Water Pump Gasket 05-21 Hemi 5.7L

The Water Pump Gasket 05-21 Hemi 5.7L is a critical engine seal engineered for Dodge, Jeep, and Ram vehicles equipped with the legendary Gen III Hemi platform. This genuine MAHLE ORIGINAL/CLEVITE gasket prevents coolant leaks at the water pump mounting surface, a high-pressure interface that demands precision engineering and material durability. Whether you're rebuilding a worn water pump assembly, replacing a failed gasket after overheating, or restoring an aging 5.7L Hemi, this OEM-equivalent seal ensures a factory-tight fit and reliable cooling system performance.

Manufactured from high-grade rubber compound in distinctive orange, this 0.319-inch-thick gasket is specifically formulated for the thermal cycling and pressure demands of the Mopar Gen III Hemi architecture. The material composition resists coolant degradation, maintains elasticity across engine operating temperatures, and compresses uniformly across the pump body to create a consistent seal. MAHLE ORIGINAL's precision tolerancing ensures that surface contact pressure is evenly distributed, eliminating the pinch points and micro-leaks that plague inferior aftermarket alternatives and preventing catastrophic coolant loss that can lead to head gasket failure or engine seizure.

Serious Hemi builders and shade-tree mechanics alike trust this gasket for water pump replacement on 2005–2021 5.7L applications, including the LY6 platform found in trucks, SUVs, and performance vehicles. Installation is straightforward: drain coolant, remove the pump, clean both mounting surfaces thoroughly, and seat the gasket dry before torquing bolts to factory spec in a star pattern. A single gasket per pump is supplied; verify your exact Hemi variant and pump design before ordering to ensure proper fit and avoid potential installation delays.