Cometic Gasket Cylinder Head Gasket

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

Part #: C5468-045

Overview

The Cometic Gasket 5.7L Gen-3 Hemi .045in 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 automotive enthusiasts and professional mechanics, this gasket provides reliable durability and leak prevention under high combustion pressures and extreme thermal cycles.

Whether you are performing an engine rebuild, upgrading your performance components, or conducting routine maintenance, this gasket offers a direct OEM-quality replacement that ensures optimal engine efficiency and longevity. Its robust construction and precise fitment make it an ideal choice for maintaining the integrity of your engine’s combustion chamber.

Key Features

Cometic’s 5.7L Gen-3 Hemi MLS Cylinder Head Gasket incorporates advanced materials and design elements to ensure superior performance and durability:

• Multi-Layer Steel (MLS) construction with three to five layers of stainless steel for enhanced strength and flexibility
• Embossed outer layers coated with Viton rubber on both sides for superior sealing and chemical resistance
• Viton coating rated for heat resistance up to 250°C (482°F), ensuring reliable performance under high-temperature conditions
• Precisely engineered bore size of 3.950 inches to match factory specifications for the 5.7L Gen-3 Hemi engine
• Designed to withstand high combustion pressures and resist corrosion and gasket blowout
• Compatible with a wide range of Chrysler, Dodge, Jeep, and Ram models from 2003 through 2015
• Excellent rebound characteristics to maintain a consistent seal over time
• OEM-quality fitment for direct replacement without modifications

Construction & Design

This cylinder head gasket features a robust multi-layer steel design, combining three to five layers of high-grade stainless steel to provide superior strength, flexibility, and resistance to thermal fatigue. The stainless steel layers ensure long-lasting durability and corrosion resistance, critical for maintaining a reliable seal in demanding engine environments.

The embossed outer layers are coated with a specialized Viton rubber compound on both sides. Viton is renowned for its exceptional chemical resistance and ability to withstand extreme temperatures, making it ideal for sealing combustion chambers and coolant passages. This coating enhances the gasket’s ability to conform to surface irregularities and maintain a leak-free seal under varying load and temperature conditions.

Installation & Fitment

The Cometic 5.7L Gen-3 Hemi MLS Cylinder Head Gasket is designed for straightforward installation as a direct OEM replacement on the left-hand side (LHS) cylinder head. It matches the exact bore size and thickness specifications required for proper sealing, eliminating the need for any modifications to the engine block or cylinder head. Proper torque specifications and installation procedures should be followed to maximize gasket performance and longevity.

This gasket fits a wide range of vehicles, including:

• 2003–2010 Dodge Ram 1500, 2500, 3500 5.7L Hemi
• 2004–2015 Dodge Durango 5.7L Hemi
• 2005–2015 Jeep Grand Cherokee 5.7L Hemi
• 2005–2015 Chrysler 300 5.7L Hemi
• 2005–2008 Dodge Magnum 5.7L Hemi
• 2006–2015 Dodge Charger 5.7L Hemi
• 2009–2015 Dodge Challenger 5.7L Hemi
• 2006–2010 Jeep Commander 5.7L Hemi
• 2011–2015 Ram 1500, 2500, 3500 5.7L Hemi

What's Included

• One (1) Cometic Gasket 5.7L Gen-3 Hemi .045in MLS Cylinder Head Gasket (Left-Hand Side)

Ideal For

This gasket is ideal for automotive enthusiasts, professional mechanics, and engine rebuilders seeking a high-quality, durable replacement for the 5.7L Gen-3 Hemi engine. It is perfectly suited for performance upgrades, engine rebuilds, and routine maintenance on Chrysler, Dodge, Jeep, and Ram vehicles within the specified model years. Its robust construction ensures reliable sealing for both street-driven and light-duty off-road 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.