Cometic Gasket MLS Head Gasket

2005–2010 Dodge 6.1L HEMI Iron Block

Part #: C5890-040

Overview

The Cometic MLS (Multi-Layer Steel) Head Gasket is engineered specifically for the demanding requirements of the Dodge 6.1L HEMI engines produced between 2005 and 2010 with iron blocks. Designed to provide superior sealing performance, this gasket is ideal for high-output engines that require reliable durability under extreme conditions. It eliminates the need for additional sealants, ensuring a clean and efficient installation process. Whether you are rebuilding or upgrading your engine, this gasket offers the strength and resilience necessary to maintain optimal engine performance.

Perfect for enthusiasts and professional mechanics alike, the Cometic MLS head gasket ensures a dependable seal between the cylinder head and engine block, preventing leaks and maintaining compression integrity. Its design accommodates the unique challenges posed by aluminum heads paired with iron blocks, making it a trusted choice for Dodge HEMI applications.

Key Features

Cometic’s MLS head gasket incorporates advanced materials and engineering to deliver lasting performance and reliability. Key features include:

• Multi-layer steel construction for enhanced strength and durability
• Embossed outer layers coated with Viton rubber for superior sealing and heat resistance
• Compressed operating thickness of 0.040 inches for precise fitment
• Designed to withstand the shearing forces between aluminum heads and iron blocks
• Corrosion-resistant stainless steel layers to extend gasket life
• No sealants required, simplifying installation and reducing mess
• Heat resistance up to 250°C (482°F) thanks to Viton coating
• Center shim layer of uncoated stainless steel tailored for thickness requirements
• Ideal for high-performance and high-output engine applications

Construction & Design

The Cometic MLS head gasket is constructed from multiple embossed layers of stainless steel, providing exceptional strength and flexibility. The outer layers are coated with Viton, a high-performance fluoroelastomer rubber known for its excellent heat resistance and sealing capabilities. This coating ensures the gasket maintains a tight seal even under harsh thermal and mechanical stresses.

The center shim layer is made from uncoated stainless steel, which allows for precise thickness adjustments to meet specific engine requirements. This multi-layer design not only enhances the gasket’s ability to rebound under pressure but also resists corrosion, making it suitable for long-term use in demanding environments.

Installation & Fitment

This MLS head gasket is designed for direct fitment on 2005–2010 Dodge 6.1L HEMI engines with iron blocks. Installation requires standard head gasket replacement procedures and does not necessitate any modifications or additional sealants. Its precise thickness and durable construction ensure a reliable seal that maintains engine compression and prevents coolant or oil leaks.

For best results, ensure the mating surfaces are clean and flat before installation. Proper torque specifications should be followed to maximize gasket performance and longevity.

What's Included

• One Cometic MLS Head Gasket, 0.040 inch compressed thickness

Ideal For

This head gasket is ideal for Dodge 6.1L HEMI owners seeking a high-quality replacement part that delivers reliable sealing under high-performance conditions. It is well-suited for engine rebuilds, performance upgrades, and maintenance on vehicles used in street, track, or light-duty racing applications. Professional mechanics and automotive enthusiasts will appreciate its durability, ease of installation, and compatibility with aluminum heads and iron blocks.