National 3920 Axle Differential Bearing Race - Rear, Rear Inner or Rear Outer

Overview of National 3920 Axle Differential Bearing Race

The National 3920 axle differential bearing race is engineered for reliable performance in heavy-duty driveline applications. Designed to fit a range of Chevrolet, Dodge, Ford, GMC, and Ram trucks, this taper bearing cup ensures precise fitment and durability.

• Compatible with Chevrolet Silverado 3500, Sierra 3500 HD, and Express 3500 models
• Fits Dodge Ram 2500 and Ram 3500 series trucks
• Suitable for Ford F-250 and F-350 heavy-duty pickups
• Cup bore diameter of 4.4375 inches (112.713 mm) for accurate seating
• Cup length of 0.9375 inches (23.813 mm) providing proper bearing support
• Cup radius of 0.125 inches (3.175 mm) designed for taper bearing compatibility

Product Specifications and Features

The National 3920 bearing race features a taper bearing cup design optimized for axle differential assemblies. The cup bore measures 4.4375 inches (112.713 mm), ensuring a precise fit within the axle housing. With a cup length of 0.9375 inches (23.813 mm), it provides adequate surface area for bearing contact, reducing wear and maintaining alignment. The cup radius of 0.125 inches (3.175 mm) is engineered to match taper bearing profiles, facilitating smooth rotation and load distribution.

Applications and Vehicle Compatibility

This axle differential bearing race is compatible with a variety of heavy-duty trucks, including Chevrolet Silverado 3500 Classic, Sierra 1500, and GMC Sierra 3500 Classic models. It also fits Dodge Ram 2500 and 3500 series trucks, as well as Ford F-250 and F-350 pickups. The National 3920 is designed to meet the demands of these vehicles’ driveline systems, ensuring proper bearing seating and axle performance.

• Replaces worn or damaged axle differential bearing races
• Addresses noise or vibration issues related to bearing wear
• Prevents premature bearing failure in heavy-duty truck axles
• Restores proper bearing alignment and axle function
• Supports drivetrain longevity under heavy load conditions

Installation Notes and Tips

When installing the National 3920 bearing race, ensure the axle housing is clean and free of debris. Use appropriate tools to press the bearing cup evenly into the bore without damaging the cup radius or bore surface. Verify the cup bore dimensions match the axle housing specifications to avoid misalignment. Proper lubrication of the bearing surfaces is recommended to facilitate installation and operation.

Quality Assurance and Warranty

National manufactures the 3920 axle differential bearing race to meet industry standards for durability and precision. While specific warranty details are not provided, National products typically adhere to strict quality control processes to ensure reliable performance in demanding automotive applications.