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 platforms powered by the legendary 5.7-liter Hemi V8 engine. This gasket serves as the primary seal between the coolant outlet housing and the engine block, preventing 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 engine after a performance upgrade, this OEM-quality replacement gasket is essential to maintaining system integrity.

Manufactured by MAHLE ORIGINAL/CLEVITE under part number C31788, this gasket is precision-engineered to exact OEM specifications to ensure a perfect seal under the high pressures and temperatures inherent in modern Hemi engines. The gasket's material composition and thickness are optimized to handle coolant flow rates and thermal cycling without degradation, preventing weeping or catastrophic failure over thousands of miles. MAHLE's reputation for durability in OEM applications guarantees that this component meets or exceeds factory sealing performance, protecting your investment in cooling system reliability.

This gasket is the direct replacement for 2003–2021 model year Hemi 5.7L engines across Dodge Ram trucks, Dodge Charger and Challenger muscle cars, Jeep Grand Cherokee, and other Hemi-equipped platforms. Installation requires removal of the coolant outlet housing—a straightforward job for experienced DIY mechanics or shops with basic hand tools and a cooling system drain. Always pair this gasket with a fresh coolant fill and system flush to prevent sediment buildup and ensure optimal long-term performance. Weighing just 0.035 lbs, this lightweight component makes a world of difference in preventing costly coolant leaks and engine overheating issues.