FAG SS2987 Differential Pinion Seal - Rear

FAG SS2987 Differential Pinion Seal

FAG SS2987 is a rear differential pinion seal built for demanding driveline service on a wide range of Chevrolet and GMC trucks, vans, SUVs, and heavy-duty chassis applications. It uses a nitrile sealing material with a metal case, spring, and auxiliary lip to help retain lubricant and block contamination at the pinion area.

Fits 1980-2008 Chevrolet and GMC rear differential applications, including many 9.50-inch ring gear platforms. This part cross-references Davico Mfg 19314 and Global Parts Distributors LLC 3896 for the same application.

Key Features

• Part number SS2987 for differential pinion seal replacement
• Metal case with spring and auxiliary lip design
• Nitrile sealing material for driveline sealing service
• Built to help keep dirt, dust, and moisture out of the axle assembly
• Helps retain gear oil at the pinion seal location
• Compatible with many rear axle Chevrolet Silverado, GMC Yukon, and GMC Savana applications

Detailed Description

FAG SS2987 is engineered for rear differential pinion sealing where consistent lubricant control matters. The seal dimensions measure 2.909 inches bore diameter, 2.914 inches outside diameter, and 1.94 inches width, with metric equivalents of 73.889 mm, 74.016 mm, and 49.276 mm. Its metal-and-spring construction with an auxiliary lip supports sealing performance in axle housings that see regular road contamination and drivetrain load.

Vehicle coverage includes many rear applications such as Chevrolet C1500, K1500, Silverado, Tahoe, Suburban, Express, and GMC C/K-series, Yukon, Savana, and Sierra models. For fitment-sensitive repairs, verify the axle configuration and notes, especially 1st design and 9.50-inch ring gear applications. SS2987 is a practical choice when servicing a leaking rear pinion seal on a Chevrolet Silverado or GMC Yukon rear axle.

What It Helps Fix

• Rear differential gear oil leaking from the pinion area
• Contamination entering the axle housing through a worn seal
• Lubricant loss that can lead to noisy driveline operation
• Seal wear from age, heat, and road exposure
• Service issues on rear axle Chevrolet and GMC driveline assemblies

Installation Notes and Tips

Confirm the axle type, ring gear size, and design notes before installation. Clean the seal bore and pinion area thoroughly, inspect the yoke surface for wear, and replace any damaged sealing surface before pressing in the new seal. Proper installation depth and alignment are important for leak-free operation.

Quality Assurance

FAG designs seals to meet vehicle manufacturer specifications and works with suppliers to maintain FAG quality standards. The SS2987 is built for sealing performance in demanding rear axle service conditions.