Cometic Gasket MLX Head Gasket

2005–2010 Chrysler 300, 2005–2010 Jeep Grand Cherokee, 2006–2010 Dodge Charger, 2005–2008 Dodge Magnum, 2008–2010 Dodge Challenger 6.1L SRT8

Part #: C15149-054

Overview

The Cometic MLX Head Gasket is engineered specifically for high-performance 6.1L SRT8 engines found in select Chrysler, Dodge, and Jeep models from 2005 to 2010. Designed to provide a superior seal between the cylinder head and engine block, this gasket is ideal for enthusiasts and professionals seeking reliability and durability under demanding conditions. Its precise 4.10" bore and .054" thickness ensure optimal fitment and performance for the open deck block architecture of these powerful engines.

Whether you are rebuilding, upgrading, or maintaining your SRT8, the Cometic MLX gasket offers enhanced sealing capabilities that help prevent leaks and maintain combustion integrity, which is critical for maximizing engine efficiency and longevity.

Key Features

This head gasket incorporates advanced technology and materials to deliver exceptional performance and reliability:

• HP Shim Technology increases clampload around the combustion chamber for improved sealability on open deck blocks
• Embossed outer layers coated with Viton provide enhanced chemical resistance and durability
• Precision CNC manufacturing ensures consistent thickness and bore dimensions for perfect fitment
• Designed specifically for the 6.1L HEMI SRT8 engine to handle high cylinder pressures
• Compatible with multiple Chrysler, Dodge, and Jeep SRT8 models from 2005 to 2010
• Thickness of .054" balances sealing strength with proper head-to-block clearance
• Embossed sealing beads improve gasket compression and prevent blowouts
• Constructed to withstand high temperatures and aggressive operating conditions

Construction & Design

The Cometic MLX Head Gasket is crafted from multi-layer steel (MLS) with embossed outer layers that are coated in Viton, a high-performance elastomer known for its resistance to heat, oil, and chemicals. This coating enhances the gasket’s longevity and sealing capability under extreme thermal cycling and combustion pressures. The HP shim technology integrated into the gasket design increases the clamping force around the combustion chamber, which is especially important for open deck engine blocks like the 6.1L HEMI. This design reduces the risk of head gasket failure and ensures a reliable seal throughout the engine’s operating range.

Installation & Fitment

This gasket is a direct replacement for the factory head gasket on 6.1L SRT8 engines in the specified Chrysler, Dodge, and Jeep models. Installation requires removal of the cylinder heads and proper surface preparation to ensure a clean, flat sealing surface. It is recommended to replace the head bolts and follow manufacturer torque specifications to achieve the best sealing results. The gasket’s precise dimensions and engineered thickness allow for straightforward installation without the need for modifications.

What's Included

• One Cometic MLX Head Gasket (4.10" Bore, .054" Thickness)
• Note: Purchase quantity of two is required to replace gaskets on both cylinder heads

Ideal For

This head gasket is ideal for performance enthusiasts, professional engine builders, and mechanics working on Chrysler 300C, Dodge Charger, Dodge Challenger, Dodge Magnum, and Jeep Grand Cherokee models equipped with the 6.1L SRT8 engine. It is well suited for high-performance street vehicles, track cars, and rebuild projects requiring a durable and reliable sealing solution capable of handling elevated combustion pressures 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.