• Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 86mm Bore (.051 inch) (C4349-051)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 86mm Bore (.051 inch) (C4349-051)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 86mm Bore (.051 inch) (C4349-051)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 86mm Bore (.051 inch) (C4349-051)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 86mm Bore (.051 inch) (C4349-051)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 86mm Bore (.051 inch) (C4349-051)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 86mm Bore (.051 inch) (C4349-051)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 86mm Bore (.051 inch) (C4349-051)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 86mm Bore (.051 inch) (C4349-051)
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Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 86mm Bore (.051 inch) (C4349-051)

Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 86mm Bore (.051 inch) (C4349-051)

C4349-051

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$143.09 USD
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The Cometic MLS (Multi-Layer Steel) Head Gasket for BMW 318 and Z3 models from 1989 to 1998 is a high-performance sealing component designed for M42 and M44 engines. Constructed with multiple embossed layers of stainless steel, the gasket features outer layers coated with Viton rubber to enhance durability and sealing integrity. With a compressed thickness of 0.051 inches, this gasket provides maximum sealing performance for high-output engines, ensuring reliable compression and preventing leaks under demanding conditions. Its multi-layer steel design offers increased strength and shearing resistance, making it suitable for both aluminum heads and aluminum or cast iron blocks. The gasket requires no sealants, simplifying installation and ensuring a secure fit.

This gasket is specifically engineered for direct replacement in BMW 318 and Z3 models from 1989 to 1998, compatible with engines featuring 86mm bore sizes. It is ideal for performance applications, including street and track use, where enhanced sealing and durability are critical. The gasket’s robust construction allows it to withstand the shearing forces generated by high-performance engines, making it suitable for modified or stock setups. Installation involves replacing the existing head gasket with this MLS component, ensuring a proper seal between the cylinder head and engine block. It is compatible with engines that utilize aluminum heads and can be used in both daily driving and more aggressive driving scenarios.

Overview

Cometic Gasket Head Gasket

Fits 1989–1998 BMW 318 and Z3 with 86mm bore

Part #: C4349-051

Overview

The Cometic MLS (Multi-Layer Steel) Head Gasket is a high-performance sealing solution designed for BMW engines, specifically the 318 and Z3 models from 1989 to 1998 with an 86mm bore. Crafted from multiple embossed layers of stainless steel, this gasket features outer layers coated with Viton rubber, ensuring durability and reliable sealing under demanding conditions. Its compressed thickness of 0.051 inches makes it suitable for high-output engines, providing a robust barrier against leaks and maintaining optimal compression. This gasket is ideal for enthusiasts and professional rebuilders seeking a dependable, no-sealant-required solution that supports engine integrity and performance. Whether you're restoring a classic BMW or upgrading your engine, this MLS gasket helps ensure a secure seal between the cylinder head and engine block, preventing coolant and combustion gases from escaping. Its design accommodates both aluminum and cast iron components, making it versatile for various engine configurations. The gasket’s construction helps withstand shearing forces created by different materials, maintaining a consistent seal even under high pressure and temperature conditions.

Key Features

This MLS head gasket combines advanced materials and engineering to deliver superior performance and reliability:
  • Constructed from multiple embossed stainless steel layers for strength and durability
  • Outer layers coated with Viton rubber for enhanced sealing and chemical resistance
  • Compressed thickness of 0.051 inches for high-performance applications
  • Designed to seal effectively between aluminum heads and blocks or cast iron components
  • Resists shearing forces caused by material differences in engine construction
  • No sealants required, simplifying installation and reducing potential leak points
  • Supports high-output and high-compression engine builds

Construction & Design

The gasket’s multilayer steel construction ensures a precise fit and long-lasting seal. The embossed layers provide flexibility and resilience, accommodating thermal expansion and engine vibrations. The Viton rubber coating on the outer layers enhances sealing performance and chemical resistance, making it suitable for high-temperature environments.

Installation & Fitment

This gasket is designed for straightforward installation in compatible BMW M42 and M44 engines. Proper surface preparation and torque procedures are recommended to achieve optimal sealing and performance.

What’s Included

The package includes one MLS head gasket tailored for 86mm bore BMW engines, ready for installation in rebuild or repair projects.

Ideal For

This gasket is perfect for automotive enthusiasts, professional rebuilders, and anyone restoring or upgrading BMW engines from the late 80s to the late 90s, seeking a reliable sealing solution that supports high-performance applications.
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