Engine Oil Pump Seal

National 710450 Premium Engine Oil Pump Seal Replacement

Protect your engine’s internal lubrication system and stop damaging front-end leaks with the National 710450 Engine Oil Pump Seal. The oil pump seal is subjected to continuous high rotational friction, intense engine heat, and constant oil pressure. Over time, stock seals become brittle, crack, and fail, causing oil to coat your timing belt or accessory drive and putting your engine at risk of catastrophic oil starvation. Replacing it with this premium National seal restores an absolute airtight barrier.

Advanced Thermal and Chemical Resistance

The National 710450 seal is constructed using premium-grade elastomer compounds specifically formulated to withstand the chemically aggressive nature of modern synthetic motor oils and fuel byproducts. Its specialized sealing lip features a precision-engineered tension spring that maintains constant, uniform contact with the rotating shaft, preventing leaks even during cold winter starts or high-RPM highway driving.

Key Features & Performance Benefits

• O.E. Specification Match: Engineered to original dimensions to guarantee a secure, leak-free press fit during installation.
• Durability Under Pressure: Resists thermal hardening and degradation caused by extreme internal crankcase temperatures.
• Protects Timing Components: Stops oil from leaking onto timing belts, accessory belts, and sensitive engine sensors.
• Low Friction Design: Reduces friction wear on the mating shaft surface to prevent grooving and extend component life.

Installation and Fitment Note

To avoid premature seal failure, thoroughly inspect the oil pump shaft for any burrs or grooving before installing the new seal. We highly recommend applying a light coating of clean engine oil to the inner sealing lip prior to assembly to prevent a dry start. Please cross-reference your specific engine size and vehicle model year to ensure correct application fitment.

Vehicle Compatibility Table