National 481837 Wheel Seal - Rear, Rear Inner or Rear Outer

National 481837 Wheel Seal Overview

National 481837 is a wheel seal built for rear axle sealing applications on select Jeep, Chevrolet, and GMC vehicles. It uses nitrile construction with Redicoat protection and is sized for a 1.500 inch shaft, 2.506 inch outside diameter, and 0.375 inch width.

Use this seal when servicing rear inner or rear axle positions on applications such as Jeep Cherokee, Jeep Wagoneer, and Chevrolet Blazer with the specified axle configurations. National 481837 is also cross-referenced by Bosch 15141 for the same application.

Key Features

• Part number: 481837
• Wheel seal / oil seal for driveline and axle sealing service
• Nitrile sealing material for common axle and hub applications
• Redicoat finish for added sealing surface protection
• Inside diameter: 1.500 in. / 38.100 mm
• Outside diameter: 2.506 in. / 63.650 mm
• Housing bore: 2.502 in. / 63.550 mm
• Width: 0.375 in. / 9.530 mm
• Series 480000, Type 48

Detailed Description

National 481837 is engineered as a precision axle and wheel sealing component for rear inner and rear outer service points where the shaft, housing bore, and seal width must match the original dimensions. The seal’s nitrile material and Redicoat treatment support consistent sealing performance in driveline environments, while the dimensional specs make it a direct match for applications calling for a 1.500 inch shaft and 2.506 inch outside diameter. This part number 481837 is used across multiple Jeep, Chevrolet, and GMC fitments, including Jeep Cherokee, Jeep Wagoneer, and Chevrolet Blazer rear axle service.

What It Helps Address

• Gear oil leakage at the rear axle seal area
• Contamination entering the axle housing through a worn seal
• Noise or wear caused by low lubricant level from seal failure
• Service issues during rear axle rebuilds or bearing replacement
• Seal replacement needs on Jeep Cherokee, Jeep Wagoneer, and Chevrolet Blazer rear axle applications

Installation Notes and Tips

Verify shaft diameter, housing bore, and seal width before installation to confirm the correct axle application. Clean the bore and shaft sealing surface thoroughly, and inspect for grooves, corrosion, or damage that could affect sealing performance. This seal is listed for rear inner, rear outer, and rear positions depending on the vehicle and axle configuration, including Jeep Comanche rear inner with Spicer 44-1 Heavy Duty Axle and Chevrolet Blazer rear with Spicer 60 Axle.

Quality Assurance

National has supplied premium sealing solutions for more than 75 years and continues to develop sealing components for modern vehicle service needs. The 481837 wheel seal reflects that long-running focus on dimensional accuracy and axle sealing performance.