Cometic Gasket MLX RHS Head Gasket

2011–2026 Chrysler, Dodge, Jeep, Ram 6.4L 392 & 6.4L SRT

Part #: C15172-054

Overview

The Cometic MLX RHS Head Gasket is engineered for high-performance sealing in Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.4L 392 and 6.4L SRT engines from 2011 through 2026. Designed to handle the demanding conditions of modern V8 powerplants, this gasket ensures a reliable seal between the cylinder head and engine block, preventing leaks and maintaining optimal compression. Ideal for enthusiasts and professional builders alike, the MLX RHS gasket supports both street and track applications where durability and precision are paramount.

Whether you are rebuilding your engine or upgrading for enhanced performance, this gasket delivers consistent sealing performance with a bore size of 4.150 inches and a thickness of .054 inches, tailored to exact OEM specifications and beyond.

Key Features

Cometic’s MLX RHS Head Gasket incorporates advanced materials and manufacturing techniques to meet the rigorous demands of high-output engines. Key features include:

• Precision bore size of 4.150" and thickness of .054" for exact fitment and sealing
• Multi-layer steel (MLS) construction for superior durability and resistance to warping
• Reinforced sealing layers designed to withstand high cylinder pressures and temperatures
• Compatibility with a wide range of Chrysler, Dodge, Jeep, and Ram 6.4L 392 and 6.4L SRT engines from 2011 to 2026
• Resistance to corrosion and chemical degradation for long-lasting performance
• Manufactured using advanced processes ensuring consistent quality and reliability
• Optimized for both naturally aspirated and forced induction applications
• Designed to maintain a leak-free seal under extreme operating conditions

Construction & Design

The Cometic MLX RHS Head Gasket features a multi-layer steel design that combines layers of stainless steel with proprietary sealing materials. This construction provides excellent tensile strength and flexibility, allowing the gasket to conform to irregular surfaces and maintain a tight seal even under high thermal and mechanical stress. The gasket’s armor-clad and galvanized steel layers enhance durability and resistance to corrosion, ensuring longevity in demanding engine environments.

Cometic’s use of premium alloy materials such as copper, aluminum, and stainless steel in their gasket construction results in superior sealing performance and reliability. The gasket’s thickness and bore dimensions are engineered to OEM standards, ensuring perfect compatibility and ease of installation.

Installation & Fitment

This head gasket is designed for direct replacement on compatible 6.4L 392 and 6.4L SRT engines found in Chrysler 300, Dodge Challenger, Dodge Charger, Dodge Durango, Jeep Grand Cherokee, Jeep Wrangler, and Ram 2500/3500 models from 2011 through 2026. Installation requires standard engine disassembly procedures and proper torque specifications to ensure optimal sealing. No modifications are necessary when used with stock or upgraded cylinder heads and blocks that match the specified bore and thickness.

For best results, always follow manufacturer torque sequences and use recommended head bolts or studs during installation.

What's Included

• One Cometic MLX RHS Head Gasket (4.150" Bore, .054" Thickness)

Ideal For

This head gasket is ideal for performance enthusiasts, engine builders, and professional mechanics seeking a reliable, high-quality sealing solution for Chrysler, Dodge, Jeep, and Ram 6.4L 392 and 6.4L SRT engines. It suits applications ranging from daily driving to high-performance street and track use, providing peace of mind with its robust construction and precise fitment.

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.