Cometic Gasket MLS Head Gasket

2011–2024 Dodge 6.4L 392 HEMI

Part #: C15172-044

Overview

The Cometic MLS Head Gasket with a 4.150" bore and .044" thickness is engineered specifically for the Dodge 6.4L 392 HEMI engines from 2011 through 2024. Designed to meet the demands of high-output performance engines, this multi-layer steel (MLS) gasket ensures superior sealing reliability without the need for additional sealants. Whether you are rebuilding or upgrading your HEMI engine, this gasket provides the durability and precision required to maintain optimal engine performance and longevity.

Ideal for enthusiasts and professional engine builders alike, the Cometic MLS gasket is built to withstand the extreme conditions found in modern high-performance applications, including the thermal and mechanical stresses of aluminum-to-aluminum or aluminum-to-cast iron engine assemblies.

Key Features

Cometic MLS Head Gaskets incorporate advanced materials and design features to deliver exceptional sealing performance and durability:

• Multi-layer steel construction for enhanced strength and flexibility
• Embossed outer layers coated with heat-resistant Viton rubber for superior sealing
• Compressed operating thickness of 0.098" for precise fit and sealing
• Designed to handle the shearing forces between aluminum heads and blocks or cast iron blocks
• Corrosion-resistant stainless steel layers for long-lasting durability
• Center shim layer of uncoated stainless steel to accommodate thickness variations
• Viton coating rated to withstand temperatures up to 250°C (482°F)
• No additional sealants required, simplifying installation and reducing potential failure points

Construction & Design

The Cometic MLS Head Gasket is constructed from multiple embossed layers of high-grade stainless steel, providing a robust yet flexible sealing surface. The outer layers are coated with Viton, a fluorocarbon elastomer known for its excellent heat resistance and chemical stability, ensuring a reliable seal under extreme thermal and mechanical loads. The embossed design enhances gasket sealing by allowing controlled compression and rebound, which compensates for surface irregularities and thermal expansion differences between engine components.

The center shim layer is uncoated stainless steel, carefully engineered to maintain consistent gasket thickness and accommodate the specific bore size and thickness requirements of the 6.4L 392 HEMI engine. This multi-layer approach results in a gasket that resists corrosion, maintains integrity under high cylinder pressures, and adapts to the dynamic environment of modern performance engines.

Installation & Fitment

This MLS head gasket is a direct fit replacement for Dodge 6.4L 392 HEMI engines from model years 2011 through 2024. It is designed for use with both aluminum cylinder heads and blocks, as well as aluminum heads on cast iron blocks, making it versatile for various engine rebuilds or upgrades. Installation requires standard head gasket replacement procedures, with no need for additional sealants or special treatments, simplifying the process and ensuring consistent results.

Proper surface preparation and torque specifications should be followed to maximize sealing performance and longevity. This gasket is engineered to handle the factory and aftermarket performance levels typical of the 6.4L HEMI platform.

What's Included

• One Cometic MLS Head Gasket, 4.150" bore, .044" thickness

Ideal For

This head gasket is ideal for performance enthusiasts, professional engine builders, and mechanics working on Dodge 6.4L 392 HEMI engines from 2011 to 2024. It is especially suited for those seeking a reliable, high-quality gasket solution that can withstand increased cylinder pressures and thermal cycling associated with high-output and modified engines. Whether for street performance, racing, or heavy-duty applications, this gasket delivers dependable sealing and durability.

Cometic Gasket supplies high-performance sealing solutions for motorsports and high-stress engine builds, with a strong focus on modern gasket materials like multi-layer steel (MLS) head gaskets. Their catalog spans head gaskets and complete gasket sets across a wide range of applications, helping builders maintain reliable combustion and fluid sealing under extreme pressure and heat.