National 108 Transfer Case Output Shaft Bearing

National 108 Transfer Case Output Shaft Bearing

National 108 is a transfer case output shaft bearing built to OE-quality standards for driveline service. With a 40.000 mm bore, 68.000 mm outside diameter, and 15.000 mm width, this single row radial ball bearing is sized for specific transfer case and axle applications across BMW, INFINITI, Ford, Dodge, Mazda, Chrysler, and Mitsubishi vehicles.

Key Features

• Part number: National 108
• Transfer case output shaft bearing / ball bearing design
• Single row radial construction for driveline support
• 40.000 mm bore, 68.000 mm outside diameter, 15.000 mm width
• OE-quality manufacturing for consistent fit and bearing life
• Cross-reference example: SKF 6008-J

Product Details

National 108 is a Type A-1 bearing in the 100 series, engineered for transfer case output shaft service where precise dimensions and stable rotation matter. The 1.575-inch bore and 2.677-inch outside diameter align with applications using Magna ATC35L, Fuji-Univance ETX13B/ETX13C, New Process 244HD, Spicer TC28, Borg-Warner 1350, and Mazda transfer case or axle assemblies. This part number is commonly searched for BMW xDrive and INFINITI AWD repair work, including BMW 328i xDrive, BMW X5-related driveline service, and INFINITI Q50/QX60 transfer case applications. National 108 is also referenced in aftermarket catalogs under interchange part numbers such as SKF 6008-J.

Common Problems This Bearing Can Address

• Transfer case noise during acceleration or deceleration
• Vibration from worn output shaft support
• Rough or noisy driveline rotation
• Excess bearing play in the transfer case assembly
• Wear-related driveline instability in AWD and 4WD systems

Installation Notes and Tips

Verify bore, outside diameter, and width before installation, and confirm the transfer case code or axle application listed in the vehicle fitment. Press-fit bearing replacement should be performed with proper support tools to avoid damaging the inner or outer race. Clean the housing thoroughly, inspect the shaft and seals for wear, and match the bearing to the exact front, front forward, rear, or front outer position shown in the vehicle listing. For BMW xDrive and INFINITI AWD models, confirm the transfer case designation before ordering National 108.

Quality Assurance

National states that this bearing is manufactured to meet or exceed OE quality standards and built to exacting specifications for lasting performance and extended bearing life. That focus on dimensional accuracy and premium bearing construction supports dependable service in transfer case and driveline applications.