Cometic Gasket MLS Cylinder Head Gasket

2011–2019 Dodge Challenger, 2012–2019 Dodge Charger, 2018–2019 Dodge Durango, 2012–2019 Jeep Grand Cherokee, 2012–2014 Chrysler 300, 2014–2018 Ram 2500 & 3500 6.4L 392 HEMI

Part #: C5027-075

Overview

The Cometic MLS (Multi-Layer Steel) Cylinder Head Gasket is engineered specifically for the Chrysler 6.4L Apache Gen-3 HEMI engine, delivering exceptional sealing performance and durability. Designed to meet the rigorous demands of high-output engines found in Dodge, Jeep, Chrysler, and Ram vehicles, this gasket ensures a reliable, leak-free seal without the need for additional sealants.

Whether you are rebuilding, upgrading, or maintaining your 6.4L 392 HEMI engine, the Cometic MLS gasket provides a precision fit and robust construction that withstands extreme thermal cycling and metal expansion. It is an essential component for enthusiasts and professional mechanics seeking to preserve engine integrity under high stress and performance conditions.

Key Features

Cometic’s MLS Cylinder Head Gasket incorporates advanced materials and design elements to deliver superior sealing and longevity for modern performance engines:

• Multiple embossed layers of high-grade stainless steel for enhanced strength and durability
• Outer layers coated with Viton rubber for exceptional heat resistance up to 250°C (482°F)
• Compressed operating thickness of 0.036" for precise and consistent sealing
• Center shim layer of uncoated stainless steel allows for customizable thickness to match engine tolerances
• Engineered to withstand shearing forces between aluminum heads and cast iron or aluminum blocks
• Corrosion-resistant materials ensure long-term reliability and performance
• No additional sealants required, simplifying installation and reducing potential failure points
• Specifically designed for the Chrysler 6.4L Apache Gen-3 HEMI engine with a 4.120" bore

Construction & Design

The Cometic MLS gasket is constructed from multiple layers of premium stainless steel, each embossed to improve sealing capability and durability. The outer layers are coated with Viton, a high-performance fluoroelastomer rubber known for its outstanding resistance to heat, chemicals, and wear. This coating ensures a tight, reliable seal even under extreme operating temperatures and conditions.

The uncoated stainless steel center shim provides structural integrity and allows for precise thickness adjustments to accommodate engine-specific tolerances. This multi-layer design enables the gasket to flex and rebound during thermal cycling, maintaining a consistent seal and preventing leaks caused by metal expansion and contraction.

Installation & Fitment

This MLS cylinder head gasket is a direct fit replacement for a wide range of vehicles equipped with the Chrysler 6.4L Apache Gen-3 HEMI engine. Compatible models include:

• 2011–2019 Dodge Challenger 6.4L 392
• 2012–2019 Dodge Charger 6.4L 392
• 2018–2019 Dodge Durango 6.4L 392
• 2012–2019 Jeep Grand Cherokee 6.4L SRT
• 2012–2014 Chrysler 300 6.4L 392
• 2014–2018 Ram 2500 6.4L 392
• 2014–2018 Ram 3500 6.4L 392

Installation follows standard head gasket replacement procedures. No additional sealants are required, which simplifies the process and reduces the risk of improper sealing. For optimal performance and longevity, proper torque specifications and thorough engine surface preparation are essential.

What's Included

• One Cometic MLS Cylinder Head Gasket (Left Hand Side) for Chrysler 6.4L Apache Gen-3 HEMI

Ideal For

This gasket is ideal for performance enthusiasts, professional mechanics, and anyone rebuilding or upgrading engines in compatible Chrysler, Dodge, Jeep, and Ram vehicles. It is especially suited for high-output applications where reliable sealing under extreme conditions is critical. Whether used in street, track, or heavy-duty applications, the Cometic MLS gasket provides the durability and performance needed to maintain engine integrity and prevent costly leaks.

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.