Thermostat Housing Gasket 14-20 Hemi 6.4L

The Thermostat Housing Gasket 14-20 Hemi 6.4L is an essential OEM-specification replacement component for Dodge and Ram trucks equipped with the legendary 6.4L Hemi V8 engine. This gasket seals the critical interface between the engine block and thermostat housing, preventing coolant leaks that can lead to overheating, air pockets in the cooling system, and catastrophic engine damage. Whether you're performing routine maintenance, addressing an existing leak, or rebuilding your cooling system after a head gasket failure, this MAHLE ORIGINAL gasket delivers the reliability you need for street cruising or heavy-duty towing applications.

Manufactured by MAHLE ORIGINAL/CLEVITE, a trusted name in OEM engine sealing solutions, this thermostat housing gasket is engineered to precise factory specifications and materials that ensure proper compression, thermal stability, and longevity. The gasket's composite construction resists coolant degradation and maintains its seal integrity across the full operating temperature range of the 6.4L Hemi, from cold starts to sustained high-load driving conditions. Its lightweight design—just 0.025 lbs—reflects the minimal material required for maximum sealing efficiency, with compact dimensions of 4.9 x 0.65 x 7.3 inches that fit the exact housing profile on 2014–2020 Hemi engines.

This replacement gasket is ideal for owners and mechanics servicing late-model Dodge Chargers, Challengers, Durangos, and Ram 1500/2500 trucks with the Gen III 6.4L Hemi platform. Installation is straightforward: remove the thermostat housing bolts, clean the mating surfaces thoroughly to remove old gasket material and corrosion, install the new MAHLE gasket, and torque the housing back in place. Using an OEM-spec gasket rather than aftermarket alternatives ensures proper coolant circulation, eliminates repeat failures, and maintains your warranty on critical engine components—a smart investment for any Hemi enthusiast serious about reliability.