Head Bolt Set 03-21 Hemi 5.7L

The Head Bolt Set 03-21 Hemi 5.7L by MAHLE ORIGINAL/CLEVITE delivers OEM-specification fasteners engineered for the legendary Dodge Hemi platform. Whether you're performing routine cylinder head maintenance, rebuilding after high-mileage wear, or tackling a full engine refresh, this bolt set ensures proper clamping force and head gasket sealing across all 16 bolt positions. As a Hemi enthusiast, you know that factory-grade head bolts are non-negotiable—they're the foundation of compression integrity and long-term reliability on engines that regularly see 350+ horsepower.

MAHLE ORIGINAL/CLEVITE fasteners are manufactured to exacting tolerances and material specifications that match OEM requirements for 5.7L Hemi applications. These bolts feature precise thread geometry and controlled yield strength, critical for achieving the correct torque-to-yield sequence that modern Hemi cylinder heads demand. The set's engineering accounts for the unique clamping loads of the aluminum 5.7L head design, preventing gasket blow-out and cylinder leakage even under sustained boost or high-RPM operation. Proper head bolt installation with calibrated torque wrench and factory torque sequence is essential for this platform—under-torquing risks gasket failure, while over-torquing can strip threads or cause warping.

This head bolt set is ideal for Dodge Ram trucks, Chargers, Challengers, and other vehicles equipped with the 5.7L Hemi V8 spanning model years 2003 through 2021. Mechanics and DIY builders working on engine rebuilds, head gasket replacement, or performance upgrades should always use factory-specification fasteners rather than reusing old bolts—head bolts are torque-to-yield components and lose preload after initial installation. Always consult your vehicle's service manual for the correct torque sequence and values specific to your model year, as specifications may vary slightly across the production run.