Timken 308L Transfer Case Output Shaft Bearing - Front or Rear

Timken 308L Transfer Case Output Shaft Bearing

Timken 308L is a deep groove ball bearing used in transfer case and manual transmission applications that call for stable shaft support and low operating noise. It is a direct-fit option for a wide range of Toyota, Isuzu, Jeep, Ford, Chevrolet, GMC, Dodge, Pontiac, and Oldsmobile applications with confirmed fitment below.

Key Features

• Deep groove bearing design for smooth shaft rotation and dependable load handling
• Built for low noise and reduced vibration in drivetrain service
• Tight tolerances and refined surface finish support higher operating speeds under proper lubrication
• ISO-standard dimensions for interchange with many competitor bearings
• Available in Timken shielded, sealed, and snap-ring configurations across the line
• Part number 308L is cross-referenced to 308L3 and 6308NR for the same application

Detailed Description

The Timken 308L transfer case output shaft bearing is engineered for drivetrain locations where consistent alignment and smooth operation matter. In RF1A Toyota transfer cases, including 1984-2001 Toyota 4Runner, 1995-2002 Toyota Tacoma, 1996-2002 Toyota RAV4, 2000-2002 Toyota Tundra, 1979-1995 Toyota Pickup, and 1987-1989 Toyota Van, this bearing supports the output shaft with the dimensional accuracy expected from Timken. It also fits select Isuzu MUA5C and MUA5CT applications in the Amigo, Rodeo, Trooper, and Pickup.

Timken 308L is also listed for a broad range of manual transmission and transfer case applications in Jeep, Ford, Chevrolet, GMC, Dodge, Pontiac, and Oldsmobile vehicles. The bearing follows ISO standards and is dimensionally interchangeable with many competing part numbers, making it a practical replacement when matching the original bearing specification is critical.

Common Problems This Part Can Address

• Excessive drivetrain noise from a worn output shaft bearing
• Vibration or roughness in the transfer case or transmission output section
• Shaft play caused by bearing wear or fatigue
• Reduced bearing smoothness from age, contamination, or lubrication breakdown
• Fitment issues when replacing an original bearing with an ISO-sized equivalent

Installation Notes and Tips

Confirm the transfer case or transmission code before ordering, since this bearing is used across multiple drivetrain families. Match the original bearing dimensions and application notes, especially on Toyota RF1A and Isuzu MUA5C/MUA5CT units. Clean the housing thoroughly, inspect the shaft and races for scoring, and follow the manufacturer’s lubrication requirements during assembly.

Quality Assurance

Timken manufactures this bearing to rigorous worldwide quality standards and to ISO dimensional requirements for consistent replacement fitment.