Cometic Gasket MLS Head Gasket

2003–2015 Dodge Ram 1500, Ram 2500, Ram 3500, Jeep Grand Cherokee, Dodge Durango, Dodge Charger, Dodge Challenger, Chrysler 300, Jeep Commander, Dodge Magnum 5.7L HEMI

Part #: C5749-089

Overview

The Cometic Gasket MLS Head Gasket is a premium multi-layer steel (MLS) gasket engineered for Dodge and Jeep vehicles equipped with the 5.7L HEMI engine from 2003 through 2015. Designed to provide a durable, leak-free seal between the cylinder head and engine block, this gasket is ideal for high-output and performance applications. Whether you are rebuilding your engine or upgrading for enhanced reliability, the Cometic MLS gasket offers a precision fit and long-lasting sealing performance without the need for additional sealants.

Built to withstand the demanding conditions of modern engines, this gasket ensures consistent sealing integrity under thermal cycling and mechanical stress, making it a trusted choice for enthusiasts and professional engine builders alike.

Key Features

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

• Multi-layer steel construction for superior strength and durability
• Embossed outer layers coated with Viton rubber for excellent heat, oil, and chemical resistance
• Compressed operating thickness of 0.036" for precise and reliable sealing
• Compatible with aluminum cylinder heads mated to aluminum or cast iron engine blocks
• Resists corrosion and shearing forces caused by dissimilar metal expansion
• No sealants required, simplifying installation and ensuring consistent performance
• Designed to withstand operating temperatures up to 250°C (482°F)
• Center shim layer of uncoated stainless steel allows for customizable thickness and enhanced strength

Construction & Design

This head gasket features a robust multi-layer steel design composed of multiple embossed stainless steel layers. The outer layers are coated with Viton rubber, a high-performance elastomer known for its exceptional resistance to heat, oils, and chemicals. This coating enhances the gasket’s ability to maintain a tight seal under varying load conditions and surface finishes.

The center shim layer is made from uncoated stainless steel, allowing for precise thickness adjustments to meet specific engine requirements. This multi-layer construction provides flexibility and resilience, enabling the gasket to rebound and maintain sealing integrity despite thermal expansion and mechanical stresses common in high-performance and heavy-duty engines.

Installation & Fitment

The Cometic MLS Head Gasket is designed for direct replacement on a wide range of Dodge, Jeep, and Chrysler vehicles equipped with the 5.7L HEMI engine from 2003 to 2015. It fits models including the Ram 1500, 2500, 3500, Jeep Grand Cherokee, Dodge Durango, Charger, Challenger, Chrysler 300, Jeep Commander, and Dodge Magnum.

Installation follows standard head gasket replacement procedures without requiring any modifications or additional sealants. Its precision engineering ensures a reliable, leak-free seal that enhances engine longevity and performance.

What's Included

• One Cometic MLS Head Gasket, 4.100" bore, .089" compressed thickness

Ideal For

This gasket is perfect for performance enthusiasts, professional engine builders, and anyone performing an engine rebuild or upgrade on Dodge, Jeep, or Chrysler vehicles with the 5.7L HEMI engine. It is especially suited for applications demanding enhanced durability and reliable sealing in high-output, modified, or heavy-duty engines.

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.