• Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 85mm Bore (.070 inch) (C4348-070)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 85mm Bore (.070 inch) (C4348-070)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 85mm Bore (.070 inch) (C4348-070)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 85mm Bore (.070 inch) (C4348-070)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 85mm Bore (.070 inch) (C4348-070)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 85mm Bore (.070 inch) (C4348-070)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 85mm Bore (.070 inch) (C4348-070)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 85mm Bore (.070 inch) (C4348-070)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 85mm Bore (.070 inch) (C4348-070)
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Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 85mm Bore (.070 inch) (C4348-070)

Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 85mm Bore (.070 inch) (C4348-070)

C4348-070

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$173.16 USD
$204.44 USD $173.16 USD
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The Cometic Gasket MLS Head Gasket for BMW 318 and Z3 models from 1989 to 1998 is a high-performance multi-layer steel component designed to provide superior sealing for M42 and M44 engines. Constructed with multiple embossed layers of stainless steel and featuring outer layers coated with Viton rubber, this gasket ensures excellent durability and resistance to high temperatures and pressures. The compressed operating thickness is 0.070 inches, making it suitable for high-output engine applications. Its design eliminates the need for sealants, simplifying installation while maintaining a reliable seal. The gasket's robust construction allows it to withstand shearing forces between aluminum heads and blocks or cast iron components, making it an ideal upgrade for performance or rebuild projects.

This head gasket is engineered for direct fitment on BMW 318 and Z3 models within the 1989–1998 year range, compatible with both aluminum and cast iron engine blocks. It is suitable for street, track, or high-performance applications where maximum sealing integrity is required. The gasket provides a precise seal to prevent leaks under demanding conditions, supporting engine reliability and performance. Installation involves replacing the existing head gasket with this MLS component, which is designed to match OEM specifications for a straightforward, bolt-on upgrade. It is compatible with engines featuring a bore size of approximately 85mm, ensuring proper fitment and function.

Overview

Cometic Gasket

Fits 1989–1998 BMW 318 and Z3 with M42/M44 Engines

Part #: C4348-070

Overview

The Cometic BMW 318 and Z3 MLS Head Gasket is a high-performance sealing solution designed specifically for high-output engines. Crafted with multiple embossed layers of stainless steel and coated with Viton rubber on the outer layers, this gasket ensures a reliable seal under demanding conditions. Its compressed thickness of 0.070 inches helps maintain proper engine clearance and compression ratios, making it an excellent choice for enthusiasts and professionals seeking durability and performance. Whether you're rebuilding or upgrading your engine, this gasket provides a robust barrier against leaks, heat, and pressure, supporting optimal engine operation and longevity.

Key Features

This MLS head gasket is engineered for maximum sealing performance and durability. Key features include:
  • Multi-layer steel construction with embossed layers for enhanced strength
  • Viton rubber coating for improved sealing and resistance to chemicals
  • Designed to withstand shearing forces between aluminum and cast iron components
  • Ideal for high-output and modified engines
  • No sealants required for installation, simplifying the process
  • Compatible with BMW 318 and Z3 models equipped with M42 and M44 engines from 1989 to 1998

Construction & Design

This gasket features a multi-layer steel (MLS) design, combining multiple embossed stainless steel layers for superior strength and resilience. The outer layers are coated with Viton rubber, a high-performance elastomer that enhances sealing capabilities and chemical resistance. The precise engineering ensures a perfect fit and reliable seal, even under high pressure and temperature conditions typical of high-performance engines.

Installation & Fitment

Designed for direct replacement in BMW 318 and Z3 models with M42 and M44 engines manufactured between 1989 and 1998, this gasket is intended for straightforward installation during engine rebuilds or head gasket replacements. Proper torque specifications and installation procedures should be followed to ensure optimal sealing and performance.

What’s Included

The package includes one MLS head gasket tailored for the specified engine applications, providing a durable and reliable seal for your engine rebuild or upgrade.

Ideal For

This gasket is ideal for automotive enthusiasts, professional rebuilders, and anyone looking to restore or enhance the performance and reliability of their BMW 318 or Z3 engine. It supports high-performance applications and long-term engine durability.
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