Timken 387A Differential Bearing

Timken 387A Differential Bearing Overview

The Timken 387A differential bearing is engineered for reliable performance in a range of vehicles including Cadillac, Chevrolet, Dodge, Ford, GMC, Jeep, and Oldsmobile models. Designed to meet precise specifications, this bearing supports driveline efficiency and durability.

• Inside diameter options: 2.250 inches (57.15 mm)
• Cone radius measurements: 0.140 inches (3.56 mm)
• Cone width dimensions: 0.864 inches (21.95 mm)
• Compatible with multiple truck and SUV models
• Part number 387A for accurate identification

Technical Specifications and Design Details

The Timken 387A differential bearing features an inside diameter of 2.250 inches (57.15 mm), ensuring a precise fit within the differential assembly. The cone radius is specified at 0.140 inches (3.56 mm), which contributes to the bearing’s ability to handle radial and axial loads effectively. Additionally, the cone width measures 0.864 inches (21.95 mm), providing the necessary surface area for stable operation under varying driving conditions. These dimensions are critical for maintaining proper gear alignment and minimizing wear in the differential system.

Compatible Vehicles and Applications

This differential bearing is compatible with a wide range of vehicles, including:

• Cadillac Eldorado and XLR
• Chevrolet Blazer, C10 Suburban, C20 Suburban, C30, C3500, Corvette
• Dodge Challenger, Charger, Ram 1500, Ram 2500, Ram 3500, Ram 2500 Van, Ram 3500 Van
• Ford F-250, F-250 Super Duty, F-350, F-350 Super Duty, E-250 Econoline, E-350 Econoline, E-250 Econoline Club Wagon, E-350 Econoline Club Wagon
• GMC Jimmy, K10 Suburban, K20 Suburban, K30, K3500, P30, P2500, P3500, R30, R3500, V30, V3500, W200, W250, W300, W350
• Jeep Comanche
• Oldsmobile Dart, Toronado

Using the Timken 387A bearing ensures compatibility and performance in these specific models, supporting driveline integrity and vehicle reliability.

Common Issues Addressed by Timken 387A Differential Bearing

• Excessive differential noise due to worn bearings
• Uneven gear wear caused by improper bearing fit
• Vibration and driveline instability
• Premature bearing failure from inadequate load handling
• Reduced differential efficiency impacting fuel economy

Installation Notes and Tips

Proper installation of the Timken 387A differential bearing is essential for optimal performance. Ensure the bearing is clean and free of debris before installation. Use appropriate tools to press the bearing into place without causing damage to the cone radius or cone width surfaces. Verify the bearing’s fit within the differential housing matches the specified inside diameter of 2.250 inches (57.15 mm). It is recommended to inspect related components such as seals and gears during installation to prevent future issues.

Quality Assurance and Warranty

Timken manufactures the 387A differential bearing to meet stringent quality standards, ensuring durability and consistent performance. While specific warranty details may vary, Timken products typically come with a limited warranty covering defects in materials and workmanship. This bearing is designed to provide reliable service when installed and maintained according to manufacturer guidelines.