Cometic Gasket MLS Head Gasket

2011–2019 Chrysler / Dodge / Jeep / Ram 6.4L 392 Hemi Engines

Part #: C5027-070

Overview

The Cometic Gasket MLS (Multi-Layer Steel) Head Gasket is engineered to provide exceptional sealing performance for high-output 6.4L 392 Hemi engines found in a variety of Chrysler, Dodge, Jeep, and Ram vehicles. Designed specifically for demanding applications such as the Dodge Challenger, Charger, Durango, Jeep Grand Cherokee, Chrysler 300, and Ram 2500/3500 models, this gasket delivers reliable durability and optimal engine efficiency.

Ideal for performance enthusiasts, professional mechanics, and engine rebuilders, the Cometic MLS head gasket withstands the rigorous conditions of modern high-performance and heavy-duty engines. Its advanced construction ensures a dependable seal without the need for additional sealants, offering peace of mind and long-lasting reliability during engine rebuilds or upgrades.

Key Features

Cometic’s MLS head gasket incorporates advanced materials and design elements to meet the challenges of high-stress engines:

• Constructed from multiple embossed layers of stainless steel for superior strength and durability
• Outer layers coated with Viton rubber, a heat-resistant elastomer rated up to 250°C (482°F), ensuring excellent sealing under extreme temperatures
• Compressed operating thickness of 0.036" for precise fit and optimal sealing performance
• Designed to accommodate aluminum-to-aluminum and aluminum-to-cast iron engine configurations, resisting shearing forces caused by thermal expansion differences
• Corrosion-resistant materials extend gasket life and maintain seal integrity over time
• No additional sealants required, simplifying installation and reducing potential failure points
• Center shim layer of uncoated stainless steel allows for thickness customization to meet specific engine requirements
• Precision bore size of 4.120" tailored for Chrysler 6.4L Apache Gen-3 Hemi engines

Construction & Design

The Cometic MLS head gasket features a robust multi-layer steel construction, combining several embossed stainless steel layers to provide exceptional strength, flexibility, and sealing capability. The outer layers are coated with Viton, a high-performance rubber compound known for its resistance to heat, chemicals, and wear. This coating ensures a tight seal even under harsh operating conditions and varying surface finishes.

Its design expertly compensates for the differential expansion rates between aluminum cylinder heads and cast iron or aluminum engine blocks, preventing leaks caused by thermal cycling and mechanical stress. The uncoated stainless steel shim layer in the center allows for precise thickness adjustments, ensuring a perfect fit and optimal compression ratio for your engine’s specific needs.

Installation & Fitment

This MLS cylinder head gasket is a direct-fit replacement for Chrysler 6.4L Apache Gen-3 Hemi engines installed in the following vehicles:

• 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 SRT and SRT8 6.4L
• 2012–2014 Chrysler 300 6.4L 392
• 2014–2018 Ram 2500 and Ram 3500 6.4L 392

Installation follows standard head gasket replacement procedures with no modifications or additional sealants required. Proper engine preparation and adherence to torque specifications are essential to ensure optimal sealing and long-term durability. This gasket is suitable for both professional mechanics and experienced DIY installers.

What's Included

• One Cometic MLS Cylinder Head Gasket, Left Hand Side (LHS), coated on both sides with Viton

Ideal For

This head gasket is perfect for performance enthusiasts, professional mechanics, and engine rebuilders seeking a high-quality, reliable sealing solution for Chrysler 6.4L Hemi engines. It is especially suited for vehicles subjected to high stress and heavy-duty use, including SRT models and Ram 2500/3500 trucks, where durability and sealing integrity are critical for maintaining engine performance and longevity.

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.