Cometic Gasket

Fits BMW M20 2.5L and 2.7L Engines

Part #: C4394-040

Overview

The Cometic BMW M20 MLS Head Gasket is a high-performance sealing solution designed specifically for BMW enthusiasts and professional rebuilders. Crafted from multiple embossed layers of stainless steel with a Viton rubber coating on the outer layers, this gasket ensures a reliable seal under demanding conditions. With a compressed thickness of 0.040 inches, it provides optimal clearance and compression for high-output engines, helping to maintain engine integrity and performance. Whether you're restoring a classic BMW or upgrading a performance build, this gasket offers a durable and precise sealing surface that supports your engine’s longevity and efficiency.

Key Features

This MLS head gasket is engineered to withstand the stresses of modern high-performance engines, providing a robust barrier against leaks and compression loss. Its multilayer steel construction offers excellent strength and flexibility, accommodating thermal expansion and shearing forces between aluminum heads and cast iron blocks. The Viton rubber coating enhances sealing capabilities and resists oil, coolant, and combustion gases, eliminating the need for additional sealants. Designed for easy installation, it ensures a secure fit that maintains consistent compression across the cylinder head.

• Multi-layer steel (MLS) construction for maximum durability
• Outer layers with Viton rubber coating for enhanced sealing
• 0.040" compressed thickness for optimal clearance
• Compatible with aluminum heads and cast iron blocks
• Resists shearing forces created by different materials
• No sealants required for installation
• Designed for high-output and performance engines

Construction & Design

The gasket’s multilayer steel design combines embossed stainless steel layers with a Viton rubber outer coating, providing a resilient and adaptable sealing surface. The embossed layers help distribute pressure evenly, reducing the risk of leaks and gasket failure under high thermal and mechanical stress. The materials used are engineered to withstand the temperature fluctuations and shearing forces typical in high-performance BMW engines, ensuring long-lasting reliability.

Installation & Fitment

This gasket is designed as a direct replacement for OEM head gaskets on BMW M20 engines, specifically for 2.5L and 2.7L variants. Proper installation requires standard engine rebuild procedures, including cleaning the mating surfaces and ensuring proper torque specifications. Its precise dimensions facilitate a straightforward installation process, making it suitable for both professional mechanics and experienced DIY enthusiasts.

Ideal For

Ideal for engine rebuilds, performance upgrades, and restoration projects involving BMW M20 engines. It is perfect for those seeking a reliable, high-quality gasket that supports engine durability and optimal sealing performance in high-output applications.