RH Head Gasket 03-21 Hemi 5.7L

The RH Head 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 V8 engine. As a mechanic, you know that head gaskets are the unsung heroes preventing catastrophic coolant and oil cross-contamination—a failure that can turn a $200 repair into a $5,000+ engine rebuild. This right-side gasket from MAHLE ORIGINAL/CLEVITE is the OEM-equivalent solution for enthusiasts and technicians tackling cylinder head removal, valve jobs, or addressing persistent overheating issues on platforms spanning 2003 through 2021 model years.

MAHLE ORIGINAL manufactures this gasket using advanced multi-layer steel (MLS) construction, which provides superior compression set and heat resistance compared to traditional composite designs. The precision-engineered sealing surfaces ensure a perfect match to both the cylinder head and engine block deck, eliminating the micro-gaps that lead to blown gaskets under boost or high-revving conditions. At just 0.72 pounds and measuring 8.85 x 0.3 x 23.15 inches, this gasket is compact yet robust enough to withstand the Hemi's high compression ratio and aggressive combustion chamber dynamics—a key reason why OEM manufacturers specify this exact design for factory assembly and warranty repairs.

Whether you're rebuilding a 5.7L after a track day or replacing a fatigued gasket on a high-mileage truck, this right-side head gasket pairs seamlessly with its left-side counterpart to complete a proper two-gasket installation. Professional mechanics trust MAHLE for longevity and reliability; pairing it with fresh coolant, proper deck surface finishing, and correct torque sequences ensures that your Hemi will seal tight for another 100,000+ miles. Installation requires the standard cylinder head removal procedure—always replace both gaskets as a matched set and verify that your block and head surfaces meet OEM flatness specifications before reassembly.