FAG SS2983 Differential Pinion Seal - Rear, Rear Inner or Rear Outer

FAG SS2983 Differential Pinion Seal

FAG SS2983 is a differential pinion seal built for rear axle service where shaft sealing and contamination control matter. It uses a nitrile sealing material with a metal spring and auxiliary lip design to help maintain a tight seal at the pinion area.

Compatible With a wide range of Chevrolet, GMC, Cadillac, Buick, Oldsmobile, Pontiac, and Isuzu rear axle applications, including many 8.50" ring gear and 1.938" shaft setups. This FAG SS2983 seal is specified for numerous classic and late-model GM driveline applications.

Key Features

• Part number: SS2983
• Differential pinion seal for rear axle service
• Seal type: metal, spring, auxiliary lip
• Sealing material: nitrile
• Bore diameter: 2.762 in / 70.155 mm
• Seal outside diameter: 2.766 in / 70.256 mm
• Seal width: 1.938 in / 12.7 mm
• Designed to help block dirt, dust, and moisture at the axle end

Detailed Description

FAG SS2983 is engineered for rear differential pinion sealing where dimensional accuracy and material selection are critical. The nitrile sealing element is paired with a metal case, spring tension, and auxiliary lip to support consistent sealing performance around the pinion shaft. With a 2.762-inch bore diameter, 2.766-inch outside diameter, and 1.938-inch width, this seal matches the dimensional requirements listed for many GM rear axle applications.

Fitment coverage includes vehicles such as the Chevrolet Astro rear, GMC Safari rear, Chevrolet S10 rear, Cadillac Escalade rear, and Chevrolet Silverado rear. It also appears across many older GM platforms, including Chevrolet C1500, GMC K1500, Pontiac Firebird, Buick LeSabre, and Oldsmobile Cutlass applications. This part cross-references Davico Mfg 19273 and LIQUI MOLY 2043 for the same application.

What It Helps Address

• Gear oil seepage at the differential pinion area
• Contamination from dirt, dust, and moisture entering the axle housing
• Grease or lubricant loss around the seal surface
• Noise or wear concerns related to a compromised rear axle seal
• Service replacement for worn pinion seal applications on GM driveline platforms

Installation Notes and Tips

Verify the axle configuration, ring gear size, and shaft dimensions before installation. Several listed applications require attention to rear axle design details such as 8.50" ring gear, Dana 60 axle, or first-design notes. Clean the sealing surface thoroughly and inspect the pinion yoke or shaft for wear before installing the new seal.

For best results, match the vehicle year, make, model, and rear position exactly as listed. Confirming the application against the existing seal dimensions helps ensure proper fit on Chevrolet, GMC, and related GM rear axle assemblies.

Quality Assurance

FAG designs seals using high-quality materials and application-specific specifications to meet vehicle manufacturer requirements. The SS2983 follows those standards for dimensional fit and sealing performance in demanding driveline environments.