Cometic C15173-054 MLX Head Gasket LHS for 11-19/12-25 6.4L Hemi (392, SRT)

Vehicle Fitment

• 2012-2014 Chrysler 300 SRT8 (6.4 L Hemi)
• 2011-2019 Dodge Challenger 6.4L / 392 / Scat Pack / SRT8 / R/T 392
• 2012-2019 Dodge Charger 6.4L SRT8 / 392 / R/T Scat Pack
• 2012-2014 Jeep Grand Cherokee SRT8 (6.4L)
• 2014-2019 Ram 2500 / 3500 6.4L 392
• 2018-2019 Dodge Durango SRT 6.4L

Features

• MLX multi-layer steel construction for high-seal durability
• Viton-coated outer layers for heat and corrosion resistance
• Embossed layers enhance sealing under high stress
• Designed for aluminum head to aluminum or cast-iron block
• Resists blowout in high-performance or high-boost applications
• No re-torquing required once installed
• Precision bore matching for consistent compression
• Left-hand side (LHS) orientation for proper head placement

Specifications

• Bore size: 4.150 in
• Compressed thickness: 0.054 in
• Material: 5-layer MLX stainless steel
• Orientation: Left-hand side (LHS) head gasket
• Designed for 6.4 L Hemi (392 / SRT / Apache Gen-3)

Included Components

• 1x Cometic MLX Head Gasket, Part # C15173-054

Product Description

The Cometic C15173-054 MLX Head Gasket is a high-performance, left-side (LHS) gasket designed specifically for Chrysler/Dodge/Jeep/Ram 6.4 L Gen-3 Hemi engines. Built with a robust multi-layer steel (MLX) construction, it provides superior sealing strength under extreme conditions, making it ideal for factory SRT, 392, and performance V8 applications.

Its 5-layer stainless steel design with Viton outer layers ensures excellent thermal resistance, corrosion protection, and blowout prevention. The 4.150-inch bore and 0.054-inch compressed thickness are precision-matched for high-fidelity sealing between the cylinder head and block, maintaining compression even in high-output setups.

Installation is straightforward: this is a direct-fit OEM-style gasket for the left-hand cylinder head, and once torqued to spec, it does not require re-torquing. It's tailored for performance builds, race engines, and high-stress rebuilds where a reliable, high-seal head gasket is essential.