National 710308 Engine Crankshaft Seal - Front

Overview of National 710308 Engine Crankshaft Seal

The National 710308 engine crankshaft seal is designed to provide reliable sealing performance for various vehicle models including Chevrolet, Hyundai, Kia, Nissan, and Pontiac. Engineered with precision, this oil seal helps maintain engine integrity by preventing oil leaks around the crankshaft.

• Inside diameter: 1.575 inches (40.000 mm)
• Outside diameter: 2.055 inches (52.200 mm)
• Thickness: 0.236 inches (6.000 mm)
• Sealing material: Polyacrylate for enhanced durability
• Clockwise-spiral lip design for effective sealing
• Compatible housing bore: 2.047 inches (52.000 mm)

Technical Details and Material Specifications

The National 710308 crankshaft seal features a polyacrylate sealing material known for its resistance to heat and oil degradation. Its clockwise-spiral lip design ensures a tight seal around the crankshaft, reducing the risk of oil leakage. The seal’s dimensions include a 1.575-inch inside diameter and a 2.055-inch outside diameter, fitting housing bores measuring approximately 2.047 inches. With a thickness of 0.236 inches, this seal balances durability and flexibility to maintain engine performance.

Compatible Vehicles and Applications

This engine crankshaft seal is compatible with a range of vehicles, including Chevrolet models, Hyundai Elantra, Elantra Coupe, Elantra GT, Forte, Forte5, Forte Koup, Kona, Optima, Sonata, Soul, Tucson, Veloster, Kia models, Nissan Sentra and Pulsar NX, Pontiac I-Mark, Impulse, Rondo, Storm, Stylus, Spectrum, and Geo Sunburst. The part number 710308 ensures precise fitment for these applications.

Common Issues Addressed by the National 710308 Seal

• Prevents oil leaks around the crankshaft area
• Reduces engine contamination from external debris
• Maintains proper oil pressure within the engine
• Minimizes wear on crankshaft bearings
• Helps avoid costly engine repairs due to seal failure

Installation Notes and Tips

When installing the National 710308 crankshaft seal, ensure the housing bore and shaft surfaces are clean and free of debris. Use appropriate tools to press the seal evenly into place without damaging the sealing lip. Verify the seal orientation matches the clockwise-spiral lip design for optimal performance. Lubricate the seal lip lightly with engine oil before installation to reduce initial wear.

Quality Assurance and Warranty Information

National manufactures the 710308 crankshaft seal to meet industry standards for durability and performance. The polyacrylate material and precise engineering contribute to a reliable sealing solution. While specific warranty details may vary, National typically offers coverage against manufacturing defects to ensure customer confidence in the product.