Cometic Gasket MLX Cylinder Head Gasket

2011–2019 Dodge Challenger, 2012–2019 Dodge Charger, 2018–2019 Dodge Durango, 2012–2019 Jeep Grand Cherokee, 2012–2014 Chrysler 300, 2014–2019 Ram 2500, 2014–2019 Ram 3500 6.4L Apache Gen-3 Hemi

Part #: C15173-032

Overview

The Cometic Gasket .032in MLX Cylinder Head Gasket is engineered specifically for Chrysler’s 6.4L Apache Gen-3 Hemi engines, providing a precise fit and exceptional sealing performance. Designed to meet the rigorous demands of high-performance and heavy-duty applications, this gasket ensures optimal combustion chamber sealing and long-lasting durability. It is an ideal replacement or upgrade for enthusiasts and professionals aiming to maintain or enhance engine integrity across a broad range of Dodge, Jeep, Chrysler, and Ram vehicles.

Whether restoring a Dodge Challenger SRT8, upgrading a Ram 2500 for heavy towing, or maintaining a Jeep Grand Cherokee SRT, this gasket delivers the reliability and quality necessary to support your engine’s performance and longevity under high stress and temperature conditions.

Key Features

Cometic’s MLX Cylinder Head Gasket incorporates advanced materials and precision manufacturing to provide superior sealing and durability. Key features include:

• .032-inch thickness optimized for maintaining proper compression and sealing
• Specifically designed for 4.150" bore Chrysler 6.4L Apache Gen-3 Hemi engines
• Multi-layer steel (MLS) construction for enhanced strength and heat resistance
• Precision CNC-cut layers ensuring exact fit and consistent sealing surfaces
• Corrosion-resistant coatings to extend gasket life under harsh operating conditions
• Engineered to withstand high cylinder pressures and extreme temperatures
• Compatible with both factory and aftermarket cylinder heads and blocks
• Improves reliability in performance and heavy-duty applications

Construction & Design

The Cometic MLX Cylinder Head Gasket features a multi-layer steel (MLS) design, the industry standard for modern high-performance engines. Multiple layers of high-grade steel are precision stamped and coated to create a durable, flexible sealing surface that conforms perfectly to the cylinder head and engine block. This construction effectively resists warping, blowouts, and leaks even under extreme thermal and mechanical stress.

Each gasket is engineered with a .032-inch thickness to maintain proper combustion chamber volume and compression ratio, ensuring consistent engine performance. The gasket’s bore size and sealing rings are tailored precisely to the 4.150-inch bore of the 6.4L Gen-3 Hemi, guaranteeing a perfect fit and reliable seal for the left-hand side cylinder head.

Installation & Fitment

This gasket is a direct-fit replacement for the left-hand side (LHS) cylinder head on a wide range of vehicles equipped with the 6.4L Apache Gen-3 Hemi engine. Installation follows standard head gasket replacement procedures and should be performed by a qualified technician to ensure proper torque specifications and surface preparation.

No modifications are necessary when installing this gasket on compatible vehicles, making it a straightforward upgrade or repair part for the following models:

• 2011–2019 Dodge Challenger 6.4L 392
• 2012–2019 Dodge Charger 6.4L 392
• 2018–2019 Dodge Durango 6.4L 392
• 2012–2019 Jeep Grand Cherokee 6.4L SRT / SRT8
• 2012–2014 Chrysler 300 6.4L 392
• 2014–2019 Ram 2500 6.4L 392
• 2014–2019 Ram 3500 6.4L 392

What's Included

• One Cometic .032in MLX Cylinder Head Gasket (Left-Hand Side)

Ideal For

This gasket is ideal for performance enthusiasts, professional mechanics, and vehicle owners who demand reliable sealing for their Chrysler 6.4L Gen-3 Hemi engines. It is perfectly suited for those performing engine rebuilds, upgrades, or routine maintenance on muscle cars, trucks, and SUVs that require a durable, high-quality head gasket to maintain engine integrity under high loads and temperatures.

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.