Cometic Gasket Gen-3 MLS Head Gasket

2011–2019 Dodge Challenger / 2012–2014 Chrysler 300 / 2012–2019 Dodge Charger / 2018–2019 Dodge Durango / 2012–2019 Jeep Grand Cherokee / 2014–2019 Ram 2500 & 3500 6.4L HEMI

C15173-044

Overview:

The Cometic Gen-3 Multi-Layer Steel (MLS) Head Gasket is engineered specifically for the 6.4L HEMI engines found in a range of Chrysler, Dodge, Jeep, and Ram vehicles. Designed to deliver superior sealing performance, this gasket is ideal for high-output applications where durability and reliability are critical. It provides a robust seal between the cylinder head and engine block, ensuring optimal combustion chamber integrity and preventing leaks under extreme conditions.

Perfect for enthusiasts and professional builders alike, this gasket supports the demanding requirements of modern performance engines without the need for additional sealants. Whether you’re rebuilding, upgrading, or maintaining your Gen-3 6.4L HEMI, this gasket offers peace of mind and long-lasting performance.

Key Features:

Cometic’s Gen-3 MLS Head Gasket incorporates advanced materials and design features to meet the rigorous demands of high-performance engines:

• Multi-layer stainless steel construction for enhanced strength and durability
• Embossed outer layers coated with heat-resistant Viton rubber for superior sealing
• Compressed operating thickness of 0.098" ensures precise fit and reliable compression
• Compatible with aluminum heads to aluminum or cast iron blocks, resisting shearing forces
• Corrosion-resistant materials extend gasket life under harsh conditions
• Center shim layer of uncoated stainless steel tailored for exact thickness requirements
• Viton coating withstands temperatures up to 250°C (482°F) and harsh sealing environments
• Designed for the left-hand side (LHS) bore size of 4.150 inches with .044 inch thickness
• No sealants required, simplifying installation and reducing potential failure points

Construction & Design:

This head gasket features multiple embossed layers of premium stainless steel, providing exceptional strength and the ability to rebound under pressure. The outer layers are coated with Viton, a high-performance fluoroelastomer rubber known for its heat resistance and chemical stability. This coating enhances the gasket’s ability to maintain a tight seal despite thermal cycling and mechanical stress.

The center shim layer is uncoated stainless steel, allowing precise control over gasket thickness to match engine specifications. This multi-layer design effectively accommodates the differential expansion between aluminum heads and cast iron or aluminum blocks, preventing leaks caused by shearing forces.

Installation & Fitment:

The Cometic Gen-3 MLS Head Gasket is designed as a direct replacement for factory gaskets on compatible vehicles, ensuring a straightforward installation process without the need for modifications. Its precise dimensions and robust construction allow it to maintain a reliable seal under high cylinder pressures typical of the 6.4L HEMI Gen-3 engines.

Fitment covers a wide range of vehicles equipped with the 6.4L HEMI, including:

• Dodge Challenger (2011–2019)
• Chrysler 300 SRT8 (2012–2014)
• Dodge Charger (2012–2019)
• Dodge Durango SRT (2018–2019)
• Jeep Grand Cherokee SRT and SRT8 (2012–2019)
• Ram 2500 and 3500 models (2014–2019)

What's Included:

• One Cometic Gen-3 MLS Head Gasket, Left Side, .044" Thickness, 4.150" Bore

Ideal For:

This gasket is ideal for performance enthusiasts, professional engine builders, and mechanics working on Gen-3 6.4L HEMI engines who demand a reliable, high-quality sealing solution. It is especially suited for vehicles subjected to high horsepower, track use, towing, or heavy-duty applications where factory gaskets may fall short.

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.