Coolant Outlet Gasket 03-21 Hemi 5.7L

The Coolant Outlet Gasket 03-21 Hemi 5.7L is a critical sealing component engineered for Dodge, Jeep, and Ram vehicles equipped with the legendary 5.7-liter HEMI engine. This gasket seals the coolant outlet housing where the thermostat coolant passage meets the engine block, preventing high-pressure coolant leaks that can compromise engine temperature regulation and lead to overheating. Whether you're performing routine maintenance, addressing a cooling system leak, or rebuilding your HEMI after years of hard use, this OEM-quality replacement gasket is essential for reliable operation.

Manufactured by MAHLE ORIGINAL/CLEVITE, a trusted supplier of OEM cooling system components, this gasket is engineered from premium elastomer and composite materials formulated to withstand the thermal cycling and pressure cycles inherent to modern HEMI powerplants. The gasket's precision-molded design ensures a perfect seal at the outlet housing interface, where temperatures regularly exceed 200°F and coolant pressure reaches 15+ PSI under normal operating conditions. Its compact profile—measuring 4.9 x 0.45 x 6.95 inches—fits precisely into the outlet housing without modification, and the lightweight construction (0.035 lbs) adds zero parasitic weight to your cooling system.

This coolant outlet gasket is ideal for HEMI owners and professional mechanics tackling cooling system repairs on 2003–2021 model-year Dodge Charger, Challenger, Magnum, Ram trucks, and Jeep Grand Cherokee vehicles. Installation requires draining a small amount of coolant and removing the outlet housing—a straightforward 20-minute job that pays dividends in cooling system reliability. Pair this gasket with fresh coolant and you've eliminated a common source of slow leaks that often go undiagnosed until they become catastrophic overheating events.