SKF 21390A Transfer Case Output Shaft Seal - Rear

Reliable Transfer Case Output Shaft Seal for Ford Super Duty

The SKF 21390A transfer case output shaft seal is designed to provide a precise fit and durable sealing solution for Ford F-250 Super Duty and F-350 Super Duty models. Engineered to maintain optimal performance, this seal helps prevent fluid leaks and protects your transfer case components.

• Seal Type: HMSA92 for effective sealing performance
• Shaft Diameter: 2.114 inches ensuring accurate fitment
• Width: 0.441 inches for proper sealing depth
• Compatible with Ford F-250 Super Duty and F-350 Super Duty transfer cases
• Part Number: 21390A for easy identification and replacement

Technical Details and Specifications

The SKF 21390A transfer case output shaft seal features a HMSA92 seal type, which is designed to provide a tight barrier against contaminants and fluid leakage. With a shaft diameter of 2.114 inches and a width of 0.441 inches, this seal fits precisely on the output shaft of the transfer case, ensuring reliable operation. The dimensions are critical for maintaining the integrity of the transfer case system in Ford F-250 Super Duty and F-350 Super Duty trucks, which require robust sealing solutions due to their heavy-duty use.

Applications and Problem Solving

• Prevents transfer case fluid leaks that can lead to component damage
• Protects against dirt and debris entering the transfer case
• Maintains proper lubrication within the transfer case output shaft area
• Reduces wear on transfer case components by ensuring a secure seal
• Helps avoid costly repairs related to seal failure in Ford Super Duty trucks

Installation Notes and Tips

When installing the SKF 21390A transfer case output shaft seal, ensure the shaft diameter matches the specified 2.114 inches for proper fit. Clean the sealing surface thoroughly before installation to prevent contamination. Use appropriate tools to avoid damaging the seal during installation, and verify the seal is seated evenly to maintain effective sealing performance.

Quality Assurance and Warranty

SKF is a recognized manufacturer of automotive sealing solutions, known for precision engineering and durability. The 21390A transfer case output shaft seal is manufactured to meet OEM specifications for Ford F-250 Super Duty and F-350 Super Duty models. While specific warranty details are not provided, SKF products typically come with quality assurance backed by industry standards to ensure reliable service life.