FAG SS2911 Transfer Case Output Shaft Seal - Rear

Transfer Case Output Shaft Seal for Select Ford, GM, and Ram

The FAG SS2911 transfer case output shaft seal is built for applications that need a precise sealing interface at the transfer case output. It uses a metal case, spring tension, and an auxiliary lip with polyacrylate sealing material to help retain lubricant and block contamination at the shaft opening.

Compatible With a wide range of Ford F-150, F-250 Super Duty, Explorer, Ranger, Expedition, and Bronco applications, as well as Chevrolet Silverado, Tahoe, Suburban, Avalanche, and GMC Sierra, Yukon, and Hummer models. The FAG SS2911 is also listed for Ram 1500 rear applications and several Cadillac, Lincoln, and GMC van platforms.

Key Features

• Transfer case output shaft seal for driveline sealing service
• Metal, spring, and auxiliary lip seal design
• Polyacrylate sealing material for demanding underbody conditions
• 2.754 in. outside diameter, 2.75 in. bore diameter, and 1.875 in. width
• Cross-references National 4503N and Febi-Bilstein 18687 for the same application
• Part number: FAG SS2911

Detailed Description

FAG SS2911 is a transfer case output shaft seal engineered to match vehicle-specific sealing requirements across many 4WD and AWD platforms. The seal dimensions and construction are designed for a controlled fit at the transfer case output, helping maintain lubricant at the shaft while limiting entry of dirt, dust, and moisture. This makes it a direct service part for driveline repairs on vehicles such as the Ford F-150, Chevrolet Silverado 1500, and GMC Sierra 1500, along with many related truck and SUV applications.

The seal’s metal case supports installation stability, while the spring-loaded design and auxiliary lip help maintain sealing contact over time. FAG SS2911 is listed across model years from 1980 through 2019, with fitment covering rear and N/A positions depending on the vehicle and transfer case configuration. Part number SS2911 is a practical match for technicians replacing a worn transfer case output shaft seal on Ford, Chevrolet, GMC, Cadillac, Lincoln, Hummer, and Ram platforms.

What It Helps Fix

• Transfer case fluid seepage at the output shaft
• Contamination from road dirt, dust, and moisture
• Grease or lubricant loss around the shaft seal area
• Noise or driveline concerns caused by low fluid level
• Service issues related to a worn or hardened seal lip

Installation Notes and Tips

Verify transfer case type, output shaft dimensions, and vehicle-specific notes before installation. Clean the sealing bore and shaft surface thoroughly, and inspect for grooves, corrosion, or wear that could affect sealing performance. Proper alignment during installation is important to avoid damaging the seal lip or spring.

Use the vehicle notes in the fitment data to confirm the correct application for your Ford F-250 Super Duty, Chevrolet Express, GMC Savana, or other listed model. The SS2911 should be matched to the exact transfer case configuration, especially on vehicles with multiple transfer case or transmission variants.

Quality Assurance

FAG states that its seals are produced with high-quality materials and built to meet vehicle manufacturer specifications. The brand also works with suppliers to maintain FAG quality standards across sealing applications.