Fel-Pro 55487 Drive Axle Shaft Flange Gasket - Rear

Fel-Pro Rear Drive Axle Shaft Flange Gasket 55487

Fel-Pro 55487 is a rear drive axle shaft flange gasket built for service work on Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, and GMC Sierra 3500 HD applications. It is made from paper material and sized with a 3.6 inside diameter and 8 bolt holes for a precise flange seal.

Key Features

• Paper gasket material for a dependable sealing surface
• 3.6 inside diameter for the axle shaft flange interface
• 8 bolt hole design for the specified rear axle flange pattern
• Premium grade type for repair-focused sealing performance
• Compatible with rear driveline sealing service on 2011-2022 Chevrolet Silverado 2500 HD and Silverado 3500 HD
• Compatible with rear driveline sealing service on 2011-2022 GMC Sierra 2500 HD and Sierra 3500 HD

Detailed Description

Fel-Pro 55487 is a drive axle shaft flange gasket engineered for rear axle sealing service where the flange surface is not perfect or has seen wear from prior disassembly. Fel-Pro designs its gaskets for real-world repair conditions, using proprietary sealing materials to help maintain a reliable seal on demanding driveline applications. This part cross-references 20920620 for the same application. If you are servicing a rear axle flange on a Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, or GMC Sierra 3500 HD, Fel-Pro 55487 provides the correct fitment and sealing profile for the listed vehicles.

What It Is Used For

• Rear axle flange oil seepage at the shaft-to-housing sealing point
• Leak repair after axle shaft removal or driveline service
• Sealing issues caused by minor flange surface imperfections
• Maintenance on rear driveline assemblies in heavy-duty Silverado and Sierra trucks

Installation Notes and Tips

Clean both mating surfaces thoroughly before installation and inspect the flange for nicks, corrosion, or distortion. Confirm the rear axle application matches the listed Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, or GMC Sierra 3500 HD fitment before assembly. Follow the vehicle service procedure for bolt tightening sequence and torque specifications.

Quality Assurance

Fel-Pro gaskets are developed for repair environments where sealing surfaces are often less than ideal. The brand uses application-specific materials and sealing designs to support consistent performance in service work.