National 710927 Wheel Seal - Rear or Rear Inner

Wheel Seal for Heavy-Duty Rear Axles

National 710927 is a metric wheel seal built for rear axle sealing on select Chevrolet Silverado HD and GMC Sierra HD applications. It uses a fluoro-elastomer sealing material and a bi-directional lip design to support consistent sealing performance in demanding driveline service.

National has supplied sealing solutions for more than 75 years, and this wheel seal reflects that focus on dimensional accuracy and modern vehicle coverage. The 710927 is also referenced by Timken SL260069 and SKF 29587A for the same application.

Key Features

• Part number: National 710927
• Wheel seal / oil seal for driveline and axle sealing applications
• Fluoro-elastomer material for sealing durability
• Bi-directional lip design
• Metric dimensions for precise housing and shaft fit
• Outside diameter: 4.000 in. (101.600 mm)
• Flanged outside diameter: 4.240 in. (107.700 mm)
• Housing bore: 3.996 in. (101.500 mm)
• Shaft size: 2.961 in. (75.200 mm)
• Width: 0.433 in. (11.000 mm)

Detailed Description

National 710927 is a rear wheel seal engineered for select Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, and GMC Sierra 3500 HD rear axle applications. It also fits 2016-2019 Chevrolet Suburban 3500 HD rear applications. The seal’s metric sizing, fluoro-elastomer construction, and bi-directional lip profile support a controlled seal interface where axle and hub components require dependable fluid retention.

Use National 710927 when replacing a worn rear inner seal on 2011-2019 Chevrolet Silverado 2500 HD rear inner, 2011-2019 Chevrolet Silverado 3500 HD rear inner, 2011-2019 GMC Sierra 2500 HD rear inner, or 2011-2019 GMC Sierra 3500 HD rear inner applications. It also fits 2020-2021 Chevrolet Silverado 2500 HD rear, 2020-2021 Chevrolet Silverado 3500 HD rear, 2020-2021 GMC Sierra 2500 HD rear, and 2020-2021 GMC Sierra 3500 HD rear.

What It Helps Address

• Rear axle fluid seepage at the wheel end
• Contamination entering the hub or axle seal area
• Seal wear from age, heat, and mileage
• Leak-related maintenance on Chevrolet Silverado HD and GMC Sierra HD rear axles
• Service replacement for a damaged or hardened wheel seal

Installation Notes and Tips

Verify housing bore, shaft diameter, and seal width before installation. Clean the seal bore and shaft surface thoroughly, and inspect the hub, axle, and bearing area for wear or scoring that could affect sealing. Confirm the application position before ordering: Fits 2020-2021 Chevrolet Silverado 2500 HD, Rear; Fits 2020-2021 Chevrolet Silverado 3500 HD, Rear; Fits 2020-2021 GMC Sierra 2500 HD, Rear; Fits 2020-2021 GMC Sierra 3500 HD, Rear; Fits 2011-2019 Chevrolet Silverado 2500 HD, Rear Inner; Fits 2011-2019 Chevrolet Silverado 3500 HD, Rear Inner; Fits 2016-2019 Chevrolet Suburban 3500 HD, Rear; Fits 2011-2019 GMC Sierra 2500 HD, Rear Inner; Fits 2011-2019 GMC Sierra 3500 HD, Rear Inner.

Quality Assurance

National has a long history in sealing technology and continues to develop sealing solutions for current vehicle platforms. Part number 710927 is built to match the listed metric dimensions and application coverage for select Chevrolet Silverado HD and GMC Sierra HD rear axle service.