National 710648 Drive Axle Shaft Seal - Front Inner or Front Left

Overview of National 710648 Drive Axle Shaft Seal

The National 710648 drive axle shaft seal is engineered to provide reliable sealing performance for a range of GM and related vehicles. Designed with durable polyacrylate material, this oil seal helps maintain axle integrity and prevent fluid leaks in driveline systems.

• Constructed from high-quality polyacrylate for durability and resistance
• Inside diameter of 1.240 inches (31.5 mm) to fit specified axle shafts
• Outside diameter of 2.411 inches (61.24 mm) for precise housing bore fitment
• Thickness of 0.524 inches (13.3 mm) ensuring proper sealing depth
• Compatible with multiple GM makes and models including Chevrolet, GMC, Cadillac, and more

Detailed Product Description and Specifications

The National 710648 drive axle shaft seal is part of the 710600 series, designed specifically for driveline and axle sealing applications. Its polyacrylate construction offers resistance to heat, oil, and wear, making it suitable for demanding automotive environments. The seal features an inside diameter of 1.240 inches (31.5 mm) which matches the shaft size, and an outside diameter of 2.411 inches (61.24 mm) to fit the housing bore precisely at 2.402 inches (61 mm). With a thickness of 0.524 inches (13.3 mm), this seal ensures a secure fit to prevent oil leakage and contamination.

Compatible Vehicles and Applications

This drive axle shaft seal is compatible with a variety of vehicles, including Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, and Saab models. It is suitable for use in vehicles such as the Chevrolet Avalanche 1500, Silverado 1500 Classic, Suburban 1500, Tahoe, GMC Sierra 1500, Yukon XL 1500, Cadillac Escalade EXT, Hummer H2, and Isuzu Ascender among others. The part number 710648 is specifically designed to meet the sealing requirements of these driveline systems.

Common Issues Addressed by the Drive Axle Shaft Seal

• Prevents oil leaks from the axle housing
• Protects driveline components from dirt and debris contamination
• Maintains proper lubrication within the axle assembly
• Reduces wear on axle shafts by maintaining a sealed environment
• Helps avoid costly driveline repairs due to seal failure

Installation Notes and Tips

When installing the National 710648 drive axle shaft seal, ensure the housing bore is clean and free of debris. Use appropriate tools to press the seal evenly into place without damaging the sealing lip. Verify the shaft diameter matches the 1.240 inch specification for proper fitment. Lubricate the seal lip lightly with clean axle oil before installation to reduce initial wear. Follow vehicle-specific service manual instructions for torque specifications and installation procedures.

Quality Assurance and Warranty

National manufactures the 710648 drive axle shaft seal to meet OEM standards for fit, form, and function. The polyacrylate material is selected for its durability and resistance to automotive fluids and temperatures. This part is backed by National's quality assurance processes to ensure consistent performance. Warranty coverage details should be confirmed based on the point of purchase and vehicle application.