InMotion WTHM89249 Differential Pinion Bearing - Front Inner, Rear Inner or Rear Outer

Differential Pinion Bearing for Driveline Service

InMotion WTHM89249 is a taper-style differential pinion bearing built for driveline applications that demand stable rotation and reduced friction. With a cylindrical bearing form, 1.44 in. inside diameter, and 1.135 in. width, it supports smooth operation in a wide range of rear and front axle assemblies.

Compatible With 1981-2018 Chevrolet, GMC, Cadillac, Pontiac, Buick, Oldsmobile, Isuzu, Honda, Dodge, Mitsubishi, and Hummer applications, this bearing is used in multiple rear inner, rear outer, and front inner positions depending on axle configuration. WTHM89249 is a direct-fit service part for many vehicles, including Chevrolet Silverado 1500, Tahoe, Camaro, and GMC Sierra 1500 applications with the correct ring gear or axle setup.

Key Features

• Taper bearing type for differential pinion service
• 1.44 in. inside diameter and 1.135 in. width
• Cylindrical bearing construction
• Low-friction operation for rotational stability
• Universal-style design used across multiple axle configurations
• Part number: WTHM89249

Detailed Description

Built from high-quality materials, this differential pinion bearing is intended for automotive and industrial driveline use where consistent rotation and durability matter. The tapered bearing design helps support load handling in pinion and axle assemblies, while the compact dimensions make it suitable for a broad range of service applications. InMotion WTHM89249 is used across many OE-style repair scenarios, including rear outer bearings on 2014-2018 Cadillac Escalade and Chevrolet Silverado 1500 models with a 9.76 in. ring gear, as well as rear inner and front inner applications on older GM, Isuzu, Honda, Mitsubishi, and Dodge platforms.

This part cross-references common differential bearing applications used in axle rebuilds and pinion service. For buyers searching by vehicle, WTHM89249 is a practical match for Chevrolet Camaro rear inner bearing service, GMC Yukon rear outer bearing service, and Chevrolet Colorado front inner bearing service when the axle configuration matches the listed notes.

Common Problems This Bearing Can Address

• Excessive differential noise from worn pinion bearings
• Rough or inconsistent driveline rotation
• Friction-related wear inside the axle assembly
• Loss of pinion support in high-mileage differentials
• Service needs during axle or differential rebuilds

Installation Notes and Tips

Verify the axle type, ring gear size, and bearing position before installation. This bearing is listed for rear inner, rear outer, and front inner locations depending on the vehicle, so match the notes exactly to the application. Confirm inside diameter, width, and cone radius against the original bearing before assembly. Proper differential setup and bearing preload are important for long service life, so installation should follow the vehicle-specific service procedure.

Quality Assurance

InMotion supplies this bearing as a service replacement built for consistent fit and dependable operation across multiple driveline applications. The design focuses on smooth rotation, reduced friction, and durability in demanding automotive environments.