InMotion WTHM88510 Differential Pinion Race - Front Outer or Rear Outer

Differential Pinion Race for Driveline Service

The InMotion WTHM88510 differential pinion race is built for driveline applications that demand stable bearing support and low-friction rotation. Made from case carburized steel, it is suited for rear outer and front outer positions across a wide range of Ford, BMW, Mercedes-Benz, Chevrolet, GMC, Dodge, and Jeep applications.

Use WTHM88510 when servicing a differential or axle assembly that needs a precise bearing cup surface for consistent operation. This part is a direct-fit solution for many vehicles, including Ford E-350 Super Duty rear outer applications and BMW 188 differential setups.

Key Features

• Case carburized steel construction for strength and wear resistance
• Outside diameter: 2.875 in. (73.03 mm)
• Width: 0.906 in. (23.02 mm)
• Bearing cup radius: 0.13 in. (3.3 mm)
• Fits rear outer and front outer differential applications
• Engineered for smooth rotational support and reduced friction
• Part number: WTHM88510

Detailed Description

InMotion WTHM88510 is a differential pinion race designed to provide a durable bearing surface inside the axle or differential assembly. The case carburized steel construction supports long service life in demanding automotive and industrial environments, while the dimensional profile helps maintain proper bearing seating and rotational stability. This makes it a practical choice for differential service on vehicles such as the Ford F-250 Super Duty, Chevrolet Express 2500, and BMW X5, as well as many other listed applications.

This part cross-references common OE-style differential bearing race applications for the same service position. The WTHM88510 designation is useful when matching the correct race to the axle or differential specification during repair.

What It Helps Address

• Noise from worn or pitted differential bearing surfaces
• Excessive play or instability in the pinion bearing area
• Rough rotation caused by damaged race surfaces
• Wear-related driveline vibration during acceleration or deceleration
• Service issues in axle assemblies requiring a replacement bearing cup

Installation Notes and Tips

Confirm axle type, differential specification, and bearing dimensions before installation. This part is listed for many rear outer and front outer applications, including Ford E-350 Super Duty with Spicer 70-2U axle, Ford F-250 Super Duty with Spicer 60-SF axle, and BMW 188 differential applications. Press-fit bearing races should be installed with the correct tools to avoid damage to the race or housing. Always inspect the mating bearing, pinion, and related components for wear before reassembly.

Quality Assurance

InMotion supplies this bearing race as a precision driveline component built from case carburized steel for durability and consistent fit. Verify vehicle, axle, and differential specifications against the fitment list before ordering. Part number WTHM88510 is cataloged for broad application coverage across multiple makes and models.

Fitment

• Fits 2014-2018 Ford E-350 Super Duty, rear outer, with Spicer 70-2U Axle
• Fits 2009-2012 Ford E-350 Super Duty, rear outer, with Spicer 70-2U Axle
• Fits 2002-2003 Ford E-350 Super Duty, rear outer, with Spicer 70-2U Axle
• Fits 1999-2000 Ford E-350 Super Duty, rear outer, with Spicer 70-2U Axle
• Fits 2005-2018 Ford F-250 Super Duty, front outer, with Spicer 60-SF Axle
• Fits 2005-2018 Ford F-350 Super Duty, front outer, with Spicer 60-SF Axle
• Fits 2003-2017 Chevrolet Express 2500, rear outer, with Spicer 60 Axle
• Fits 2003-2017 GMC Savana 2500, rear outer, with Spicer 60 Axle
• Fits 2003-2014 Ford E-250, rear outer, with Spicer 60-1 Axle
• Fits 2010-2012 Mercedes-Benz GL350, front outer, Mercedes-Benz 4Matic System
• Fits 2007-2012 Mercedes-Benz GL450, front outer, Mercedes-Benz 4Matic System
• Fits 2006-2012 Mercedes-Benz R350, front outer, Mercedes-Benz 4Matic System
• Fits 2006-2011 Mercedes-Benz ML350, front outer, Mercedes-Benz 4Matic System
• Fits 2006-2009 BMW 323i, rear outer, with BMW 188K Differential
• Fits 2007-2009 BMW 328i, rear outer, with BMW 188K Differential
• Fits 2007-2009 BMW 335i, rear outer, with BMW 188N Differential
• Fits 2004-2009 BMW X3, rear outer, with BMW 188K Differential
• Fits 2000-2009 BMW X5, rear outer, with BMW 188K Differential
• Fits 2004-2006 Dodge Ram 1500, rear outer, with Spicer 60 Axle
• Fits 2002-2005 Chevrolet Silverado 1500, rear outer, with Spicer 60 Axle
• Fits 2002-2005 GMC Sierra 1500, rear outer, with Spicer 60 Axle