fits: all 2018 4500 engines | 68213871AA | 🇺🇸 US 🇨🇦 CA | Fits Front4.44 Rear Axle Ratio, Conventional Differential Front Axle | View on Amazon |
| MOPAR Fits: all 2018 4500 engines | 68213871AC | 🇺🇸 US 🇨🇦 CA | Fits Front4.44 Rear Axle Ratio, Conventional Differential Front Axle | View on Amazon |
| MOPAR Fits: all 2018 4500 engines | 68213872AA | 🇺🇸 US 🇨🇦 CA | Fits Front4.88 Rear Axle Ratio, Conventional Differential Front Axle | View on Amazon |
| MOPAR Fits: all 2018 4500 engines | 68213872AC | 🇺🇸 US 🇨🇦 CA | Fits Front4.88 Rear Axle Ratio, Conventional Differential Front Axle | View on Amazon |
This table covers the Axle / Differential assemblies.
5 Axle / Differential Assembly parts for the 2018 Ram 4500 come from MOPAR. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
Listed part numbers: MOPAR 68213868AA, MOPAR 68213871AA and MOPAR 68213871AC, plus the other parts above.
Axle Housing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: all 2018 4500 engines | 68213858AA | 🇺🇸 US 🇨🇦 CA | Fits Front10.827 Front Axle | View on Amazon |
This table covers the Axle housings.
One part is listed for the 2018 Ram 4500 — MOPAR 68213858AA.
Axle Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Popular Fits: all 2018 4500 engines | 711046 | 🇺🇸 US 🇨🇦 CA | Front4 X 4 | View on Amazon |
| SKF Fits: all 2018 4500 engines | 19756A | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| TIMKEN Fits: all 2018 4500 engines | SL260190 | 🇺🇸 US 🇨🇦 CA | Front4WD | View on Amazon |
| WJB / INMOTION PARTS Fits: all 2018 4500 engines | WS711046 | 🇺🇸 US 🇨🇦 CA | Front4 X 4 | View on Amazon |
| WJB / INMOTION PARTS Fits: all 2018 4500 engines | WS19756A | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
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.
5 Axle Shaft Seal parts are listed for the 2018 Ram 4500, from WJB / INMOTION PARTS, NATIONAL, SKF and 1 other brand. NATIONAL 711046 carries the "Popular" badge. All of them fit every engine offered in the 2018 4500.
This group includes NATIONAL 711046, SKF 19756A and TIMKEN SL260190 and the remaining parts above.
Differential Carrier Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular Fits: all 2018 4500 engines | WT3920 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| WJB / INMOTION PARTS Popular Fits: all 2018 4500 engines | WT3984 | 🇺🇸 US 🇨🇦 CA | Rearwith 11.825 IN Ring Gear | View on Amazon |
| FAMOUS BRAND Fits: all 2018 4500 engines | 1410424845 | 🇺🇸 US 🇨🇦 CA | Front RightMagnasteyr 275MM | View on Amazon |
| WJB / INMOTION PARTS Fits: all 2018 4500 engines | WT32012X | 🇺🇸 US 🇨🇦 CA | Bearing & Race Set | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Fits: all 2018 4500 engines | NB32012X | 🇺🇸 US 🇨🇦 CA | Bearing & Race SetIncludes Cup and Cone | View on Amazon |
| NATIONAL Fits: all 2018 4500 engines | 32012X | 🇺🇸 US 🇨🇦 CA | Bearing & Race Set | View on Amazon |
| SCHAEFFLER Fits: all 2018 4500 engines | M802011 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
This table covers the bearings and races that support the differential carrier.
7 Differential Carrier Bearing / Race parts are listed for the 2018 Ram 4500, from WJB / INMOTION PARTS, FAMOUS BRAND, BCA and 2 other brands. WJB / INMOTION PARTS WT3920 carries the "Popular" badge. All of them fit every engine offered in the 2018 4500.
In the Economy grade, WJB / INMOTION PARTS and FAMOUS BRAND supply 4 parts: the catalog's value-priced group. A representative part number is WJB / INMOTION PARTS WT3920.
The Standard Replacement section lists 3 options from BCA, NATIONAL and SCHAEFFLER — built to original-equipment specification. BCA NB32012X is listed in this group.
This group includes WJB / INMOTION PARTS WT3920, WJB / INMOTION PARTS WT3984 and FAMOUS BRAND 1410424845 and the remaining parts above.
Differential Pinion Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: all 2018 4500 engines | WT72487 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| WJB / INMOTION PARTS Fits: all 2018 4500 engines | WT55437 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| WJB / INMOTION PARTS Fits: all 2018 4500 engines | WT72212C | 🇺🇸 US 🇨🇦 CA | Rear Innerwith 11.825 IN Ring Gear | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Popular Fits: all 2018 4500 engines | NB55437 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| BCA Popular Fits: all 2018 4500 engines | NB72212C | 🇺🇸 US 🇨🇦 CA | Rear Innerwith Spicer S111 Axle(S) | View on Amazon |
| TIMKEN Popular Fits: all 2018 4500 engines | 72212C | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| NATIONAL Fits: all 2018 4500 engines | 72487 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| SCHAEFFLER Fits: all 2018 4500 engines | KM802048 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| SCHAEFFLER Fits: all 2018 4500 engines | K55200C | 🇺🇸 US 🇨🇦 CA | Rear Outer26.909 mm Width | View on Amazon |
| SCHAEFFLER Fits: all 2018 4500 engines | KNP516549 | 🇺🇸 US 🇨🇦 CA | Rear26.909 mm Width | View on Amazon |
| SCHAEFFLER Fits: all 2018 4500 engines | NP673386 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| SKF Fits: all 2018 4500 engines | BR55437 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| SKF Fits: all 2018 4500 engines | BR72487 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
This table covers the bearings and races on the differential pinion.
13 Differential Pinion Bearing / Race parts for the 2018 Ram 4500 come from 6 brands — SCHAEFFLER, WJB / INMOTION PARTS, BCA and 3 other brands. The "Popular" part is BCA NB55437. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
The Economy section: 3 options from WJB / INMOTION PARTS. WJB / INMOTION PARTS WT72487 is listed in this group.
Standard Replacement: 10 parts, from SCHAEFFLER, BCA, SKF and 2 other brands. A representative part number is BCA NB55437.
Differential Pinion Flange
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: all 2018 4500 engines | 68036719AA | 🇺🇸 US 🇨🇦 CA | Fits Heavy Duty HEMI MDS Engine6 Speed Auto Aisin AS66RC HD Trans, Heavy Duty HEMI MDS Engine | View on Amazon |
| MOPAR Fits: all 2018 4500 engines | 68036792AA | 🇺🇸 US 🇨🇦 CA | Fits Regular Cab Chassis Wheelbase 3or Regular Cab Chassis Wheelbase 4or Crew Cab197.4" Wheelbase | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 68036718AB | 🇺🇸 US 🇨🇦 CA | Fits 6 Speed Auto Aisin AS69RC HD Trans, Cummins engine Turbo DIESEL EngineCrew Cab | View on Amazon |
This table covers the flanges that connect the driveshaft to the differential pinion.
MOPAR supplies the 3 Differential Pinion Flange parts for the 2018 Ram 4500. 2 parts fit every engine; the other 1 is engine-specific.
Listed part numbers: MOPAR 68036719AA, MOPAR 68036792AA and MOPAR 68036718AB.
Differential Pinion Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Fits: all 2018 4500 engines | NS99254 | 🇺🇸 US 🇨🇦 CA | Front Outerwith Magnasteyr Axle | View on Amazon |
| WJB / INMOTION PARTS Fits: all 2018 4500 engines | WS99254 | 🇺🇸 US 🇨🇦 CA | Front Outer4 X 4 | View on Amazon |
This table covers the wear sleeves used to restore a grooved pinion seal surface.
2 Differential Pinion Repair Sleeve parts are listed for the 2018 Ram 4500, from BCA and WJB / INMOTION PARTS. All of them fit every engine offered in the 2018 4500.
This group includes BCA NS99254 and WJB / INMOTION PARTS WS99254.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Popular Fits: all 2018 4500 engines | 127591 | 🇺🇸 US 🇨🇦 CA | Rear Outerwith 11.825 IN Ring Gear | View on Amazon |
| NATIONAL Popular Fits: all 2018 4500 engines | 711047 | 🇺🇸 US 🇨🇦 CA | Front Outer4 X 4 | View on Amazon |
| SCHAEFFLER Fits: all 2018 4500 engines | SS3322 | 🇺🇸 US 🇨🇦 CA | Rear4.57" O.D. X 1" Width | View on Amazon |
| SKF Fits: all 2018 4500 engines | 25550A | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| SKF Fits: all 2018 4500 engines | 29528 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| TIMKEN Fits: all 2018 4500 engines | 471498 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| TIMKEN Fits: all 2018 4500 engines | SL260210 | 🇺🇸 US 🇨🇦 CA | Front4WD | View on Amazon |
| WJB / INMOTION PARTS Fits: all 2018 4500 engines | WS711047 | 🇺🇸 US 🇨🇦 CA | Front Outer4 X 4 | View on Amazon |
| WJB / INMOTION PARTS Fits: all 2018 4500 engines | WS127591 | 🇺🇸 US 🇨🇦 CA | Rear Outerwith 11.825 IN Ring Gear | View on Amazon |
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.
9 Differential Pinion Seal parts are listed for the 2018 Ram 4500, from NATIONAL, SKF, TIMKEN and 2 other brands. NATIONAL 127591 carries the "Popular" badge. All of them fit every engine offered in the 2018 4500.
Part numbers include NATIONAL 127591, NATIONAL 711047 and SCHAEFFLER SS3322, among others listed above.
Differential Rebuild Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTIVE GEAR Fits: all 2018 4500 engines | RA110R | 🇺🇸 US 🇨🇦 CA | Bearing Kit Includes Koyo Tapered Bearings | View on Amazon |
| SKF Fits: all 2018 4500 engines | SDK434 | 🇺🇸 US 🇨🇦 CA | Standard Kit | View on Amazon |
| USA STANDARD GEAR Fits: all 2018 4500 engines | USA11452 | 🇺🇸 US | Standard Kit | View on Amazon |
This table covers kits that group the bearings, races and seals for a differential rebuild.
3 Differential Rebuild Kit parts for the 2018 Ram 4500 come from 3 brands — MOTIVE GEAR, SKF and USA STANDARD GEAR. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
Part numbers include MOTIVE GEAR RA110R, SKF SDK434 and USA STANDARD GEAR USA11452.
Differential Ring and Pinion
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: all 2018 4500 engines | 68034375AA | 🇺🇸 US 🇨🇦 CA | Fits 4.10 Rear Axle Ratio10.827 Front Axle | View on Amazon |
| MOPAR Fits: all 2018 4500 engines | 68034376AA | 🇺🇸 US 🇨🇦 CA | Fits 4.44 Rear Axle Ratio10.827 Front Axle | View on Amazon |
| MOPAR Fits: all 2018 4500 engines | 68034377AA | 🇺🇸 US 🇨🇦 CA | Fits 4.88 Rear Axle Ratio10.827 Front Axle | View on Amazon |
| MOPAR Fits: all 2018 4500 engines | 68036565AA | 🇺🇸 US 🇨🇦 CA | Includes pinion Nut | View on Amazon |
| MOPAR Fits: all 2018 4500 engines | 68036572AA | 🇺🇸 US 🇨🇦 CA | Includes pinion Nut | View on Amazon |
This table covers the ring-and-pinion gear sets that set the axle ratio.
MOPAR supplies the 5 Differential Ring and Pinion parts for the 2018 Ram 4500. All of them fit every engine offered in the 2018 4500.
Part numbers include MOPAR 68034375AA, MOPAR 68034376AA and MOPAR 68034377AA, among others listed above.
Drive Shaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular Fits: 6.4L V8 | 938168 | 🇺🇸 US 🇨🇦 CA | Length: 39.861" | View on Amazon |
| DORMAN Popular Fits: all 2018 4500 engines | 938230 | 🇺🇸 US 🇨🇦 CA | Length: 37.54" | View on Amazon |
| DORMAN Popular Fits: 6.7L L6 DIESEL Turbocharged | 938169 | 🇺🇸 US 🇨🇦 CA | Length: 40.25" | View on Amazon |
| DORMAN Fits: 6.4L V8 | 946500 | 🇺🇸 US 🇨🇦 CA | Length: 86.36" | View on Amazon |
| DORMAN Fits: 6.4L V8 | 946501 | 🇺🇸 US 🇨🇦 CA | Length: 84.63" | View on Amazon |
| DORMAN Fits: 6.4L V8 | 946502 | 🇺🇸 US 🇨🇦 CA | Length: 108.57" | View on Amazon |
| DORMAN Fits: 6.4L V8 | 946503 | 🇺🇸 US 🇨🇦 CA | Length: 113.49" | View on Amazon |
| DORMAN Fits: 6.4L V8 | 946504 | 🇺🇸 US 🇨🇦 CA | Length: 115.34" | View on Amazon |
| DORMAN Fits: 6.7L L6 DIESEL Turbocharged | 936614 | 🇺🇸 US 🇨🇦 CA | Length: 138" | View on Amazon |
| DORMAN Fits: 6.7L L6 DIESEL Turbocharged | 946507 | 🇺🇸 US 🇨🇦 CA | Length: 84.25" | View on Amazon |
| DORMAN Fits: 6.7L L6 DIESEL Turbocharged | 946508 | 🇺🇸 US 🇨🇦 CA | Length: 108.17" | View on Amazon |
| DORMAN Fits: 6.7L L6 DIESEL Turbocharged | 946509 | 🇺🇸 US 🇨🇦 CA | Length: 85.97" | View on Amazon |
| DORMAN Fits: 6.7L L6 DIESEL Turbocharged | 946510 | 🇺🇸 US 🇨🇦 CA | Length: 110.06" | View on Amazon |
| DORMAN Fits: 6.7L L6 DIESEL Turbocharged | 946511 | 🇺🇸 US 🇨🇦 CA | Length: 113.09" | View on Amazon |
| TRAKMOTIVE Fits: 6.7L L6 DIESEL Turbocharged | CHP440 | 🇺🇸 US 🇨🇦 CA | Rear4 X 4 | View on Amazon |
This table covers the driveshafts that carry torque from the transmission or transfer case.
15 Drive Shaft parts for the 2018 Ram 4500 come from 2 brands — DORMAN and TRAKMOTIVE. The "Popular" part is DORMAN 938168. 1 part fits every engine; the other 14 are engine-specific.
Drive Shaft Flange Yoke
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 6.7L L6 DIESEL Turbocharged | 697608 | 🇺🇸 US 🇨🇦 CA | Front Driveshaft at Front Axle4 X 4 | View on Amazon |
This table covers the Drive Shaft Flange yokes.
One part is listed for the 2018 Ram 4500 — DORMAN 697608.
Gear Oil Additive
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| USA STANDARD GEAR Fits: all 2018 4500 engines | USA15018 | 🇺🇸 US | Friction ModifierPositraction Additive | View on Amazon |
This table covers the Gear Oil additives.
One part is listed for the 2018 Ram 4500 — USA STANDARD GEAR USA15018.
Transfer Case Assembly
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 6.4L V8 | 5146623AJ | 🇺🇸 US 🇨🇦 CA | Fits BW 44-47Manual Shift-On-The-Fly Transfer Case | View on Amazon |
| MOPAR Fits: 6.4L V8 | 5146627AH | 🇺🇸 US 🇨🇦 CA | Fits BW 44-46Elec Shift-On-The-Fly Transfer Case | View on Amazon |
| MOPAR Fits: 6.4L V8 | 5146627AJ | 🇺🇸 US 🇨🇦 CA | Fits BW 44-46Elec Shift-On-The-Fly Transfer Case | View on Amazon |
| MOPAR Fits: 6.4L V8 | 68309778AE | 🇺🇸 US 🇨🇦 CA | Fits BW 44-474.88 Rear Axle Ratio, Manual Shift-On-The-Fly Transfer Case | View on Amazon |
| MOPAR Fits: 6.4L V8 | 68309779AE | 🇺🇸 US 🇨🇦 CA | Fits BW 44-464.88 Rear Axle Ratio, Electric Shift-On-The-Fly Transfer Case | View on Amazon |
This table covers the Transfer Case assemblies.
MOPAR supplies the 5 Transfer Case Assembly parts for the 2018 Ram 4500.
Part numbers include MOPAR 5146623AJ, MOPAR 5146627AH and MOPAR 5146627AJ, among others listed above.
Transfer Case Control Lever
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 6.4L V8 | 52105551AC | 🇺🇸 US 🇨🇦 CA | Fits Manual Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 4or Manual Shift-On-The-Fly Transfer Case | View on Amazon |
This table covers the levers that shift the transfer case.
This group shows a single part: MOPAR 52105551AC.
Transfer Case Control Module
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2018 4500 engines | 599099 | 🇺🇸 US 🇨🇦 CA | 4 X 4with Sales Code DK1 (Manual Shift Transfer Case) | View on Amazon |
| MOPAR Fits: all 2018 4500 engines | 68250127AC | 🇺🇸 US 🇨🇦 CA | Fits Elec Shift-On-The-Fly Transfer CaseRegular Cab Chassis Wheelbase 3or Elec Shift-On-The-Fly Transfer Case | View on Amazon |
This table covers the Transfer Case control modules.
2 Transfer Case Control Module parts for the 2018 Ram 4500 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.
Transfer Case Input Shaft Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: all 2018 4500 engines | RB6011 | 🇺🇸 US 🇨🇦 CA | Fits 4 X 4with Borg-Warner 4446 Transfer Case | View on Amazon |
This table covers the Transfer Case Input 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.
One part is listed for the 2018 Ram 4500 — WJB / INMOTION PARTS RB6011.
Transfer Case Input Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Fits: all 2018 4500 engines | 710941 | 🇺🇸 US 🇨🇦 CA | 4 X 4with Borg-Warner 4447 Transfer Case | View on Amazon |
| WJB / INMOTION PARTS Fits: all 2018 4500 engines | WS710941 | 🇺🇸 US 🇨🇦 CA | Width (In): 0.39400000000000002 In | View on Amazon |
This table covers the seals at the Transfer Case Input 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.
2 Transfer Case Input Shaft Seal parts for the 2018 Ram 4500 come from 2 brands — NATIONAL and WJB / INMOTION PARTS. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
Part numbers include NATIONAL 710941 and WJB / INMOTION PARTS WS710941.
Transfer Case Motor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 6.4L V8 | TCM100 | 🇺🇸 US 🇨🇦 CA | Finish: All Standard | View on Amazon |
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.
This group shows a single part: STANDARD MOTOR PRODUCTS TCM100.
Transfer Case Output Shaft Bearing
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular Fits: 6.4L V8 | RB6208 | 🇺🇸 US 🇨🇦 CA | Fits Rear4 X 4 | View on Amazon |
| WJB / INMOTION PARTS Fits: 6.4L V8 | RB6307 | 🇺🇸 US 🇨🇦 CA | Front Rearward4 X 4 | View on Amazon |
| WJB / INMOTION PARTS Fits: 6.4L V8 | RB6309 | 🇺🇸 US 🇨🇦 CA | Front Forward4 X 4 | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Popular Fits: 6.4L V8 | 208 | 🇺🇸 US 🇨🇦 CA | Fits Rear4 X 4 | View on Amazon |
| BCA Fits: 6.4L V8 | NB309 | 🇺🇸 US 🇨🇦 CA | Fits Front Forwardwith Borg Warner 4446 Transfer Case | View on Amazon |
| NATIONAL Fits: 6.4L V8 | 307 | 🇺🇸 US 🇨🇦 CA | Front Rearward4 X 4 | View on Amazon |
| NATIONAL Fits: 6.4L V8 | 309 | 🇺🇸 US 🇨🇦 CA | Front Forward4 X 4 | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Fits: 6.4L V8 | NB307 | 🇺🇸 US 🇨🇦 CA | Fits Front Rearwardwith Borg Warner 4446 Transfer Case | View on Amazon |
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.
8 Transfer Case Output Shaft Bearing parts for the 2018 Ram 4500 come from 3 brands — WJB / INMOTION PARTS, NATIONAL and BCA. The "Popular" part is WJB / INMOTION PARTS RB6208.
The Economy section: 3 options from WJB / INMOTION PARTS. WJB / INMOTION PARTS RB6208 is listed in this group.
Standard Replacement: 4 parts, from NATIONAL and BCA. A representative part number is NATIONAL 208.
1 further part sits outside the graded sections, with the same engine-level match.
Part numbers include WJB / INMOTION PARTS RB6208, WJB / INMOTION PARTS RB6307 and WJB / INMOTION PARTS RB6309, among others listed above.
Transfer Case Output Shaft Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Fits: 6.4L V8 | NS99189 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| NATIONAL Fits: 6.4L V8 | 99189 | 🇺🇸 US 🇨🇦 CA | Front4 X 4 | View on Amazon |
| WJB / INMOTION PARTS Fits: 6.4L V8 | WS99189 | 🇺🇸 US 🇨🇦 CA | Front4 X 4 | View on Amazon |
This table covers the wear sleeves used to restore a Transfer Case Output Shaft seal surface.
3 Transfer Case Output Shaft Repair Sleeve parts are listed for the 2018 Ram 4500, from BCA, NATIONAL and WJB / INMOTION PARTS.
Listed part numbers: BCA NS99189, NATIONAL 99189 and WJB / INMOTION PARTS WS99189.
Transfer Case Output Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Popular Fits: 6.4L V8 | 710661 | 🇺🇸 US 🇨🇦 CA | Fits Front4 X 4 | View on Amazon |
| NATIONAL Popular Fits: 6.4L V8 | 710943 | 🇺🇸 US 🇨🇦 CA | Rear4 X 4 | View on Amazon |
| BCA Fits: 6.4L V8 | NS710661 | 🇺🇸 US 🇨🇦 CA | Fits Frontwith Borg Warner 4476 Transfer Case | View on Amazon |
| NATIONAL Fits: 6.4L V8 | 710942 | 🇺🇸 US 🇨🇦 CA | Rear4 X 4 | View on Amazon |
| WJB / INMOTION PARTS Fits: 6.4L V8 | WS710943 | 🇺🇸 US 🇨🇦 CA | Rear4 X 4 | View on Amazon |
| WJB / INMOTION PARTS Fits: 6.4L V8 | WS710942 | 🇺🇸 US 🇨🇦 CA | Rear4 X 4 | View on Amazon |
| WJB / INMOTION PARTS Fits: 6.4L V8 | WS710661 | 🇺🇸 US 🇨🇦 CA | Fits Front4 X 4 | View on Amazon |
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.
7 Transfer Case Output Shaft Seal parts are listed for the 2018 Ram 4500, from NATIONAL, WJB / INMOTION PARTS and BCA. NATIONAL 710661 carries the "Popular" badge.
Part numbers include NATIONAL 710661, NATIONAL 710943 and BCA NS710661, among others listed above.
Transfer Case Shift Linkage
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 6.4L V8 | 68105049AB | 🇺🇸 US 🇨🇦 CA | Transfer Case | View on Amazon |
| MOPAR Fits: 6.4L V8 | 68105053AC | 🇺🇸 US 🇨🇦 CA | Transfer Case | View on Amazon |
This table covers the Transfer Case Shift linkages.
2 Transfer Case Shift Linkage parts for the 2018 Ram 4500 come from MOPAR.
This group includes MOPAR 68105049AB and MOPAR 68105053AC.
Transfer Case Shift Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Fits: 6.4L V8 | 330385 | 🇺🇸 US 🇨🇦 CA | 4 X 4with Borg-Warner 4446 Transfer Case | View on Amazon |
| WJB / INMOTION PARTS Fits: 6.4L V8 | WS330385 | 🇺🇸 US 🇨🇦 CA | 4 X 4 | View on Amazon |
| WJB / INMOTION PARTS Fits: 6.4L V8 | WS710690 | 🇺🇸 US 🇨🇦 CA | 4 X 4with Borg-Warner 4447 Transfer Case | View on Amazon |
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.
3 Transfer Case Shift Shaft Seal parts for the 2018 Ram 4500 come from 2 brands — WJB / INMOTION PARTS and NATIONAL.
Part numbers include NATIONAL 330385, WJB / INMOTION PARTS WS330385 and WJB / INMOTION PARTS WS710690.
Transfer Case Vent
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 6.4L V8 | 68206423AA | 🇺🇸 US 🇨🇦 CA | Fits Manual Shift-On-The-Fly Transfer CaseCrew Cab Wheelbase 4 | View on Amazon |
This table covers the vents on the transfer case.
This group shows a single part: MOPAR 68206423AA.
Transfer Case Vent Hose Clip
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 6.4L V8 | 52105544AA | 🇺🇸 US 🇨🇦 CA | Fits Regular Cab Chassis Wheelbase 3Manual Trans | View on Amazon |
This table covers the Transfer Case Vent Hose clips.
One part is listed for the 2018 Ram 4500 — MOPAR 52105544AA.
Universal Joint
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DANA Fits: 6.4L V8 | 15160X | 🇺🇸 US 🇨🇦 CA | SVLGreasable | View on Amazon |
| DANA Fits: 6.4L V8 | 15155X | 🇺🇸 US 🇨🇦 CA | SVLGreasable | View on Amazon |
| DANA Fits: 6.4L V8 | 25160X | 🇺🇸 US 🇨🇦 CA | Spicer SelectGreasable | View on Amazon |
| DANA Fits: 6.4L V8 | 25155X | 🇺🇸 US 🇨🇦 CA | Spicer SelectGreasable | View on Amazon |
| DANA Fits: 6.4L V8 | 253212X | 🇺🇸 US 🇨🇦 CA | Spicer SelectNon-Greasable | View on Amazon |
| WJB / INMOTION PARTS Fits: 6.4L V8 | UJT232 | 🇺🇸 US 🇨🇦 CA | Grade Type: Performance-Bearing Greaseable | View on Amazon |
| WJB / INMOTION PARTS Fits: 6.4L V8 | UJT231 | 🇺🇸 US 🇨🇦 CA | Grade Type: Performance-Non-Greaseable | View on Amazon |
| WJB / INMOTION PARTS Fits: 6.4L V8 | UJT331 | 🇺🇸 US 🇨🇦 CA | Grade Type: STD-Greaseable | View on Amazon |
| WJB / INMOTION PARTS Fits: 6.4L V8 | UJT232A | 🇺🇸 US 🇨🇦 CA | Grade Type: Performance-Greaseable | View on Amazon |
| WJB / INMOTION PARTS Fits: 6.4L V8 | UJT261 | 🇺🇸 US 🇨🇦 CA | Grade Type: Performance-Bearing Greaseable | View on Amazon |
| WJB / INMOTION PARTS Fits: 6.4L V8 | UJT262 | 🇺🇸 US 🇨🇦 CA | Grade Type: Performance-Non-Greaseable | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOOG Popular Fits: 6.4L V8 | 232A | 🇺🇸 US 🇨🇦 CA | Super StrengthGreasable | View on Amazon |
| ACDELCO Fits: 6.4L V8 | 45U0304 | 🇺🇸 US 🇨🇦 CA | Greasable Super Strength | View on Amazon |
| DANA Fits: 6.4L V8 | 51410X | 🇺🇸 US 🇨🇦 CA | Spicer Life Series (SPL)Non-Greasable | View on Amazon |
| DANA Fits: 6.4L V8 | 51410XP | 🇺🇸 US 🇨🇦 CA | Spicer Life Series (SPL) PlusNon-Greasable | View on Amazon |
| DANA Fits: 6.4L V8 | 514101X | 🇺🇸 US 🇨🇦 CA | Spicer Life Series (SPL)Greasable | View on Amazon |
| DANA Fits: 6.4L V8 | SPL70X | 🇺🇸 US 🇨🇦 CA | Spicer Life Series (SPL)Non-Greasable | View on Amazon |
| DANA Fits: 6.4L V8 | SPL701X | 🇺🇸 US 🇨🇦 CA | Spicer Life Series (SPL)Greasable | View on Amazon |
| GMB Fits: 6.4L V8 | 2150178 | 🇺🇸 US 🇨🇦 CA | Performance GradeGreasable | View on Amazon |
| MOOG Fits: 6.4L V8 | 231 | 🇺🇸 US 🇨🇦 CA | Super StrengthNon-Greasable | View on Amazon |
| MOOG Fits: 6.4L V8 | 232 | 🇺🇸 US 🇨🇦 CA | Super StrengthGreasable | View on Amazon |
| MOOG Fits: 6.4L V8 | 487 | 🇺🇸 US 🇨🇦 CA | Super StrengthGreasable | View on Amazon |
| MOOG Fits: 6.4L V8 | 262 | 🇺🇸 US 🇨🇦 CA | Super StrengthNon-Greasable | View on Amazon |
| MOOG Fits: 6.4L V8 | 291 | 🇺🇸 US 🇨🇦 CA | Super StrengthNon-Greasable | View on Amazon |
| MOOG Fits: 6.4L V8 | 279 | 🇺🇸 US 🇨🇦 CA | Super StrengthGreasable | View on Amazon |
| MOOG Fits: 6.4L V8 | 261 | 🇺🇸 US 🇨🇦 CA | Super StrengthGreasable | View on Amazon |
| SKF Fits: 6.4L V8 | UJ295 | 🇺🇸 US 🇨🇦 CA | Brute Force Greaseable | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DANA Popular Fits: 6.4L V8 | 53212X | 🇺🇸 US 🇨🇦 CA | SpicerNon-Greasable | View on Amazon |
| GMB Popular Fits: 6.4L V8 | 2100447 | 🇺🇸 US 🇨🇦 CA | Non-Greasable1.188" Bearing Cap Diameter | View on Amazon |
| MOOG Popular Fits: 6.4L V8 | 331 | 🇺🇸 US 🇨🇦 CA | Greasable | View on Amazon |
| MOOG Popular Fits: 6.4L V8 | 331A | 🇺🇸 US 🇨🇦 CA | Fits Front Driveshaft At Front Axle4 X 4 | View on Amazon |
| MOOG Popular Fits: 6.4L V8 | 479 | 🇺🇸 US 🇨🇦 CA | Fits Front Axle Shaft - Left Outer4 X 4 | View on Amazon |
| ACDELCO Fits: 6.4L V8 | 45U0300 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| ACDELCO Fits: 6.4L V8 | 45U2351 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| ACDELCO Fits: 6.4L V8 | 45U00000 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| DANA Fits: 6.4L V8 | 5160X | 🇺🇸 US 🇨🇦 CA | SpicerGreasable | View on Amazon |
| DANA Fits: 6.4L V8 | 5155X | 🇺🇸 US 🇨🇦 CA | SpicerGreasable | View on Amazon |
| DANA Fits: 6.4L V8 | 5275X | 🇺🇸 US 🇨🇦 CA | SpicerGreasable | View on Amazon |
| FVP Fits: 6.4L V8 | 2100447 | 🇺🇸 US 🇨🇦 CA | Non-Greasable1.188" Bearing Cap Diameter | View on Amazon |
| FVP Fits: 6.4L V8 | 2300155 | 🇺🇸 US 🇨🇦 CA | GreasableGrease Fitting in Cross | View on Amazon |
| GMB Fits: 6.4L V8 | 2110178 | 🇺🇸 US 🇨🇦 CA | GreasableGrease Fitting in Cross | View on Amazon |
| GMB Fits: 6.4L V8 | 2300155 | 🇺🇸 US 🇨🇦 CA | GreasableGrease Fitting in Cross | View on Amazon |
| GMB Fits: 6.4L V8 | 2140006 | 🇺🇸 US 🇨🇦 CA | Non-Greasable | View on Amazon |
| MOOG Fits: 6.4L V8 | 358 | 🇺🇸 US 🇨🇦 CA | Fits Rear Driveshaft At Rear Axle4 X 4 | View on Amazon |
| MOPAR Fits: 6.4L V8 | 68036714AA | 🇺🇸 US 🇨🇦 CA | Kit | View on Amazon |
| SKF Fits: 6.4L V8 | UJ330 | 🇺🇸 US 🇨🇦 CA | Greaseable | View on Amazon |
| SKF Fits: 6.4L V8 | UJ330C | 🇺🇸 US 🇨🇦 CA | Greaseable | View on Amazon |
| SKF Fits: 6.4L V8 | UJ358 | 🇺🇸 US 🇨🇦 CA | Greaseable | View on Amazon |
| SKF Fits: 6.4L V8 | UJ358SP | 🇺🇸 US 🇨🇦 CA | Greaseable | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 6.4L V8 | 68034436AC | 🇺🇸 US 🇨🇦 CA | Kit | View on Amazon |
This table covers the U-joints in the driveshaft.
50 Universal Joint parts are listed for the 2018 Ram 4500, from DANA, MOOG, WJB / INMOTION PARTS and 5 other brands. MOOG 232A carries the "Popular" badge. Economy, Heavy Duty and Standard Replacement are all represented, and Standard Replacement alone accounts for 22 parts.
Universal Joint Strap Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: 6.4L V8 | UJT33110 | 🇺🇸 US 🇨🇦 CA | Front Shaft All Joints0.75" Bolt Length | View on Amazon |
| WJB / INMOTION PARTS Fits: 6.4L V8 | UJT49210 | 🇺🇸 US 🇨🇦 CA | Front Shaft All Joints1.50" Bolt Length | View on Amazon |
| WJB / INMOTION PARTS Fits: 6.4L V8 | UJT35110 | 🇺🇸 US 🇨🇦 CA | Rear Shaft All JointsOE Series: Spicer 1480/1550 Half-Round | View on Amazon |
This table covers the Universal Joint Strap kits.
WJB / INMOTION PARTS supplies the 3 Universal Joint Strap Kit parts for the 2018 Ram 4500.
Listed part numbers: WJB / INMOTION PARTS UJT33110, WJB / INMOTION PARTS UJT49210 and WJB / INMOTION PARTS UJT35110.
Universal Joint U-Bolt Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: 6.4L V8 | UJT33010 | 🇺🇸 US 🇨🇦 CA | Front Shaft All JointsOE Series: Spicer 1350/1410 Half-Round | View on Amazon |
| WJB / INMOTION PARTS Fits: 6.4L V8 | UJT35810 | 🇺🇸 US 🇨🇦 CA | Rear Shaft All JointsOE Series: Spicer 1480/1550 Half-Round | View on Amazon |
This table covers the Universal Joint U-Bolt kits.
2 Universal Joint U-Bolt Kit parts for the 2018 Ram 4500 come from WJB / INMOTION PARTS.
Part numbers include WJB / INMOTION PARTS UJT33010 and WJB / INMOTION PARTS UJT35810.
Buying Drivetrain Parts for a 2018 Ram 4500
On this vehicle, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware.
- Match the engine first. Some drivetrain 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 differential or transfer-case fluid with any axle or seal job while everything is already open.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Universal Joint and Drive Shaft .
Frequently Asked Questions
How many drivetrain parts fit the 2018 Ram 4500?
Our catalog currently lists 162 drivetrain parts for the 2018 Ram 4500 across 29 subcategories and 18 brands, covering both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 2018 Ram 4500 engines?
Some do. 59 parts fit every engine; the other 103 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 drivetrain problems on a 2018 Ram 4500?
Common symptoms include clicking in tight turns, a clunk when shifting between drive and reverse, vibration that builds with speed, or gear oil on the inside of a wheel. 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 differential or transfer-case fluid with any axle or seal job while everything is already open.
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 2018 Ram 4500 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 2018 Ram 4500?
First match the engine — each row shows which engine(s) the part fits. Then a torn CV boot caught early is a cheap boot kit; caught late it is a whole axle — inspect before deciding which to buy. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2018 Ram 4500
Drivetrain Parts for Other Ram 4500 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.