Mopar 68398739AA Differential Pinion Bearing Spacer - Front Inner
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Mopar

Mopar 68398739AA Differential Pinion Bearing Spacer - Front Inner

Brand Mopar 68398739AA
Position Front Inner
Fits Jeep · 3 vehicles

OE-style hardware. Mopar differential pinion bearing spacer for application-specific axle service.

Exact part match. Part number 68398739AA helps confirm the correct differential setup.

$47.18Free shipping
In stock · usually ships same day before 1pm CST
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Order total $47.18
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Free returns within 60 days if it doesn't fit when fitment is verified.
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Overview

Mopar differential pinion bearing spacer part number 68398739AA is a driveline hardware component used in the front inner differential assembly. It is listed for specific Jeep Wrangler and Jeep Gladiator applications, making it a fitment-focused replacement for the correct axle setup.

Compatible With 2021 Jeep Wrangler, front inner; 2020 Jeep Gladiator, front inner; and 2020 Jeep Wrangler, front inner. Use part number 68398739AA to confirm the exact differential hardware match for your application.

Key Features

  • Genuine Mopar differential pinion bearing spacer
  • Driveline and axle hardware for differential service
  • Application-specific fitment for front inner use
  • Part number 68398739AA for identification and ordering

Detailed Description

This differential pinion bearing spacer is a Mopar hardware component used in the pinion bearing stack within the differential assembly. It is cataloged for 2021 Jeep Wrangler front inner applications with Dana M210 Wide Front Axle, 3.73 Rear Axle Ratio, and Tru-Lok front and rear axles, plus 2020 Jeep Gladiator and 2020 Jeep Wrangler front inner applications. For buyers servicing Jeep Wrangler or Jeep Gladiator driveline components, 68398739AA provides a direct reference point for the correct axle hardware configuration.

Because differential spacer dimensions and stack-up requirements are application-specific, matching the exact part number is important during axle service. Mopar 68398739AA is identified for the listed front inner fitments and should be verified against the vehicle's axle configuration before installation.

What It Is Used For

  • Replacing a worn or incorrect pinion bearing spacer
  • Restoring proper differential bearing stack-up
  • Supporting correct pinion assembly setup during axle service
  • Addressing differential hardware mismatch in Jeep Wrangler and Jeep Gladiator applications

Installation Notes and Tips

Confirm axle configuration, ratio, and differential setup before ordering. This part is listed for front inner applications only, so verify the vehicle's exact driveline specification and compare the existing spacer to part number 68398739AA before installation. Differential setup should follow the service procedure for the specific axle assembly.

Quality Assurance

As a Mopar part, 68398739AA is cataloged to the manufacturer's application data for the listed Jeep Wrangler and Jeep Gladiator fitments.

This part fits 3 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelBody TypeLitersCylindersPositionNotes
2021JeepWranglerUnlimited SportSport Utility3.6LV6Front InnerDana M210 Wide Front Axle, 3.73 Rear Axle Ratio, Tru-Lok Front & Rear Axles
2020JeepGladiator——3.6LV6Front InnerVH6525
2020JeepWrangler——3.0LV6Front InnerVH6127