Cometic Gasket MLS Cylinder Head Gasket

1991–2006 Jeep Wrangler & 1993–2004 Jeep Grand Cherokee 4.0L Inline 6

Part #: C5987-060

Overview

The Cometic Gasket MLS Cylinder Head Gasket is a premium sealing solution engineered specifically for Jeep 4.0L Inline 6 engines used in Wrangler and Grand Cherokee models from 1991 through 2006 (Wrangler) and 1993 through 2004 (Grand Cherokee). Designed to meet the rigorous demands of both daily driving and high-performance applications, this multi-layer steel (MLS) gasket ensures a reliable seal between the cylinder head and engine block, preventing leaks and maintaining optimal compression.

Ideal for Jeep enthusiasts, mechanics, and professionals performing engine rebuilds, upgrades, or repairs, the Cometic MLS gasket offers enhanced durability and longevity. Its advanced construction eliminates the need for additional sealants, simplifying installation while providing superior resistance to heat, corrosion, and mechanical stress.

Key Features

Built with precision engineering and high-quality materials, the Cometic MLS Cylinder Head Gasket delivers consistent sealing performance and reliability. Key features include:

• Multiple embossed stainless steel layers for superior strength and sealing capability
• Heat-resistant Viton rubber coating to withstand extreme temperatures
• Designed specifically for Jeep 4.0L Inline 6 engines to ensure perfect compatibility
• No additional sealants required, streamlining installation and reducing mess
• Excellent corrosion resistance to extend gasket service life
• Flexible design accommodates thermal expansion differences between aluminum heads and cast iron blocks
• Precision bore size of 3.950mm and thickness of 0.060 inches for optimal fit and sealing
• Compatible with a wide range of Jeep Wrangler and Grand Cherokee models from 1991 to 2006 and 1993 to 2004 respectively

Construction & Design

The Cometic MLS Cylinder Head Gasket features a robust multi-layer steel construction composed of several embossed stainless steel layers. This design enhances the gasket’s ability to maintain a tight, leak-free seal under high pressure and temperature fluctuations commonly encountered in performance and off-road environments.

Each steel layer is coated with a heat-resistant Viton rubber compound that improves sealing integrity and protects against chemical degradation caused by engine fluids and extreme heat. The gasket’s flexible design compensates for the natural expansion differences between aluminum cylinder heads and cast iron engine blocks, significantly reducing the risk of leaks and gasket failure over time.

Installation & Fitment

Installation of the Cometic MLS Cylinder Head Gasket is straightforward and user-friendly, requiring no additional sealants. It is engineered for a precise fit on Jeep 4.0L Inline 6 engines found in the following models:

• 1991–1995 Jeep Wrangler 4.0L I6
• 1997–2006 Jeep Wrangler 4.0L I6
• 1993–2004 Jeep Grand Cherokee 4.0L I6

For best results, follow proper torque specifications and installation procedures to ensure optimal sealing and gasket longevity. This gasket is compatible with both OEM and aftermarket cylinder heads and engine blocks within the specified fitment range.

What's Included

• One Cometic MLS Cylinder Head Gasket (Part # C5987-060)

Ideal For

This gasket is ideal for Jeep owners, mechanics, and performance enthusiasts who demand a reliable, durable sealing solution for the 4.0L Inline 6 engine. It is perfect for engine rebuilds, upgrades, and repairs on Jeep Wrangler and Grand Cherokee models spanning the early 1990s through the mid-2000s. Its robust construction and precision fit make it suitable for daily driving, off-road adventures, and high-performance applications where engine integrity is critical.

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.