Cometic Gasket MLS Cylinder Head Gasket

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

Part #: C5468-120

Overview

The Cometic Gasket 5.7L Gen-3 Hemi .120in MLS Cylinder Head Gasket is a premium replacement designed to deliver superior sealing performance for a broad range of Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 5.7L Gen-3 Hemi engine. Engineered for both professional mechanics and automotive enthusiasts, this multi-layer steel (MLS) gasket ensures reliable durability and optimal engine compression under demanding conditions.

Whether you are performing an engine rebuild, maintenance, or performance upgrades, this gasket provides a dependable solution to prevent leaks and maintain engine integrity. Its robust construction and advanced sealing technology make it ideal for OEM replacement and moderate performance applications across popular trucks, SUVs, and muscle cars from 2003 through 2015.

Key Features

Cometic’s MLS Cylinder Head Gasket incorporates advanced materials and design elements to meet the rigorous demands of modern 5.7L Gen-3 Hemi engines:

• Constructed from three to five layers of high-strength stainless steel for enhanced durability and resilience.
• Outer layers are embossed and coated on both sides with heat-resistant Viton rubber, capable of withstanding temperatures up to 250°C (482°F).
• Viton coating provides excellent sealing against harsh environments, varying load conditions, and diverse surface finishes.
• Precisely engineered to fit a 3.950-inch bore, ensuring a perfect seal for the 5.7L Gen-3 Hemi engine.
• Designed to resist corrosion and maintain sealing integrity over extended service life.
• Compatible with a wide range of Chrysler, Dodge, Jeep, and Ram models from 2003 to 2015.
• Ideal for OEM replacement or performance upgrades requiring a reliable, high-quality gasket.
• Maintains proper compression and prevents coolant and oil leaks under high-pressure conditions.

Construction & Design

The Cometic MLS Cylinder Head Gasket features a multi-layer steel construction that expertly balances strength and flexibility. Stainless steel layers provide exceptional tensile strength and the ability to rebound after compression, which is critical for maintaining a consistent seal as the engine cycles through heating and cooling phases.

The embossed outer layers enhance the gasket’s ability to conform tightly to the cylinder head and engine block surfaces, improving sealing performance. Both sides are coated with Viton rubber, a synthetic fluoropolymer elastomer known for its outstanding chemical resistance and high-temperature tolerance. This coating ensures a tight, durable seal even in harsh operating environments, resisting degradation from engine fluids and thermal cycling. The .120-inch thickness is optimized specifically for the 5.7L Gen-3 Hemi, balancing durability with precise fitment.

Installation & Fitment

This gasket is designed as a direct fit replacement for the left-hand side cylinder head on 5.7L Gen-3 Hemi engines. Installation follows standard head gasket replacement procedures, including proper surface preparation and adherence to manufacturer torque specifications. No modifications are necessary, making it suitable for professional shops and experienced DIY mechanics alike.

Fitment covers a comprehensive range of vehicles equipped with the 5.7L Gen-3 Hemi engine, including:

• 2003–2010 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
• 2011–2015 Ram 1500, 2500, 3500
• 2006–2010 Jeep Commander

What's Included

• One Cometic MLS Cylinder Head Gasket (.120in thickness) for 5.7L Gen-3 Hemi Left-Hand Side

Ideal For

This gasket is perfect for vehicle owners, mechanics, and performance enthusiasts seeking a high-quality, durable replacement for the cylinder head gasket on 5.7L Gen-3 Hemi engines. It is well-suited for engine rebuilds, repairs, and upgrades on Dodge Ram trucks, Chrysler 300 sedans, Jeep Grand Cherokee SUVs, and Dodge muscle cars. Its robust construction also supports reliable sealing under moderate performance driving conditions, ensuring long-lasting engine integrity and peace of mind.

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.