FAG SS3113 Transfer Case Input Shaft Seal

Transfer Case Input Shaft Seal for Ford and Ram

The FAG SS3113 transfer case input shaft seal is built for applications that need a precise sealing fit at the transfer case input. It uses a metal and spring seal design with Viton sealing material to help maintain a tight seal around the shaft in demanding driveline environments. This part number is used across select Ford F-250 Super Duty, Ford F-350, Dodge Ram 2500, and Dodge Ram 3500 applications.

Key Features

• Transfer case input shaft seal for select 1999-2014 Ford and Ram trucks
• Metal and spring seal construction for stable sealing performance
• Viton sealing material for resistance to heat and fluid exposure
• Bore diameter: 2.884 in / 73.254 mm
• Seal outside diameter: 2.889 in / 73.381 mm
• Seal width: 2.125 in / 53.975 mm
• Cross-references Gates 21239 and National 710652 for the same application

Detailed Description

FAG SS3113 is a transfer case input shaft seal engineered for specific Ford and Ram driveline applications. The seal’s metal and spring design helps maintain consistent contact at the shaft, while the Viton sealing material is selected for durability in transfer case service. With precise bore, outside diameter, and width dimensions, this seal is intended to match the required fit for the listed transfer case applications, including New Process 271 and New Process 273 transfer cases where noted. If you are servicing a Ford F-250 Super Duty, Ford F-350, Dodge Ram 2500, or Dodge Ram 3500 transfer case, SS3113 provides the dimensional accuracy needed for a proper replacement.

What This Seal Helps Address

• Fluid leakage at the transfer case input shaft
• Contamination from dirt, dust, and moisture entering the sealed area
• Loss of lubricant around the transfer case input
• Wear-related sealing issues during transfer case service
• Replacement needs on high-mileage Ford and Ram driveline systems

Installation Notes and Tips

Confirm transfer case type and application before installation, especially on Ram 2500 and Ram 3500 models listed with New Process 271 or New Process 273 transfer cases. Verify seal dimensions against the original part and inspect the shaft surface for wear, scoring, or contamination before installing the new seal. Clean the bore and sealing surface thoroughly so the seal seats evenly. For Ford F-250 Super Duty and Ford F-350 applications, confirm the transfer case configuration matches the vehicle listing before assembly.

Quality Assurance

FAG designs seals using materials selected to meet vehicle manufacturer specifications and quality standards. The SS3113 is built to support the sealing demands of transfer case service in Ford and Ram applications, with attention to fit, material selection, and contamination control.