FAG SS2690 Transfer Case Output Shaft Seal - Front or Rear

Transfer Case Output Shaft Seal for Classic GM 4x4s

The FAG SS2690 transfer case output shaft seal is built for applications that need a precise sealing fit at the transfer case output. With a nitrile sealing material, metal reinforcement, spring tension, and an auxiliary lip, this seal is designed to help keep lubricant in place while blocking dirt, dust, and moisture from entering the assembly. It is a direct-fit option for select Chevrolet Blazer, Chevrolet K10 Suburban, Chevrolet K20 Suburban, and GMC Jimmy models.

Key Features

• Part number SS2690 for transfer case output shaft sealing applications
• Nitrile sealing material for dependable fluid resistance
• Metal, spring, and auxiliary lip seal design
• Bore diameter: 2.502 in. / 63.551 mm
• Seal outside diameter: 2.506 in. / 63.652 mm
• Seal width: 1.625 in. / 41.275 mm
• Cross-reference part numbers include BBB Industries 16246 and National 473010

Detailed Description

FAG SS2690 is a transfer case output shaft seal engineered to match demanding dimensional requirements for service on older GM 4x4 driveline applications. The seal’s nitrile material is selected for sealing performance, while the metal case, spring-loaded lip, and auxiliary lip help maintain contact at the shaft surface and reduce contamination intrusion. This part number SS2690 is listed for front and rear positions depending on the vehicle and transfer case configuration.

Compatible With 1969-1974 Chevrolet Blazer, front and rear; 1967-1974 Chevrolet K10 Suburban, front; 1967-1974 Chevrolet K20 Suburban, front and rear; and 1970-1972 GMC Jimmy, front. It also cross-references BBB Industries 16246 and National 473010 for the same application. For buyers searching Chevrolet Blazer transfer case output shaft seal SS2690 or GMC Jimmy transfer case seal replacement, this part provides the specified dimensions needed for the listed driveline setups.

What It Helps Address

• Gear oil leakage at the transfer case output shaft
• Contamination from dirt, dust, and moisture entering the seal area
• Loss of lubricant around the transfer case output
• Wear-related sealing issues on older 4x4 driveline assemblies
• Replacement needs during transfer case service on classic Chevrolet and GMC trucks

Installation Notes and Tips

Verify bore diameter, seal outside diameter, and seal width before installation to confirm the seal matches the housing and shaft dimensions. Clean the sealing surface thoroughly and inspect the shaft for grooves, corrosion, or wear that could affect sealing performance. Confirm whether your vehicle uses the front or rear position listed in the fitment data before ordering.

Quality Assurance

FAG designs seals to meet vehicle manufacturer specifications and works with suppliers to maintain its quality standards. The SS2690 is built to the dimensional and material requirements expected for transfer case sealing service on the listed Chevrolet and GMC applications.