Cometic Gasket MLS Cylinder Head Gasket

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

Part #: C5026-070

Overview

The Cometic Gasket 6.4L Gen-3 Hemi .070in MLS Cylinder Head Gasket is engineered to deliver exceptional sealing performance for high-output Chrysler, Dodge, Jeep, and Ram engines. Designed specifically for the 6.4L Apache Gen-3 Hemi, this gasket provides a reliable, precision fit that withstands the extreme pressures and temperatures encountered in performance and heavy-duty applications.

Ideal for engine rebuilds, upgrades, or maintenance on muscle cars, SUVs, and trucks, this gasket ensures consistent durability and leak prevention without the need for additional sealants. Whether you’re restoring a Dodge Challenger Scat Pack, maintaining a Ram 3500, or enhancing a Jeep Grand Cherokee SRT, this Cometic gasket supports your engine’s integrity and power delivery.

Key Features

Cometic’s MLS head gasket incorporates advanced materials and design elements to meet the demands of modern high-performance engines:

• Multi-Layer Steel (MLS) construction with multiple embossed stainless steel layers for superior strength and sealing capability
• Outer layers coated with heat-resistant Viton rubber, rated up to 250°C (482°F), to prevent combustion gas and coolant leaks
• Compressed operating thickness of 0.036 inches for precise sealing and optimal compression ratio maintenance
• Compatible with aluminum heads to aluminum blocks and aluminum heads to cast iron blocks, resisting shearing forces between dissimilar metals
• Corrosion-resistant stainless steel layers enhance longevity and reliability in harsh engine environments
• Designed for a 4.120-inch bore size, matching factory specifications for the 6.4L Gen-3 Hemi engine
• Right-hand side (RHS) configuration with coating on both sides for enhanced sealing performance
• No additional sealants required, simplifying installation and reducing potential failure points

Construction & Design

This gasket features a core made from multiple layers of high-grade stainless steel, each embossed to improve sealing contact and flexibility. The outermost layers are coated with Viton, a premium fluorocarbon elastomer known for exceptional heat resistance and chemical durability. This coating ensures a tight seal against combustion pressures and fluid leaks, even under extreme thermal cycling.

The uncoated stainless steel shim layer at the center provides structural integrity and precise thickness control, meeting the specific .070-inch thickness requirement for the 6.4L Gen-3 Hemi. This multi-layer design allows the gasket to absorb and rebound from engine stresses, maintaining a reliable seal over time.

Installation & Fitment

This MLS cylinder head gasket is a direct replacement for factory gaskets on compatible vehicles, fitting a broad range of models including:

• 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
• 2012–2014 Chrysler 300 6.4L 392
• 2014–2018 Ram 2500 & 3500 6.4L 392

Installation follows standard head gasket replacement procedures with no modifications required to the engine block or cylinder heads. The gasket’s OEM-spec design ensures proper sealing without additional sealants or adhesives, streamlining installation and minimizing leak risks.

What's Included

• One Cometic Gasket 6.4L Apache Gen-3 Hemi .070in MLS Cylinder Head Gasket (Right-Hand Side, Viton coated both sides)

Ideal For

This gasket is perfect for performance enthusiasts, professional engine builders, and mechanics working on high-output 6.4L Gen-3 Hemi engines. It excels in street performance, occasional track use, and heavy-duty applications where reliable sealing and durability are critical. Whether upgrading a muscle car, maintaining a powerful SUV, or rebuilding a heavy-duty truck engine, this Cometic MLS gasket delivers the confidence and quality needed to support demanding engine performance.

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.