• Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 85mm Bore (.098 inch) (C4348-098)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 85mm Bore (.098 inch) (C4348-098)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 85mm Bore (.098 inch) (C4348-098)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 85mm Bore (.098 inch) (C4348-098)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 85mm Bore (.098 inch) (C4348-098)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 85mm Bore (.098 inch) (C4348-098)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 85mm Bore (.098 inch) (C4348-098)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 85mm Bore (.098 inch) (C4348-098)
  • Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 85mm Bore (.098 inch) (C4348-098)
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Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 85mm Bore (.098 inch) (C4348-098)

Cometic MLS Head Gasket | BMW 318/Z3 (89-98) 85mm Bore (.098 inch) (C4348-098)

C4348-098

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$186.45 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 high-output engines. Constructed from multiple embossed layers of stainless steel with outer layers coated in Viton rubber, this gasket features a compressed operating thickness of 0.098 inches. It offers superior sealing capabilities without the need for sealants, making it ideal for demanding applications. The gasket's multi-layer steel design ensures enhanced strength and durability, effectively handling the shearing forces generated between aluminum heads and blocks or cast iron components. Its robust construction provides reliable performance under high pressure and temperature conditions, ensuring engine integrity and optimal operation.

This gasket is specifically designed to fit the BMW 318 and Z3 models equipped with M42 or M44 engines from 1989 to 1998. It is suitable for both aluminum and cast iron engine blocks, serving as a direct replacement for stock gaskets. The gasket is intended for use in high-performance and modified engines, where enhanced sealing is critical. Installation involves replacing the existing head gasket with this MLS component, which requires no additional sealants. The kit includes the MLS head gasket itself, ensuring a straightforward upgrade for enthusiasts and professionals seeking improved sealing and engine reliability in street or track applications.

Overview

Cometic Gasket Head Gasket

Fits BMW 318 and Z3 1989–1998 with 85mm Bore

Part #: C4348-098

Overview

The Cometic MLS (Multi-Layer Steel) Head Gasket is engineered to deliver superior sealing performance for high-output engines. Designed specifically for BMW 318 and Z3 models from 1989 to 1998 with an 85mm bore, this gasket is ideal for enthusiasts and professionals seeking reliable, durable engine sealing solutions. Crafted from multiple embossed layers of stainless steel with a Viton rubber coating on the outer layers, it provides excellent resistance to heat, pressure, and shearing forces. The compressed thickness of 0.098 inches ensures a precise fit, helping to maintain optimal compression and engine integrity under demanding conditions. Whether you're rebuilding or upgrading your engine, this gasket helps support consistent performance and longevity.

Key Features

This MLS head gasket combines advanced materials and thoughtful design to meet the needs of high-performance applications. Key features include:
  • Multiple embossed stainless steel layers for strength and durability
  • Outer layers coated with Viton rubber for enhanced sealing and chemical resistance
  • Designed to withstand the shearing forces between aluminum heads and blocks or cast iron components
  • Compressed thickness of 0.098 inches for a precise, reliable seal
  • No sealants required, simplifying installation and reducing potential leak points
  • Engineered to support high-output and modified engine setups

Construction & Design

The gasket's multilayer steel construction ensures maximum strength and flexibility, accommodating thermal expansion and contraction during engine operation. The Viton rubber coating on the outer layers enhances sealing capabilities and chemical resistance, making it suitable for demanding engine environments. Its precise machining and embossed layers contribute to a consistent, reliable seal that helps prevent leaks and maintain compression.

Installation & Fitment

This head gasket is designed as a direct replacement for OEM specifications on BMW 318 and Z3 models from 1989 to 1998 with an 85mm bore. Proper installation involves ensuring the mating surfaces are clean and flat, and torquing the cylinder head bolts to the manufacturer’s specifications. Its fitment and material properties support a straightforward installation process for experienced mechanics and DIY enthusiasts.

Ideal For

This gasket is perfect for engine rebuilds, performance upgrades, or high-mileage repairs on BMW 318 and Z3 vehicles. It supports high-performance driving and engine modifications by providing a reliable seal that withstands increased pressures and temperatures.
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