Cometic Gasket MLS Cylinder Head Gasket

2005–2010 Chrysler 300 / 2006–2010 Dodge Charger / 2006–2008 Dodge Magnum / 2006–2010 Jeep Grand Cherokee / 2008–2010 Dodge Challenger - Chrysler 6.1L Gen-3 Hemi

C5890-066

Overview:

The Cometic Gasket MLS (Multi-Layer Steel) Cylinder Head Gasket is engineered to deliver superior sealing performance for high-output engines, specifically designed for Chrysler 6.1L Gen-3 Hemi applications. This gasket is an essential upgrade for enthusiasts and professionals seeking reliable durability and leak-free operation in demanding conditions. It is perfectly suited for a range of vehicles including the Chrysler 300, Dodge Charger, Dodge Magnum, Jeep Grand Cherokee, and Dodge Challenger from model years 2005 through 2010.

Built to withstand the stresses of modern engines, this MLS gasket eliminates the need for additional sealants and provides a robust seal between aluminum heads and either aluminum or cast iron blocks. Its design ensures long-lasting performance, making it ideal for both street and performance applications.

Key Features:

Cometic’s MLS Cylinder Head Gasket incorporates advanced materials and design elements to meet the rigorous demands of high-performance engines. Key features include:

• Multiple embossed layers of stainless steel for enhanced strength and durability
• Outer layers coated with Viton rubber, a heat-resistant elastomer capable of withstanding temperatures up to 250°C (482°F)
• Compressed operating thickness of 0.036 inches for precise sealing
• Embossed outer layers that improve sealing against combustion pressures and prevent leaks
• Center shim layer of uncoated stainless steel, customizable for varied thickness requirements
• Designed to resist corrosion and maintain sealing integrity under thermal cycling and mechanical stress
• Compatible with aluminum-to-aluminum and aluminum-to-cast iron engine configurations
• No need for additional sealants or adhesives during installation
• Specifically engineered for Chrysler 6.1L Gen-3 Hemi engines with a 4.250-inch bore

Construction & Design:

The Cometic MLS Cylinder Head Gasket is constructed from multiple layers of high-grade stainless steel, providing exceptional strength and flexibility. The outer layers are embossed to create a superior sealing surface and coated with Viton, a premium rubber compound known for its excellent heat resistance and chemical durability. This coating ensures a reliable seal even under extreme operating conditions.

The center shim layer is uncoated stainless steel, allowing for precise thickness adjustments to accommodate specific engine tolerances. This multi-layer design enables the gasket to absorb and rebound from the shearing forces generated between dissimilar materials such as aluminum heads and cast iron blocks, preventing gasket failure and maintaining a consistent seal over time.

Installation & Fitment:

This MLS cylinder head gasket is designed for direct fitment on a wide range of Chrysler 6.1L Gen-3 Hemi-powered vehicles. Installation requires standard head gasket replacement procedures and does not necessitate any modifications or additional sealants. Proper torque specifications and surface preparation are critical to ensure optimal sealing performance and longevity.

Compatible vehicles include:

• 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 (2009–2010), 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 (2006–2008), SE (2006–2008), SRT8 (2006–2008), 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 C5890-066

Ideal For:

This gasket is ideal for automotive enthusiasts, professional mechanics, and performance builders who demand a reliable, high-quality sealing solution for Chrysler 6.1L Gen-3 Hemi engines. It is especially suited for those upgrading or maintaining muscle cars, performance sedans, and SUVs that require durable head gaskets capable of handling elevated combustion pressures and thermal cycling.

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.