FAG SS2950 Differential Pinion Seal - Front, Rear or Rear Rearward

FAG SS2950 Differential Pinion Seal

FAG SS2950 is a differential pinion seal built with a metal case, spring, and auxiliary lip to help maintain a tight seal at the axle pinion. The Viton sealing material is selected for demanding driveline service where heat, oil exposure, and contamination resistance matter.

Compatible with a wide range of Ford, Dodge, and Jeep rear and front axle applications, this seal is a direct-fit service part for vehicles such as the Ford F-350 Super Duty, Dodge Ram 2500, and Jeep Cherokee. The FAG SS2950 is engineered to match vehicle-specific sealing requirements for the axle position listed in the fitment data.

Key Features

• Part number: SS2950
• Differential pinion seal for driveline and axle service
• Metal case with spring and auxiliary lip design
• Viton sealing material for durability in demanding conditions
• Bore diameter: 3.16 in / 80.264 mm
• Outside diameter: 3.165 in / 80.391 mm
• Seal width: 1.875 in / 47.625 mm
• Built to meet vehicle manufacturer specifications

Detailed Description

FAG SS2950 is designed for axle and differential sealing applications where the pinion area must stay protected from dirt, dust, and moisture while retaining lubricant inside the assembly. Its metal, spring-loaded construction and auxiliary lip help support consistent sealing performance across the listed Ford E-350 Super Duty, Dodge Ram 3500, and Jeep Grand Cherokee applications. This part cross-references Gates 18896 and National 719316 for the same application.

Use SS2950 when servicing rear axle pinion seals on vehicles listed in the fitment data, including 2001-2008 Ford F-350 Super Duty, 1996-2001 Dodge Ram 1500, and 2002-2004 Jeep Liberty. The seal dimensions and material selection are aligned to the application-specific requirements of the axle and ring gear configurations shown.

What It Helps Fix

• Gear oil leakage at the differential pinion area
• Contamination entering the axle housing through a worn seal
• Loss of lubricant that can affect bearing and gear protection
• Seal wear from age, heat, and driveline service conditions
• Noise or driveline concerns associated with low axle lubricant levels

Installation Notes and Tips

Confirm axle type, position, and ring gear configuration before installation. This seal is listed for rear and front applications depending on vehicle and axle setup, so match the vehicle notes carefully before ordering. Inspect the pinion yoke and sealing surface for wear or grooves, and replace any damaged components that could prevent the new seal from seating correctly.

For fitment examples, SS2950 fits 2001-2008 Ford F-350 Super Duty, rear; fits 1996-2001 Dodge Ram 1500, rear; and fits 2002-2004 Jeep Liberty, rear. It also fits 1979-1997 Ford F-350, front, and 1994-1999 Dodge Ram 2500, front, when the listed axle notes match.

Quality Assurance

FAG designs seals using high-quality materials and works with suppliers to meet FAG quality standards. The manufacturer states these seals are built to meet vehicle manufacturer specifications and to protect wheel-end and driveline components from contamination while helping retain grease or lubricant over the service life of the bearing or seal assembly.