National 710533 Automatic Transmission Extension Housing Seal - Transmission Extension Housing To Transmission

Reliable Automatic Transmission Extension Housing Seal

The National 710533 automatic transmission extension housing seal is engineered to provide a precise fit and durable sealing solution for select Cadillac, Chevrolet, and GMC vehicles. Designed with fluoro-elastomer material, this oil seal ensures effective protection against leaks and contamination in your transmission system.

• Inside diameter: 2.063 inches (52.400 mm)
• Outside diameter: 3.007 inches (76.380 mm)
• Thickness/width: 0.394 inches (10.010 mm)
• Housing bore size: 3.000 inches (76.200 mm)
• Constructed from high-quality fluoro-elastomer for enhanced chemical and heat resistance
• Redicoat finish for improved durability and sealing performance
• Part of the National 710500 series

Product Details and Specifications

The National 710533 transmission extension housing seal is specifically designed to maintain a secure seal between the transmission extension housing and the shaft. Its fluoro-elastomer construction offers resistance to transmission fluids, heat, and wear, making it suitable for demanding automotive environments. The seal’s dimensions, including a 2.063-inch inside diameter and a 3.007-inch outside diameter, ensure compatibility with the housing bore of 3.000 inches, providing a tight and reliable fit. The 0.394-inch thickness contributes to its ability to withstand pressure and prevent fluid leakage.

Compatible Vehicles and Applications

This automatic transmission extension housing seal is compatible with a range of Cadillac, Chevrolet, and GMC models, including but not limited to:

• Cadillac ATS, CT6, CTS, Escalade, Escalade ESV, STS, XLR
• Chevrolet Avalanche, Camaro, Caprice, Colorado, Corvette, Express 2500/3500, Silverado 1500/2500 HD/3500 HD, SS, Suburban 1500/2500, Tahoe
• GMC Canyon, Savana 2500/3500, Sierra 1500/2500 HD/3500 HD, Yukon, Yukon XL, Yukon XL 1500/2500

Common Issues Addressed by This Seal

• Prevents automatic transmission fluid leaks at the extension housing
• Reduces contamination ingress that can damage transmission components
• Maintains proper pressure and fluid retention within the transmission system
• Minimizes wear on the transmission shaft and housing interface
• Helps avoid costly transmission repairs due to seal failure

Installation Notes and Tips

Ensure the transmission extension housing and shaft surfaces are clean and free of debris before installing the National 710533 seal. Use appropriate tools to press the seal evenly into the housing bore to avoid distortion. Verify the seal orientation matches the original part to maintain proper sealing function. It is recommended to inspect related transmission components during installation for wear or damage.

Quality Assurance and Warranty

Manufactured by National, the 710533 seal meets industry standards for durability and performance. The fluoro-elastomer material and Redicoat finish contribute to long service life under normal operating conditions. While specific warranty details are not provided, National products are generally backed by quality control processes to ensure reliability in automotive applications.