Timken 306TB Manual Transmission Output Shaft Bearing

Timken 306TB Manual Transmission Output Shaft Bearing

The Timken 306TB is a deep groove bearing used in manual transmission and transfer case applications where consistent shaft support and low operating noise matter. With precise dimensions and ISO-based interchangeability, it is a practical OE-style replacement for a wide range of Nissan, Isuzu, Mitsubishi, and other drivetrain applications.

Key Features

• Timken deep groove bearing construction for smooth shaft rotation and stable load handling
• Inside diameter: 1.181 in. / 30.00 mm
• Outside diameter: 2.835 in. / 72.00 mm
• Width: 0.748 in. / 19.00 mm
• Built with tight tolerances and a refined surface finish to support higher operating speeds under proper lubrication
• Dimensionally interchangeable with many competitor bearings that follow ISO standards
• Timken 306TB cross-references AMS Automotive 6306 and Champion Spark Plug 306 for the same application

Detailed Description

Timken 306TB is a manual transmission output shaft bearing engineered for drivetrain service where accurate fit and dependable rotation are essential. The 30 mm inner diameter, 72 mm outer diameter, and 19 mm width make it a direct-size match for many transmission and transfer case assemblies. Timken’s deep groove design helps reduce noise and vibration while maintaining consistent performance in properly lubricated systems. This bearing is commonly used in applications such as Nissan Pathfinder, Nissan 240SX, Isuzu Rodeo, Mitsubishi Montero, and related manual transmission or transfer case setups.

Because Timken follows ISO dimensional standards, the 306TB is a strong choice when replacing a worn output shaft bearing in vehicles that require precise bearing geometry. It is also a useful reference part number when searching for Timken 306TB, 306TB bearing, or manual transmission output shaft bearing for Nissan and Isuzu drivetrain repairs.

What It Helps Fix

• Transmission bearing noise from worn or rough output shaft support
• Excess vibration in manual transmission or transfer case operation
• Shaft play caused by bearing wear or loss of tolerance
• Drivetrain whine that increases with vehicle speed or load
• Fitment issues when replacing an ISO-sized 30 x 72 x 19 mm bearing

Installation Notes and Tips

Verify bearing dimensions, shaft condition, and housing wear before installation. Clean all mating surfaces and use proper lubrication during assembly to protect the bearing during initial operation. For fitment research, this part fits 1989-1998 Nissan Pathfinder, rear; 1998-2004 Isuzu Rodeo, front and rear rearward; and 1997-2004 Mitsubishi Montero Sport, front. Additional confirmed applications include 1998-2002 Isuzu Trooper, rear rearward, and 1996-1998 Nissan 240SX, rear.

• Fits 1983-2006 Mitsubishi Montero, front
• Fits 2003-2004 Isuzu Ascender, front
• Fits 2003-2004 Isuzu Ascender, rear rearward
• Fits 2002-2004 Isuzu Axiom, front
• Fits 2002-2004 Isuzu Axiom, rear rearward
• Fits 1998-2004 Isuzu Rodeo, front
• Fits 1998-2004 Isuzu Rodeo, rear rearward
• Fits 1997-2004 Mitsubishi Montero Sport, front
• Fits 2001-2003 Isuzu Rodeo Sport, front
• Fits 2001-2003 Isuzu Rodeo Sport, rear rearward
• Fits 2003 Mitsubishi Outlander, front
• Fits 1998-2002 Isuzu Trooper, front
• Fits 1998-2002 Isuzu Trooper, rear rearward
• Fits 1999-2001 Isuzu VehiCROSS, front
• Fits 1999-2001 Isuzu VehiCROSS, rear rearward
• Fits 1997-2000 INFINITI QX4, N/A, Transfer Case Output Shaft Seal TX10A
• Fits 1998-2000 Isuzu Amigo, front
• Fits 1998-2000 Isuzu Amigo, rear rearward
• Fits 1998-2000 Isuzu Hombre, front
• Fits 1998-2000 Isuzu Hombre, rear rearward
• Fits 1996-1998 Nissan 240SX, rear
• Fits 1989-1994 Nissan 240SX, rear
• Fits 1998 Nissan Frontier, rear
• Fits 1989-1998 Nissan Pathfinder, rear
• Fits 1995 Nissan Pickup, rear
• Fits 1983-1994 Mitsubishi Mighty Max, front
• Fits 1987-1993 Dodge Ram 50, front
• Fits 1983-1985 Dodge Ram 50, front
• Fits 1993 Nissan Altima, rear
• Fits 1990 Nissan Pulsar NX, rear
• Fits 1987-1989 Dodge Raider, front
• Fits 1984-1989 Nissan 300ZX, rear
• Fits 1980-1988 Nissan 200SX, rear
• Fits 1987-1988 Nissan Pathfinder, rear
• Fits 1983-1986 Dodge Power Ram 50, front
• Fits 1980-1986 Nissan 720, rear
• Fits 1982-1984 Nissan Maxima, rear
• Fits 1980-1983 Nissan 280ZX, rear
• Fits 1982 Dodge D50, front
• Fits 1979-1982 Nissan 310, N/A
• Fits 1979-1981 Nissan 310, N/A
• Fits 1980-1981 Nissan 810, rear
• Fits 1977-1980 Nissan 810, rear
• Fits 1977-1979 BMW 320i, rear
• Fits 1979 BMW 528i, rear
• Fits 1979 Nissan 280ZX, rear
• Fits 1950-1979 Volkswagen Beetle, rear
• Fits 1976-1978 BMW 530i, rear
• Fits 1969-1974 Toyota Land Cruiser, rear
• Fits 1970-1974 Toyota Pickup, rear

Quality Assurance

Timken manufactures this bearing to rigorous worldwide quality standards and tests its deep groove bearing designs for noise, vibration, and grease retention performance in demanding service conditions.