Timing Cover Seal 03-21 Hemi 5.7L

The Timing Cover Seal 03-21 Hemi 5.7L is a critical gasket component engineered to seal the timing cover assembly on third and fourth-generation Dodge Hemi engines. This OEM-quality seal prevents oil seepage at the front of the engine block, where the timing cover interfaces with the cylinder head and crankcase. Mechanics and enthusiasts working on 2003–2021 Dodge trucks, Challengers, Chargers, and Jeeps rely on this seal to maintain engine integrity during both stock and modified builds.

Manufactured by MAHLE ORIGINAL under the CLEVITE line—a trusted OEM and aftermarket gasket supplier—this timing cover seal uses high-temperature elastomer compounds that resist oil breakdown and thermal cycling common in the Hemi 5.7L platform. The seal's geometry is precisely molded to match factory tolerances, ensuring a tight fit against the timing cover bore without over-compression that can cause premature failure. At just 0.145 lbs and measuring 6 × 0.13 × 16 inches, it installs directly into the existing timing cover pocket with no modifications required.

Whether you're performing routine engine maintenance, rebuilding after a timing chain service, or freshening a high-mileage block before performance upgrades, the Timing Cover Seal 03-21 Hemi 5.7L is essential to prevent chronic oil leaks that drain coolant passages and contaminate underhood components. Installation is straightforward during timing cover removal; most technicians recommend replacing the seal whenever the cover is disturbed to avoid repeat teardowns. This part is compatible with all Hemi 5.7L variants across truck and muscle car platforms manufactured between 2003 and 2021.