Timken 710508 Differential Pinion Seal - Rear or Rear Outer

Timken 710508 Differential Pinion Seal

Timken 710508 is a differential pinion seal built for rear axle service on a wide range of Chevrolet, GMC, Dodge, and Ram trucks and vans. It is engineered to retain gear lubricant, block road debris, and support consistent sealing in demanding driveline applications.

Key Features

• Precision sealing design helps keep differential lubricant inside the axle housing.
• Reinforced outer case helps resist installation damage and improve durability.
• Ribbed rubber inner diameter helps seal minor spindle imperfections and promote a secure seat.
• Internal contamination exclusion system helps reduce debris intrusion that can lead to leakage.
• Vent holes promote lubricant flow around the seal lip to help manage heat buildup.

Detailed Description

This Timken differential pinion seal is used in rear axle assemblies where the pinion shaft passes through the housing. It is a direct-fit service part for many heavy-duty applications, including Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, GMC Sierra 3500 HD, Express and Savana vans, and select Ram 2500 and Ram 3500 models. Timken 710508 is designed for vehicles with 10.5-inch and 11.5-inch ring gear configurations where listed, including rear outer applications on certain trucks.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Problems It Helps Address

• Rear differential gear oil leaking from the pinion area
• Contamination entering the axle housing through a worn seal
• Heat-related seal wear in heavy-duty driveline use
• Loss of lubricant that can contribute to noisy or rough differential operation
• Seal damage caused by age, mileage, or installation wear

Installation Notes and Tips

Confirm ring gear size, axle configuration, and position before ordering. This seal is listed for rear and rear outer applications depending on vehicle and axle setup. Inspect the pinion surface for grooves or imperfections before installation, and verify the housing is clean so the new seal can seat properly. For best results, match the application exactly to the vehicle notes shown for Chevrolet Silverado, GMC Sierra, Express, Savana, and Ram models.

Quality Assurance

Timken oil and grease seals use reinforced construction and contamination-control features to support reliable sealing performance in driveline service.