National 710544 Automatic Transmission Manual Shaft Seal

Overview of National 710544 Automatic Transmission Manual Shaft Seal

The National 710544 automatic transmission manual shaft seal is engineered to provide reliable sealing performance for a variety of vehicle models. Designed with durable nitrile material, this oil seal helps maintain transmission fluid integrity and prevents leaks in critical drivetrain components.

• Inside diameter options: 0.472 inch (12.000 mm)
• Outside diameter: 0.757 inch (19.230 mm)
• Thickness: 0.295 inch (7.500 mm)
• Sealing material: Nitrile for resistance to heat and wear
• Overall width with side lip: 0.354 inch (9.000 mm)
• Compatible with multiple makes including Buick, Cadillac, Chevrolet, Ford, GMC, Lincoln, Mazda, Mercury, Pontiac, Saab, and Saturn

Technical Specifications and Material Details

This automatic transmission manual shaft seal from National is constructed from nitrile, a synthetic rubber known for its excellent resistance to petroleum-based fluids and high temperatures. The seal features a precise inside diameter of 0.472 inch (12 mm) to fit the manual shaft, and an outside diameter of 0.757 inch (19.230 mm) to ensure a secure fit within the housing bore of 0.748 inch (19 mm). The thickness of 0.295 inch (7.5 mm) and an overall width including the side lip of 0.354 inch (9 mm) provide a robust sealing surface to prevent fluid leakage and contamination.

Compatible Vehicles and Fitment Details

The National 710544 seal is compatible with a wide range of vehicles, including popular models such as the Buick LaCrosse, Cadillac SRX, Chevrolet Equinox, Ford Explorer, GMC Terrain, Lincoln MKX, Mazda CX-9, Mercury Sable, Pontiac G6, Saab 9-4X, and Saturn Vue. This part is designed specifically for automatic transmissions requiring a manual shaft seal with the specified dimensions, ensuring proper fit and function.

Common Applications and Problem Resolution

• Prevents transmission fluid leaks around the manual shaft
• Reduces contamination ingress into the transmission system
• Maintains proper hydraulic pressure within the transmission
• Helps avoid premature wear of transmission components
• Addresses issues related to worn or damaged shaft seals causing fluid loss

Installation Notes and Recommendations

When installing the National 710544 automatic transmission manual shaft seal, ensure the shaft and housing bore are clean and free of debris. Lubricate the seal lip with transmission fluid before installation to reduce initial wear. Use appropriate tools to press the seal evenly into the housing bore without distortion. Verify the seal is seated flush and inspect for any damage prior to reassembly.

Quality Assurance and Warranty Information

National transmission seals are manufactured to meet OEM specifications, using high-quality nitrile material for durability and resistance to transmission fluids. The 710544 part number undergoes rigorous quality control to ensure consistent performance. Warranty coverage details should be confirmed with the original equipment manufacturer or distributor.