Cometic Gasket MLS Head Gasket

2005–2010 Chrysler 300C, 2006–2010 Dodge Charger, 2008–2010 Dodge Challenger, 2006–2008 Dodge Magnum, 2006–2010 Jeep Grand Cherokee 6.1L HEMI

Part #: C5876-030

Overview

The Cometic MLS Head Gasket is a premium multi-layer steel gasket engineered specifically for the demanding 6.1L Gen-3 HEMI engines used in select Chrysler, Dodge, and Jeep vehicles from 2005 to 2010. Designed to provide a reliable, leak-free seal, this gasket is ideal for high-performance applications, engine rebuilds, and repairs where durability and precision are critical. It offers a dependable sealing solution that maintains engine integrity without the need for additional sealants, making it suitable for both professional mechanics and automotive enthusiasts.

Built to handle the unique challenges of sealing between aluminum cylinder heads and iron or aluminum blocks, the Cometic MLS gasket ensures consistent performance under extreme heat and pressure. This gasket is a direct replacement part that meets or exceeds OEM specifications, making it a trusted choice for maintaining or upgrading your vehicle’s engine sealing system.

Key Features

Cometic’s MLS Head Gasket incorporates advanced materials and design features to maximize sealing performance and engine longevity:

• Multi-Layer Steel (MLS) construction for superior strength and durability
• Embossed outer layers coated with Viton rubber for excellent heat, oil, and chemical resistance
• Compressed operating thickness of 0.098" for precise and consistent sealing
• Designed to withstand shearing forces between aluminum heads and cast iron or aluminum blocks
• Corrosion-resistant stainless steel layers maintain a tight seal under thermal cycling
• Center shim layer of uncoated stainless steel allows for thickness customization
• Heat resistance up to 250°C (482°F) due to Viton coating
• No additional sealants required, simplifying installation and reducing failure points
• Specifically engineered for Chrysler 6.1L Gen-3 HEMI engines with a 4.100" bore

Construction & Design

The Cometic MLS Head Gasket features a sophisticated multi-layer steel design composed of several embossed stainless steel layers. The outer layers are coated with Viton, a high-performance fluoroelastomer known for its exceptional resistance to heat, oil, and chemicals. This ensures long-lasting sealing integrity even in harsh engine environments. The center shim layer is made from uncoated stainless steel, allowing for precise thickness adjustments to meet specific engine requirements.

This layered construction effectively compensates for the different expansion rates of aluminum cylinder heads and cast iron or aluminum blocks, preventing leaks and gasket failure under extreme operating conditions. The gasket’s corrosion-resistant stainless steel layers maintain a tight seal through thermal cycling, making it ideal for high-output and performance engines.

Installation & Fitment

This gasket is a direct fit replacement for the following vehicles equipped with the 6.1L Gen-3 HEMI engine:

• Chrysler 300 Base (2005–2007), 300 C (2005–2010), 300 C SRT8 (2005–2010), 300 Limited (2005–2010), 300 LX (2008–2009), 300 S (2010), 300 Signature Series (2009), 300 Touring (2005–2010)
• Dodge Challenger R/T, SE (2009–2010), SRT8 (2008–2010)
• Dodge Charger Base (2006–2007), Daytona R/T (2006), Pursuit (2006–2010), R/T, SE, SRT8, SXT (2006–2010)
• Dodge Magnum R/T, SE, SRT8, SXT (2006–2008)
• Jeep Grand Cherokee 65th Anniversary Edition (2006), Laredo (2006), Limited, Overland, SRT8 (2006–2010)

Installation follows standard cylinder head gasket replacement procedures. No additional sealants are necessary, which reduces installation complexity and potential failure points. Proper torque specifications and engine preparation guidelines should be followed to ensure optimal sealing performance and longevity.

What's Included

• One Cometic MLS Cylinder Head Gasket (Part # C5876-030)

Ideal For

This MLS head gasket is ideal for automotive enthusiasts, professional mechanics, and anyone performing engine rebuilds or repairs on compatible Chrysler, Dodge, and Jeep vehicles equipped with the 6.1L HEMI engine. It is especially suited for high-performance or high-output engines where reliable sealing under extreme conditions is essential. Whether upgrading from a stock gasket or replacing a worn or damaged unit, this gasket delivers long-lasting durability and peace of mind.

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.