Timken NP378971 Differential Pinion Race - Front Outer
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Timken

Timken NP378971 Differential Pinion Race - Front Outer

Brand Timken NP378971
Position Front Outer
Fits Dodge · 8 vehicles

Tapered roller bearing component. Engineered for higher speeds, heavier loads, and longer life.

Handles radial and axial loads. Built for durability in a compact space.

Replace cone and cup together. Helps maximize reliability and service life.

Cross-references SKF NP378971 for the same application. See all 1.

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Timken NP378971 Differential Pinion Race

The Timken NP378971 differential pinion race is a tapered roller bearing cup built for driveline service where radial and axial loads must be managed together. It is a direct replacement choice for 2003-2010 Dodge Ram 1500 front outer applications with an 8 inch ring gear transfer case output shaft bearing note.

Key Features

  • Timken tapered roller bearing component for differential and driveline use
  • Supports combined radial and axial loading in a compact bearing package
  • Engineered for durability and consistent bearing performance
  • Front outer fitment for 2003-2010 Dodge Ram 1500
  • Part number NP378971 for easy identification and ordering

Detailed Description

Timken NP378971 is a differential pinion race used in driveline and axle service where the bearing cup must maintain proper support under load. Timken’s tapered roller bearing design is known for handling both side load and vertical load, which is important in transfer case and differential assemblies that see frequent torque changes. This part fits 2003-2010 Dodge Ram 1500, front outer, and the fitment note specifies compatibility with an 8 inch ring gear transfer case output shaft bearing. The NP378971 part number is also cross-referenced by SKF under the same application.

What It Helps Fix

  • Noise from a worn or pitted differential pinion race
  • Excessive play in the bearing seat area
  • Rough rotation in the transfer case output shaft bearing assembly
  • Metal wear caused by bearing surface damage
  • Loss of smooth driveline operation in a Dodge Ram 1500 front outer setup

Installation Notes and Tips

Inspect the matching cone and replace the inner cone and outer cup together to restore proper bearing contact and service life. Clean the housing thoroughly before installation, verify the bearing seat is free of scoring, and confirm the 8 inch ring gear transfer case output shaft bearing specification before assembly. Proper press-fit installation and correct preload setup are important for long-term performance.

Quality Assurance

Timken is a recognized global manufacturer of tapered roller bearings, with engineering focused on load capacity, speed capability, and bearing life. The NP378971 is built to Timken bearing standards for driveline service.

This part fits 8 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelDrive TypePositionNotes
2010DodgeRam 15004WDFront OuterCompatible with 8 Inch Ring Gear transfer case output shaft bearing.
2009DodgeRam 15004WDFront OuterCompatible with 8 Inch Ring Gear transfer case output shaft bearing.
2008DodgeRam 15004WDFront OuterCompatible with 8 Inch Ring Gear transfer case output shaft bearing.
2007DodgeRam 15004WDFront OuterCompatible with 8 Inch Ring Gear transfer case output shaft bearing.
2006DodgeRam 15004WDFront OuterCompatible with 8 Inch Ring Gear transfer case output shaft bearing.
2005DodgeRam 15004WDFront OuterCompatible with 8 Inch Ring Gear transfer case output shaft bearing.
2004DodgeRam 15004WDFront OuterCompatible with 8 Inch Ring Gear transfer case output shaft bearing.
2003DodgeRam 15004WDFront OuterCompatible with 8 Inch Ring Gear transfer case output shaft bearing.
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
SKF — NP378971