Cometic Gasket MLS Head Gasket

Fits BMW M30 and S38B35 Engines 1984–1992

Part #: C4478-040

Overview

The Cometic MLS (Multi-Layer Steel) Head Gasket is engineered to deliver superior sealing performance for high-output BMW engines. Crafted from multiple embossed layers of stainless steel with a Viton rubber coating on the outer layers, this gasket is designed to withstand the demanding conditions of performance and racing applications. It is an ideal choice for enthusiasts and professional rebuilders seeking a reliable, durable solution that maintains optimal compression and prevents leaks under extreme conditions. Whether you're restoring a classic BMW or building a high-performance engine, this gasket helps ensure a tight seal and long-lasting durability. Designed specifically for BMW M30 and S38B35 engines from 1984 to 1992, this gasket supports both aluminum and cast iron engine components, making it versatile for various rebuild scenarios. Its compressed thickness of 0.040 inches provides a perfect balance between sealing integrity and clearance, helping to maintain proper engine compression and performance. The gasket’s construction helps resist shearing forces created by the different materials in the engine, ensuring a secure fit over the engine’s lifespan.

Key Features

This MLS head gasket features a multi-layer steel construction with embossed layers for enhanced strength and sealing capability. The Viton rubber coating on the outer layers improves sealing against combustion pressures and coolant or oil passages. Designed to eliminate the need for sealants, it simplifies installation while providing a reliable, leak-free seal. Its high-quality materials and engineering make it suitable for high-performance applications, supporting engine longevity and consistent power output. The gasket’s design helps prevent head gasket failures, even under increased boost or compression ratios, making it an excellent upgrade for performance builds.

Construction & Design

The gasket’s multi-layer steel construction with embossed layers ensures maximum durability and resistance to shearing forces. The Viton rubber coating enhances sealing performance and chemical resistance, providing a robust barrier against combustion gases, coolant, and oil leaks. Its precise engineering ensures a perfect fit for compatible BMW engines, supporting reliable operation under high stress.

Installation & Fitment

This head gasket is designed for straightforward installation on BMW M30 and S38B35 engines from 1984 to 1992. Proper torque specifications and installation procedures should be followed to ensure optimal sealing and performance. It is recommended to inspect the mating surfaces thoroughly before installation to achieve the best results.

What’s Included

The package includes one MLS head gasket designed specifically for BMW M30 and S38B35 engines, with no additional hardware included.