FAG SS2619 Transfer Case Output Shaft Seal - Rear

Transfer Case Output Shaft Seal for Ford Trucks

The FAG SS2619 transfer case output shaft seal is built for applications that need reliable sealing at the transfer case output. It uses a nitrile sealing material with a metal-and-spring seal design to help keep lubricant in place while blocking dirt, dust, and moisture from entering the assembly.

Compatible with 1969-1976 Ford F-100 rear applications and 1975-1976 Ford F-150 rear applications, this seal is sized for the specified bore and outside diameter requirements. The FAG SS2619 is also listed for 1975-1976 Ford F-150 with Spicer 21 notes, making it a direct-fit option for the confirmed vehicle applications.

Key Features

• Part number: SS2619
• Transfer case output shaft seal for rear applications
• Metal and spring seal construction
• Nitrile sealing material for durable sealing performance
• Bore diameter: 2.623 in. / 66.624 mm
• Seal outside diameter: 2.627 in. / 66.726 mm
• Seal width: 1.563 in. / 39.7 mm
• Cross-references Bosch 15699 and National 470682

Detailed Description

FAG SS2619 is a transfer case output shaft seal engineered to match the dimensional and material requirements of the listed Ford truck applications. The nitrile sealing element and spring-loaded metal design help maintain a consistent seal at the output shaft, where contamination control and lubricant retention are critical to transfer case operation. This part number is used in 1969-1976 Ford F-100 rear applications and 1975-1976 Ford F-150 rear applications, including the noted Spicer 21 configuration.

This seal is a practical replacement for Ford F-100 and Ford F-150 transfer case service when the original seal shows wear, leakage, or contamination-related damage. The FAG SS2619 part number is also referenced by Bosch 15699 and National 470682 for the same application.

What It Helps Fix

• Transfer case fluid seepage at the output shaft
• Contamination entering the transfer case through a worn seal
• Grease or lubricant loss around the shaft area
• Seal wear caused by age, heat, and road exposure
• Noise or driveline issues related to low fluid level from leakage

Installation Notes and Tips

Verify bore diameter, outside diameter, and seal width before installation to confirm the seal matches the housing and shaft dimensions. Inspect the output shaft surface for grooves, corrosion, or damage before fitting the new seal. Clean the sealing area thoroughly so the nitrile lip can seat properly and maintain contact during operation. Confirm the vehicle application against the listed Ford F-100 and Ford F-150 fitment details before ordering.

Quality Assurance

FAG designs seals using high-quality materials and application-specific specifications to meet vehicle manufacturer requirements. The SS2619 follows the listed dimensional standards for the confirmed Ford truck applications and is built to support contamination control and lubricant retention in transfer case service.