NSK R55-34U42 Differential Bearing - Rear

NSK Rear Differential Bearing for Toyota Tundra

The NSK R55-34U42 is a rear differential bearing built for Toyota Tundra applications from 2007-2021. It uses premium OE technology with a vehicle-specific fit and performance profile, along with a low-friction, superfinished raceway for smooth operation under load.

For Toyota Tundra rear differential service, the NSK R55-34U42 supports precise bearing location and consistent drivetrain operation. NSK supplies OE-level bearing technology to major vehicle manufacturers, and this part reflects that engineering focus in a direct replacement format.

Key Features

• Premium OE technology with vehicle-specific fit and performance
• Long-life, low-friction bearing design
• Superfinished precision-matched bearing raceway
• Inside diameter: 55 mm
• Outside diameter: 92 mm
• Kit contents: 1 cup, 1 cone

Detailed Description

The NSK R55-34U42 differential bearing is engineered for rear axle service on Toyota Tundra models. Its OE-style construction helps maintain proper differential support, while the precision-matched raceway promotes smooth rolling contact and stable operation. If you are replacing a worn rear differential bearing on a 2007-2021 Toyota Tundra, this NSK part number R55-34U42 provides the dimensional and application-specific match needed for the job.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Rear differential bearing noise
• Excessive drivetrain vibration from worn bearing surfaces
• Rough or inconsistent differential rotation
• Wear-related looseness in the rear differential assembly
• Service replacement for a damaged Toyota Tundra rear differential bearing

Installation Notes and Tips

• Fits 2021 Toyota Tundra, Rear.
• Fits 2007-2020 Toyota Tundra, Rear.
• Confirm bearing dimensions before installation: 55 mm inside diameter and 92 mm outside diameter.
• Inspect the differential race, seals, and related wear surfaces during service.
• Use proper bearing installation tools to avoid damaging the cup or cone.

Quality Assurance

NSK is a global manufacturer of advanced rolling bearings and an established OE supplier to major automakers and suppliers. The R55-34U42 reflects that OE-focused engineering approach for Toyota Tundra rear differential service.