SKF 21768 Automatic Transmission Seal - Rear

Reliable Automatic Transmission Seal for GM Heavy-Duty Vehicles

The SKF 21768 automatic transmission seal is engineered to provide durable sealing performance for select Cadillac, Chevrolet, and GMC heavy-duty models. Designed with precision dimensions and a polyacrylate sealing surface, this seal helps maintain transmission integrity under demanding conditions.

• Width: 1.504 inches for optimal fit and sealing
• Outside Diameter: 3.031 inches ensuring proper housing compatibility
• Shaft Diameter: 2.176 inches tailored for specific transmission shafts
• Sealing Surface Type: Polyacrylate for enhanced wear resistance and sealing reliability
• Compatible with multiple GM heavy-duty models including Escalade, Sierra 2500 HD, and Silverado 3500 HD

Technical Details and Material Specifications

The SKF 21768 automatic transmission seal features a polyacrylate sealing surface, which offers excellent resistance to heat and transmission fluids, reducing the risk of leaks and premature wear. The precise width of 1.504 inches and outside diameter of 3.031 inches ensure a secure fit within the transmission housing. The shaft diameter of 2.176 inches matches the transmission shaft dimensions of compatible vehicles, providing a tight seal to prevent fluid loss and contamination.

Compatible Vehicles and Applications

This transmission seal is compatible with a range of GM heavy-duty vehicles, including Cadillac Escalade, Escalade ESV, and Escalade EXT, as well as Chevrolet Express 2500 and 3500, GMC Savana 2500 and 3500, Sierra 2500 HD and 3500 HD, Silverado 2500 HD and 3500 HD, Suburban 2500, and Yukon XL 2500. The SKF 21768 is designed specifically for automatic transmissions in these models, ensuring proper fit and function.

• Prevents transmission fluid leaks in heavy-duty GM vehicles
• Reduces risk of contamination entering the transmission system
• Maintains transmission pressure for consistent shifting performance
• Helps avoid costly transmission repairs due to seal failure
• Supports longevity of transmission components by maintaining proper lubrication

Installation Notes and Tips

When installing the SKF 21768 automatic transmission seal, ensure the transmission housing and shaft are clean and free of debris. Lubricate the sealing surface lightly with compatible transmission fluid to ease installation and prevent damage. Use appropriate tools to press the seal evenly into place without distortion. Verify the seal dimensions match the original part to ensure compatibility with your Cadillac Escalade or Chevrolet Silverado transmission.

Quality Assurance and Warranty Information

SKF manufactures the 21768 transmission seal to meet strict quality standards, using durable materials and precise engineering. While specific warranty details may vary, SKF products typically come with a limited warranty against manufacturing defects. This seal is designed to provide reliable service life when installed and maintained according to manufacturer guidelines.