National 710447 Engine Crankshaft Seal - Front

Overview of National 710447 Engine Crankshaft Seal

The National 710447 engine crankshaft seal is designed to provide reliable sealing performance for various Jeep models, including Cherokee, CJ5, CJ7, Grand Wagoneer, J10, J20, and Wagoneer. Engineered with precision, this oil seal helps maintain engine integrity by preventing oil leaks around the crankshaft.

• Inside diameter: 2.000 inches (50.800 mm)
• Outside diameter: 2.750 inches (69.850 mm)
• Thickness/width: 0.369 inches (9.373 mm)
• Material: Durable polyacrylate compound
• Helix type: Clockwise-spiral lip design for effective sealing
• Housing bore size: 2.745 inches (69.723 mm)
• Redicoat coating for enhanced wear resistance
• Part number: 710447, Series 710400

Technical Details and Material Specifications

The National 710447 crankshaft seal features a polyacrylate material known for its resistance to heat, oil, and wear, making it suitable for demanding engine environments. The seal’s clockwise-spiral lip design ensures a tight fit around the crankshaft, minimizing oil leakage and contamination. With an inside diameter of 2.000 inches and an outside diameter of 2.750 inches, this seal fits precisely within the housing bore of 2.745 inches, ensuring optimal sealing performance. The 0.369-inch thickness provides durability without compromising flexibility.

Compatible Jeep Models and Applications

This engine crankshaft seal is compatible with a range of Jeep vehicles, including Cherokee, CJ5, CJ7, Grand Wagoneer, J10, J20, and Wagoneer models. It is specifically designed to replace worn or damaged seals in these vehicles, helping to maintain engine oil containment and prevent leaks that can lead to engine damage.

• Prevents oil leaks around the crankshaft
• Reduces contamination of engine oil
• Maintains engine performance and longevity
• Addresses wear and tear from engine operation
• Replaces damaged or hardened seals

Installation Notes and Tips

When installing the National 710447 crankshaft seal, ensure the housing bore and shaft surfaces are clean and free of debris. Use appropriate tools to press the seal evenly into the housing bore without damaging the sealing lip. Verify the seal orientation matches the clockwise-spiral lip design for proper function. Lubricate the seal lip lightly with clean engine oil before installation to reduce initial wear.

Quality Assurance and Warranty Information

National’s 710447 crankshaft seal is manufactured to meet industry standards for durability and performance. The seal includes a Redicoat coating to enhance wear resistance and extend service life. While specific warranty details may vary, National products typically come with a limited warranty against manufacturing defects, ensuring reliability for your Jeep engine maintenance needs.