4.120 MLS Head Gasket LH .051 6.4L Gen III Hemi

The 4.120 MLS Head Gasket LH .051 6.4L Gen III Hemi is designed for builders and mechanics working on high-performance Dodge and Jeep applications utilizing the 6.4L Hemi engine. This gasket is crucial for sealing between the cylinder head and engine block, effectively preventing combustion leakage and coolant bypass under extreme conditions.

Constructed from Multi-Layer Steel (MLS), this head gasket features a .051-inch thickness tailored to the Gen III Hemi's specifications. The 4.120 bore diameter ensures complete coverage of the combustion chamber, which is essential for optimal engine performance and preventing issues like hot spots or blow-by. MLS gaskets are known for their superior reusability and thermal conductivity, making them ideal for both naturally aspirated and forced induction applications.

This left-side gasket is vital for any head gasket replacement in 6.4L engines found in the Dodge Charger, Challenger, Magnum, and Jeep Grand Cherokee models from 2009 onward. Proper installation is critical, requiring careful torque sequencing to ensure reliability and longevity in high-performance builds.