Description
Cometic Gasket MLX Head Gasket
2003–2019 Chrysler/Dodge/Jeep Ram 5.7L Hemi
Part : C15315-040
The Cometic MLX Head Gasket is engineered for high-performance sealing in Chrysler, Dodge, and Jeep Ram vehicles equipped with the 5.7L Hemi engine from 2003 through 2019. Designed to provide superior combustion chamber sealing, this gasket is ideal for enthusiasts and professionals seeking reliable durability and enhanced engine longevity. Its advanced multi-layer stopper (MLX) technology ensures consistent clamp load without increasing bore distortion, making it a trusted choice for both street and performance applications.
Whether you are rebuilding your engine or upgrading for improved reliability, the Cometic MLX gasket delivers a precision fit and robust sealing performance that meets the demanding requirements of the 5.7L Hemi platform.
Key Features
Cometic MLX Head Gaskets incorporate innovative technology and premium materials to deliver exceptional performance and durability:
- Multi-Layer Stopper (MLX) technology integrates a stopper layer for enhanced combustion chamber sealing
- Improved clamp load distribution reduces bore distortion and maintains cylinder integrity
- Constructed from the same high-quality materials as Cometic’s MLS head gaskets
- No sealants or re-torque required, simplifying installation and maintenance
- Precision engineered to fit 4.000 inch bore diameter with .040 inch thickness
- Compatible with a wide range of Chrysler, Dodge, Jeep, and Ram 5.7L Hemi engines from 2003 to 2019
- Designed to withstand high combustion pressures and temperatures for long-lasting reliability
- Ideal for both OEM replacement and performance rebuilds
Construction & Design
The Cometic MLX Head Gasket features a multi-layer steel construction that combines durability with precise sealing capabilities. The integrated stopper layer is engineered to maintain consistent clamp load around the cylinder bore, preventing distortion and ensuring a tight seal under extreme operating conditions. Manufactured from premium-grade materials, this gasket resists warping, corrosion, and combustion gas leakage, providing a dependable seal for high-output 5.7L Hemi engines.
Cometic’s advanced engineering ensures that the gasket maintains its integrity without the need for additional sealants or re-torquing, streamlining installation and reducing the risk of leaks or failures over time.
Installation & Fitment
This gasket is designed for direct fitment on Chrysler 300, Dodge Challenger, Charger, Durango, Magnum, Ram 1500/2500/3500, Jeep Commander, and Jeep Grand Cherokee models equipped with the 5.7L Hemi engine from 2003 to 2019. Installation requires standard head gasket replacement procedures with no special modifications necessary. The gasket’s precise dimensions and durable construction ensure a reliable seal when installed according to manufacturer specifications.
What’s Included
- One Cometic MLX Head Gasket, 4.000 inch bore, .040 inch thickness
Ideal For
This head gasket is ideal for automotive enthusiasts, mechanics, and rebuilders who demand a high-quality, reliable sealing solution for 5.7L Hemi engines. It suits daily drivers, performance builds, and restoration projects requiring OEM-level durability and advanced sealing technology.









