Cometic Gasket MLS Cylinder 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 Gen-3 Hemi

Part #: C5890-080

Overview

The Cometic Gasket MLS Cylinder Head Gasket is a premium sealing solution engineered specifically for Chrysler, Dodge, and Jeep vehicles equipped with the 6.1L Gen-3 Hemi engine. Designed to meet the demands of high-output engines, this multi-layer steel (MLS) gasket ensures a reliable, leak-free seal under extreme thermal and mechanical stresses. It is ideal for performance enthusiasts, professional mechanics, and anyone performing engine rebuilds or upgrades who require durability and precision.

By eliminating the need for additional sealants, the Cometic MLS gasket simplifies installation while maintaining superior sealing integrity. Its robust construction accommodates the different expansion rates between aluminum cylinder heads and aluminum or cast iron engine blocks, preventing common head gasket failures and preserving engine performance.

Key Features

Cometic’s MLS Cylinder Head Gasket incorporates advanced materials and design elements to deliver exceptional durability and performance:

• Multiple embossed layers of stainless steel for enhanced strength and flexibility
• Outer layers coated with Viton rubber for superior heat resistance and chemical stability
• Compressed operating thickness of 0.036 inches for precise and consistent fitment
• Engineered to handle shearing forces between aluminum heads and cast iron or aluminum blocks
• Corrosion-resistant construction extends gasket life and reliability
• Center shim layer of uncoated stainless steel allows for customizable thickness adjustments
• Heat resistance up to 250°C (482°F) thanks to Viton coating
• Compatible with both factory and high-performance engines without requiring sealants
• Specifically designed for Chrysler 6.1L Gen-3 Hemi engines with a 4.250-inch bore

Construction & Design

The Cometic MLS Cylinder Head Gasket features a sophisticated multi-layer steel construction that combines multiple embossed stainless steel layers to provide exceptional strength, flexibility, and sealing capability. The outer layers are coated with Viton, a high-performance fluoroelastomer known for its excellent heat resistance and chemical stability, ensuring a reliable seal even under extreme thermal cycling and mechanical stress.

The gasket’s center shim layer is made from uncoated stainless steel, allowing for precise thickness customization to meet specific engine requirements. This design effectively compensates for the differential expansion rates between aluminum cylinder heads and either aluminum or cast iron blocks, minimizing the risk of leaks and maintaining optimal compression throughout the engine’s operating range.

Installation & Fitment

This MLS head gasket is designed as a direct replacement for compatible Chrysler, Dodge, and Jeep models equipped with the 6.1L Gen-3 Hemi engine. Installation requires no modifications or additional sealants, making it suitable for both professional mechanics and experienced enthusiasts. To ensure maximum performance and longevity, it is important to follow proper torque specifications and installation procedures as outlined by the vehicle manufacturer.

Fitment includes the following models:

• 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 (2006–2010), SE (2006–2010), SRT8 (2006–2010), SXT (2006–2010)
• Dodge Magnum R/T, SE, SRT8, SXT (2006–2008)
• Jeep Grand Cherokee 65th Anniversary Edition (2006), Laredo (2006–2010), Limited (2006–2010), Overland (2006–2009), SRT8 (2006–2010)

What's Included

• One Cometic MLS Cylinder Head Gasket (Part Number C5890-080)

Ideal For

This gasket is ideal for performance enthusiasts, professional mechanics, and anyone performing engine rebuilds or upgrades on Chrysler 6.1L Gen-3 Hemi-powered vehicles. It is especially suited for applications requiring a durable, leak-resistant head gasket capable of handling high cylinder pressures and thermal cycling without compromise. Whether you are restoring a factory engine or building a high-performance powerplant, the Cometic MLS gasket delivers reliable sealing and long-lasting 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.