Cometic Gasket MLS Cylinder Head Gasket

2003–2015 Chrysler, Dodge, Jeep, Ram 5.7L Gen-3 Hemi

Part #: C5749-045

Overview

The Cometic Gasket MLS Cylinder Head Gasket is a premium sealing solution engineered specifically for Chrysler 5.7L Gen-3 Hemi engines found in a wide range of Dodge, Jeep, Ram, and Chrysler vehicles from 2003 through 2015. This multi-layer steel (MLS) gasket is designed to provide a reliable, leak-free seal between the cylinder head and engine block, even under high-performance and demanding driving conditions.

Ideal for enthusiasts, professional mechanics, and engine builders, this gasket ensures durability and precision without the need for additional sealants. It is perfectly suited for both aluminum-to-aluminum and aluminum-to-cast iron applications, making it a versatile upgrade or replacement part for muscle cars, trucks, and SUVs equipped with the 5.7L Hemi engine.

Key Features

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

• Multi-Layer Steel (MLS) construction for superior strength and long-lasting durability
• Embossed outer layers coated with Viton rubber for exceptional heat, oil, and chemical resistance
• Compressed operating thickness of 0.098 inches for precise and consistent sealing
• Corrosion-resistant stainless steel layers that maintain a tight seal by rebounding under stress
• Designed to withstand shearing forces between aluminum cylinder heads and cast iron engine blocks
• No sealants required, simplifying installation and reducing potential failure points
• Heat resistance up to 250°C (482°F) due to Viton coating
• Compatible with a broad range of Chrysler, Dodge, Jeep, and Ram models from 2003 to 2015

Construction & Design

This gasket features multiple embossed layers of high-grade stainless steel, providing exceptional strength and flexibility to maintain a reliable seal under extreme conditions. The outer layers are coated with Viton, a high-performance fluorocarbon elastomer known for its outstanding resistance to heat, oils, and chemicals, ensuring durability and longevity.

The center shim layer is made of uncoated stainless steel, allowing for precise thickness control to meet exact engine specifications. The MLS design effectively compensates for the differing thermal expansion rates between aluminum heads and cast iron blocks, preventing leaks and enhancing engine reliability over time.

Installation & Fitment

The Cometic MLS Cylinder Head Gasket is designed for direct fitment on the right-hand side (RHS) of the 5.7L Gen-3 Hemi engine in a wide variety of vehicles. Compatible models include Dodge Ram 1500, 2500, and 3500 (2003–2015), Dodge Durango (2004–2015), Chrysler 300 (2005–2015), Dodge Magnum (2005–2008), Jeep Grand Cherokee (2005–2015), Dodge Charger (2006–2015), Dodge Challenger (2009–2015), and Jeep Commander (2006–2010).

Installation follows standard cylinder head gasket replacement procedures. No additional sealants are necessary, which reduces installation time and minimizes the risk of improper sealing. For best results, always adhere to manufacturer torque specifications and engine rebuild best practices.

What's Included

• One Cometic MLS Cylinder Head Gasket, Right-Hand Side (RHS)

Ideal For

This gasket is perfect for automotive enthusiasts, professional mechanics, and engine builders who demand reliable, high-quality sealing for Chrysler 5.7L Gen-3 Hemi engines. Whether rebuilding, upgrading, or maintaining muscle cars, trucks, or SUVs, this gasket delivers the durability and precision required for both daily driving and high-performance applications.

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.