Cometic Gasket MLS Head Gasket

1998–2008 Dodge Ram 2500 / Ram 3500 Diesel Round Port

C5726-040

Overview:

The Cometic MLS Head Gasket is engineered specifically for Dodge Ram 2500 and Ram 3500 diesel engines from 1998 to 2008 featuring round port designs. This multi-layer steel (MLS) gasket delivers superior sealing performance and durability for demanding diesel applications. Designed to withstand high cylinder pressures and thermal cycling, it is an ideal upgrade for those seeking reliable head gasket performance in heavy-duty trucks. Whether you are rebuilding your engine or upgrading for enhanced reliability, this gasket ensures a precise seal between the cylinder head and engine block.

Built to meet the rigorous demands of diesel engines, the Cometic MLS gasket offers excellent resistance to blowouts, corrosion, and bore distortion, making it a trusted choice for both professional mechanics and performance enthusiasts.

Key Features:

This MLS head gasket incorporates advanced materials and design features to provide a durable and effective seal under harsh conditions:

• Constructed from three layers of high-strength stainless steel for enhanced durability and strength.
• Outer layers are embossed and coated with a heat-resistant Viton (fluoroelastomer rubber) material, rated up to 250°C (482°F), to withstand extreme temperatures and harsh sealing environments.
• Center shim layer is uncoated stainless steel, allowing for customizable thickness to meet specific engine requirements.
• Designed to handle the shearing forces between aluminum cylinder heads and cast iron blocks without failure.
• Promotes even torque distribution across the sealing surface, reducing bore distortion and improving engine longevity.
• No re-torque required after installation, simplifying maintenance and reducing downtime.
• Compatible with both aluminum heads to cast iron blocks and aluminum heads to aluminum blocks.

Construction & Design:

The Cometic MLS Head Gasket features a robust three-layer stainless steel construction that balances strength, flexibility, and corrosion resistance. The outer layers are precision embossed to enhance sealing capability and coated with a Viton-based material that provides exceptional heat resistance and chemical durability. This coating ensures a reliable seal even under the extreme thermal and mechanical stresses typical of diesel engines.

The uncoated stainless steel shim in the center layer allows for precise thickness adjustments, ensuring a perfect fit and optimal compression across the gasket surface. This design minimizes bore distortion and maintains consistent sealing pressure, which is critical for maintaining engine performance and preventing leaks.

Installation & Fitment:

This head gasket is a direct fit replacement for Dodge Ram 2500 and Ram 3500 diesel engines from 1998 through 2008 with round port cylinder heads. Installation requires standard head gasket replacement procedures and does not necessitate any modifications or special re-torqueing steps. The gasket’s design ensures a secure seal immediately upon proper torque application, streamlining the installation process and reducing the risk of future leaks.

What's Included:

• One Cometic MLS Head Gasket, part number C5726-040

Ideal For:

This gasket is ideal for diesel truck owners, mechanics, and performance builders who require a reliable, high-quality head gasket for Dodge Ram 2500 and 3500 models from 1998 to 2008. It is especially suited for those upgrading or rebuilding engines with aluminum heads and cast iron or aluminum blocks, seeking enhanced durability and sealing performance under heavy-duty conditions.

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.