Cometic Gasket MLS Cylinder Head Gasket

2003–2015 Dodge Ram 1500, 2500, 3500, 2004–2015 Dodge Durango, 2005–2015 Chrysler 300, 2005–2008 Dodge Magnum, 2005–2015 Jeep Grand Cherokee, 2006–2015 Dodge Charger, 2009–2015 Dodge Challenger 5.7L Gen-3 Hemi

Part #: C5750-045

Overview

The Cometic Gasket 5.7L Gen-3 Hemi .045in MLS Cylinder Head Gasket is engineered to provide exceptional sealing performance for Chrysler, Dodge, Jeep, and Ram 5.7L Gen-3 Hemi engines. Designed for high-output applications, this gasket ensures a reliable seal between the cylinder head and engine block, preventing leaks under extreme heat and pressure conditions. It is an ideal choice for engine rebuilders, mechanics, and performance enthusiasts seeking durability and consistent performance without the need for additional sealants.

Built to withstand the demanding thermal cycling and combustion pressures of modern engines, this gasket supports both street and mild performance builds. Its compatibility with aluminum and cast iron engine components makes it a versatile and trusted solution for maintaining engine integrity and longevity.

Key Features

Cometic’s MLS head gasket incorporates advanced materials and design elements to deliver superior sealing and durability:

• Multi-Layer Steel (MLS) construction with multiple embossed stainless steel layers for enhanced strength and flexibility
• Outer layers coated with Viton rubber, a heat-resistant elastomer rated up to 250°C (482°F), providing excellent sealing against combustion gases and coolant leaks
• Compressed operating thickness of 0.036" with a nominal thickness of 0.045" to maintain proper head-to-block clearance
• Compatible with aluminum heads to aluminum blocks and aluminum heads to cast iron blocks, resisting shearing forces between dissimilar metals
• Corrosion-resistant materials extend gasket life and reliability under harsh conditions
• Precision bore size of 4.100" to match factory specifications for the 5.7L Gen-3 Hemi engine
• No additional sealants required, simplifying installation and ensuring consistent sealing performance

Construction & Design

This gasket features a robust multi-layer steel design combining several embossed stainless steel layers to provide exceptional strength and flexibility. The outer layers are coated with Viton, a high-performance rubber compound known for its resistance to heat, chemicals, and wear. This coating ensures a tight seal against combustion pressures and coolant passages, preventing leaks even under demanding operating conditions.

The center shim layer is uncoated stainless steel, allowing for precise thickness control and optimal sealing surface contact. This design accommodates the thermal expansion differences between aluminum heads and cast iron or aluminum blocks, reducing the risk of gasket failure due to material stress and enhancing overall engine durability.

Installation & Fitment

The Cometic MLS Cylinder Head Gasket is a direct factory replacement designed to fit a wide range of 5.7L Gen-3 Hemi engines. Compatible vehicles include:

• 2003–2010 Dodge Ram 1500, 2500, 3500
• 2004–2015 Dodge Durango
• 2005–2015 Chrysler 300 and 300C
• 2005–2008 Dodge Magnum
• 2005–2015 Jeep Grand Cherokee
• 2006–2015 Dodge Charger
• 2009–2015 Dodge Challenger
• 2006–2010 Jeep Commander

Installation follows standard head gasket replacement procedures. No additional sealants are necessary, but it is essential to follow proper torque specifications and head bolt tightening sequences to ensure optimal sealing and gasket longevity.

What's Included

• One Cometic Gasket 5.7L Gen-3 Hemi .045in MLS Cylinder Head Gasket (Left Hand Side)

Ideal For

• Engine rebuilders and mechanics seeking a reliable, high-quality MLS head gasket for 5.7L Gen-3 Hemi engines
• Performance enthusiasts upgrading or maintaining Chrysler, Dodge, Jeep, or Ram vehicles equipped with the 5.7L Gen-3 Hemi
• Owners requiring a durable gasket solution for both street and mild performance applications
• Applications involving aluminum-to-aluminum or aluminum-to-cast iron engine combinations

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.