Cometic Gasket MLS Head Gasket

2003–2015 Dodge / Chrysler / Jeep / Ram 5.7L Hemi

Part #: C5749-027

Overview

The Cometic Gasket MLS Head Gasket is a premium multi-layer steel gasket engineered to provide exceptional sealing performance for a broad range of Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 5.7L Hemi engine. Designed to fit model years 2003 through 2015, this gasket ensures reliable durability and maintains optimal engine compression under high-stress conditions.

Ideal for both professional mechanics and automotive enthusiasts, this head gasket offers a robust seal between the cylinder head and engine block, preventing leaks and ensuring consistent engine performance. Whether you are restoring a stock engine or upgrading for enhanced power, the Cometic MLS Head Gasket delivers dependable sealing without the need for additional sealants.

Key Features

Cometic’s MLS Head Gasket incorporates advanced materials and design to meet the demanding requirements of modern high-output engines:

• Multi-layer steel construction for superior strength and long-lasting durability
• Outer layers embossed and coated with Viton rubber for excellent heat resistance and sealing
• Precise compressed operating thickness of 0.098 inches for accurate fitment
• Compatible with aluminum heads to aluminum blocks and aluminum heads to cast iron blocks
• Corrosion resistant and engineered to withstand shearing forces between dissimilar metals
• Center shim layer of uncoated stainless steel allows for customizable thickness adjustments
• Heat resistance up to 250°C (482°F) thanks to Viton coating
• No sealants required, simplifying installation and reducing potential failure points
• Designed to maintain a reliable seal in high-output and high-stress engine environments

Construction & Design

The Cometic MLS Head Gasket is meticulously crafted from multiple embossed layers of stainless steel, providing exceptional strength and flexibility to endure extreme engine conditions. The outer layers are coated with Viton, a high-performance fluorocarbon elastomer known for its outstanding heat resistance and chemical stability. This ensures a tight, durable seal even under intense thermal and mechanical stress.

Its design accommodates the natural expansion and contraction differences between aluminum cylinder heads and cast iron or aluminum engine blocks, effectively preventing leaks caused by shearing forces. The uncoated stainless steel shim layer in the center allows for precise thickness customization, ensuring a perfect fit across various engine configurations and rebuilds.

Installation & Fitment

This MLS head gasket is engineered for direct fitment on a wide range of vehicles equipped with the 5.7L Hemi engine, including:

• 2003–2010 and 2011–2015 Dodge Ram 1500, 2500, and 3500
• 2004–2015 Dodge Durango
• 2005–2015 Jeep Grand Cherokee
• 2006–2015 Dodge Charger
• 2009–2015 Dodge Challenger
• 2005–2015 Chrysler 300
• 2006–2010 Jeep Commander
• 2005–2008 Dodge Magnum

Installation follows standard head gasket replacement procedures. The gasket’s design eliminates the need for additional sealants, simplifying the installation process and minimizing the risk of improper sealing. For best results, it is recommended to follow manufacturer torque specifications and engine rebuild best practices to ensure optimal performance and longevity.

What's Included

• One Cometic MLS Head Gasket (Part Number C5749-027)

Ideal For

This head gasket is perfect for vehicle owners and mechanics seeking a reliable, high-quality replacement for factory head gaskets in Chrysler, Dodge, Jeep, and Ram vehicles with the 5.7L Hemi engine. It is especially suited for those running high-output or performance engines that demand a gasket capable of withstanding elevated temperatures and pressures without failure. Whether restoring a stock engine or upgrading for enhanced performance, the Cometic MLS Head Gasket offers peace of mind with its durable construction and proven sealing technology.

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.