Timken 710506 Differential Pinion Seal - Front or Rear

Timken Differential Pinion Seal 710506

Timken 710506 is a differential pinion seal for rear axle service on a wide range of GM trucks, SUVs, and vans. It helps retain gear oil at the pinion while keeping dirt and road debris out of the differential housing.

• Precision sealing design helps control lubricant loss
• Reinforced outer case resists installation damage and adds durability
• Ribbed rubber inner diameter helps seal minor spindle imperfections
• Internal contamination exclusion system helps block debris entry
• Vent holes promote lubricant flow around the seal lip to reduce heat build-up

Detailed Application Coverage

This differential pinion seal is used in rear axle service across applications such as Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Tahoe, GMC Yukon, and Cadillac Escalade models. It also covers select front applications on 2008 Chevrolet Trailblazer and 2008 GMC Envoy with manual transmission, along with additional rear axle fitments for Express, Savana, Avalanche, Suburban, Yukon XL, and related GM platforms. Part number 710506 is a direct-fit service seal for many GM 8.5-inch and 8.6-inch ring gear applications.

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

What It Helps Fix

• Gear oil leaking from the pinion area
• Contamination entering the differential housing
• Seal wear from heat and lubricant breakdown
• Minor sealing issues caused by shaft surface imperfections
• Noise or driveline concerns related to low differential fluid level

Installation Notes and Tips

Inspect the pinion yoke or shaft sealing surface before installation and replace any worn or grooved components as needed. Clean the housing bore thoroughly, verify the axle configuration and ring gear size, and confirm the vehicle-specific notes for 3.42 ratio, 8.5-inch, 8.6-inch, or manual-transmission applications before service. Proper seal seating and correct lubricant level are important after installation.

Quality Assurance

Timken oil and grease seals use precision sealing designs and contamination control features to support dependable driveline service. Part number 710506 is built for GM rear axle and select front axle applications listed in the fitment data.