InMotion WTM804049 Differential Pinion Bearing - Front or Rear Inner

InMotion WTM804049 Differential Pinion Bearing

The InMotion WTM804049 is a taper differential pinion bearing built for driveline and axle service across a wide range of rear inner and transmission applications. With a cylindrical bearing form, 1.875 in. inside diameter, and 1 in. width, it is sized for precise rotational support where stable pinion operation and reduced friction matter.

Compatible With Chrysler axle rear inner service and New Process 4500 transmission applications, this bearing is used in a broad mix of Dodge, Chevrolet, GMC, Chrysler, Buick, Cadillac, Oldsmobile, Pontiac, and Mitsubishi vehicles. The WTM804049 is a practical replacement choice when you need consistent bearing support in high-load automotive driveline systems.

Key Features

• Differential pinion bearing for driveline and axle repair
• Taper bearing design for stable load handling
• 1.875 in. inside diameter and 1 in. width
• Cylindrical bearing profile for precise fitment
• Built for rear inner axle locations and select transmission applications
• Part number: WTM804049

Detailed Description

InMotion WTM804049 is engineered as a multi-purpose bearing for automotive and industrial use, with the dimensional accuracy needed for differential pinion service. Its taper bearing construction helps maintain smooth rotation under load, while the 0.140 in. cone radius supports proper seating in the application. This part number, WTM804049, is listed across 705 vehicle applications, including rear inner Chrysler axle setups and New Process 4500 transmission use in select Chevrolet Silverado, GMC Sierra, and Dodge Ram models.

Vehicle coverage also includes long-tail search applications such as rear inner differential pinion bearing for 1994-2010 Dodge Ram 1500 with Chrysler axle, 2001-2006 Chevrolet Silverado 2500 HD with New Process 4500 transmission, and 1998-2010 Dodge Dakota rear inner service with Chrysler axle. It also appears in classic rear axle applications for Dodge D100, D250, W150, W250, and related Chrysler, Buick, Pontiac, and Oldsmobile platforms.

This part cross-references Timken SET45 and National A-45 for the same application.

What It Helps Address

• Excessive pinion bearing noise in the differential
• Rough or inconsistent driveline rotation
• Wear at the rear inner axle bearing location
• Service needs on Chrysler axle-equipped trucks and vans
• Replacement requirements for select New Process 4500 transmission applications

Installation Notes and Tips

Confirm axle or transmission configuration before ordering, since this bearing is listed for both Chrysler axle rear inner applications and select New Process 4500 transmission use. Verify inside diameter, width, and cone radius against the original bearing and inspect related races, seals, and gear wear during service. Proper bearing preload and installation technique are important for driveline longevity.

Quality Assurance

InMotion positions this bearing as a durable, multi-application replacement built from quality materials for reliable operation in automotive driveline environments. The design focus is on smooth performance, friction reduction, and stable support across demanding service conditions.

• Compatible With 1994-2010 Dodge Ram 1500, rear inner with Chrysler axle
• Compatible With 2001-2006 Chevrolet Silverado 2500 HD, with New Process 4500 transmission
• Compatible With 1998-2010 Dodge Dakota, rear inner with Chrysler axle