National 710162 Engine Crankshaft Seal - Front

Overview of National 710162 Engine Crankshaft Seal

The National 710162 engine crankshaft seal is designed for reliable sealing performance in various General Motors vehicles. Engineered with fluoro-elastomer material, this oil seal ensures durability and resistance to heat and chemicals, making it suitable for Buick, Chevrolet, Oldsmobile, and Pontiac models.

• Inside diameter: 1.937 inches (49.200 mm)
• Outside diameter: 2.754 inches (69.950 mm)
• Thickness/width: 0.313 inches (7.950 mm)
• Housing bore size: 2.750 inches (69.850 mm)
• Material: Fluoro-elastomer for enhanced chemical and heat resistance
• Redicoat surface treatment for improved sealing and longevity
• Part number: 710162, Series 710100

Detailed Product Description and Specifications

The National 710162 crankshaft seal is part of the 710100 series, designed specifically to maintain oil containment around the crankshaft in internal combustion engines. Its fluoro-elastomer construction provides excellent resistance to engine oils, fuels, and high temperatures, which helps prevent leaks and premature wear. The seal features a precise inside diameter of 1.937 inches (49.200 mm) to fit the crankshaft snugly, while the outside diameter of 2.754 inches (69.950 mm) matches the housing bore of 2.750 inches (69.850 mm) for a secure fit. The thickness of 0.313 inches (7.950 mm) ensures proper sealing pressure and durability under engine operating conditions. Additionally, the Redicoat treatment enhances the seal’s surface to reduce friction and improve sealing performance over time.

Compatible Vehicles and Applications

This crankshaft seal is compatible with a range of Buick, Chevrolet, Oldsmobile, and Pontiac vehicles, including models such as the Buick LeSabre, LaCrosse, and Lucerne; Chevrolet Camaro, Impala, and Monte Carlo; Oldsmobile 88 and 98; and Pontiac Firebird, Grand Prix, and Grand Am. It is suitable for use in engines requiring a 1.937-inch shaft seal with the specified dimensions and material properties.

Common Issues Addressed by the National 710162 Seal

• Prevents oil leaks around the crankshaft area
• Reduces engine contamination from external debris
• Maintains proper oil pressure by sealing the crankshaft housing
• Minimizes premature wear of engine components due to oil loss
• Improves engine reliability and longevity

Installation Notes and Tips

• Ensure the crankshaft and housing bore are clean and free of debris before installation
• Use appropriate tools to press the seal evenly into the housing bore without damage
• Verify the seal orientation matches the engine manufacturer’s specifications
• Check for proper shaft diameter compatibility (1.937 inches) before installation
• Inspect the seal for any damage or defects prior to installation

Quality Assurance and Warranty Information

National engine crankshaft seals are manufactured to meet industry standards for durability and performance. The 710162 seal undergoes rigorous quality control to ensure dimensional accuracy and material integrity. This product includes a limited warranty against defects in materials and workmanship, providing confidence in its reliability for automotive repair and maintenance.