Cometic Gasket Cylinder Head Gasket

2003–2015 Dodge Ram 1500, 2003–2010 Dodge Ram 2500, 2003–2009 Dodge Ram 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, 2011–2015 Ram 2500, 2011–2015 Ram 3500 5.7L Gen-3 Hemi

Part #: C5468-140

Overview

The Cometic Gasket 5.7L Gen-3 Hemi .140in MLS Cylinder Head Gasket is engineered to deliver exceptional sealing performance for a broad range of Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 5.7L Gen-3 Hemi engine. Designed for both professional mechanics and automotive enthusiasts, this gasket ensures a reliable, leak-free seal under demanding operating conditions, maintaining engine integrity and optimal performance.

Whether you are performing an OEM replacement or upgrading for high-performance applications, this gasket offers enhanced durability and resistance to extreme heat and pressure. It is a trusted component that supports engine longevity and consistent function across multiple vehicle models and production years.

Key Features

Cometic’s advanced engineering and premium materials make this MLS cylinder head gasket a superior choice for 5.7L Gen-3 Hemi engines. Key features include:

• Multi-Layer Steel (MLS) construction with three to five layers of stainless steel for outstanding strength and durability
• Outer layers embossed and coated on both sides with heat-resistant Viton rubber, rated up to 250°C (482°F)
• Exceptional rebound capability to maintain a consistent seal through thermal expansion and contraction cycles
• Corrosion-resistant stainless steel layers to extend gasket life and reliability
• Precision bore size of 3.950 inches, matching factory specifications for the 5.7L Gen-3 Hemi engine
• Designed to withstand high combustion pressures and temperature fluctuations typical of performance engines
• Compatible with a wide range of Chrysler, Dodge, Jeep, and Ram models from 2003 through 2015
• Coated on both sides to improve sealing and minimize the risk of leaks

Construction & Design

This cylinder head gasket features a robust multi-layer steel (MLS) design, utilizing three to five layers of premium stainless steel. The stainless steel construction provides superior tensile strength and flexibility, allowing the gasket to maintain a tight, reliable seal even under extreme thermal expansion and contraction cycles common in high-performance and heavy-duty engines.

The gasket’s outer layers are embossed and coated with Viton rubber on both sides, a material renowned for its excellent heat resistance and chemical stability. This coating enhances the gasket’s ability to seal against various surface finishes and withstand harsh engine environments, including exposure to oil, coolant, and combustion gases.

Installation & Fitment

The Cometic MLS cylinder head gasket is designed as a direct fit replacement for the left-hand side (LHS) cylinder head on 5.7L Gen-3 Hemi engines. It installs easily without the need for modifications when following manufacturer torque specifications, ensuring optimal sealing performance and longevity.

This gasket fits a broad range of vehicles, including Dodge Ram 1500 (2003–2010), Ram 2500 (2003–2010), Ram 3500 (2003–2009), 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 Ram models from 2011 to 2015.

What's Included

• One Cometic 5.7L Gen-3 Hemi .140in MLS Cylinder Head Gasket (Left-Hand Side)

Ideal For

This gasket is ideal 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 daily drivers, engine rebuilds, repairs, and performance upgrades where a reliable seal is critical to prevent leaks and maintain engine efficiency.

Whether restoring a classic Dodge Ram or upgrading a Chrysler 300, this gasket provides the durability and sealing performance needed to keep your engine running smoothly under all conditions.

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.