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Cometic head gasket .070"/81mm: BMW M20B20 & M20B23 2.0/2.3L C4393-070

Cometic head gasket .070"/81mm: BMW M20B20 & M20B23 2.0/2.3L C4393-070
No Tax, Each £186.02 Taxed, Each £223.22
Stock Lead Time Typically 4-5 weeks
Free UK Delivery Available
.070" thick multi-layer shim steel 320/i 77-93,323i 77-86, 5....


Cometic part number: C4393-070
Gasket bore: 81mm
Gasket thickness: 0.070" (1.78mm)
Gasket type: multi-layer shim steel

Cometic MLS gaskets are comprised of multiple layers of stainless steel due to its increased strength, ability to rebound and resistance to corrosion. The outer layers of the gaskets are embossed and coated on both sides with Viton - a flouroelastomer rubber based material that is heat resistant to 250C / 482F. Viton is designed to meet the demands of a variety of harsh sealing environments, load conditions and surface finishes. The centre or shim layer is a uncoated stainless steel layer which can be varied to accommodate multiple thickness requirements. They provide maximum sealing performance for today’s high output engines and require no sealants. Ideal for aluminium heads to aluminium blocks and aluminium heads to cast iron blocks withstanding the shearing force created by the two materials. No need to re-torque, the embossing design of the MLS gasket promotes an even clamp load across the sealing surface allowing for measurable reduced bore distortion.

A surface finish of 50 microinches or finer is recommended for a proper gasket seal. Anything rougher may result in gasket failure.

BMW M20B20 (1990cc) & M20B23 (2316cc) engine
  • BMW E21 320/6 1979–1983
  • BMW E30 320i 1983–1992
  • BMW E12 520/6 1977–1981
  • BMW E28 520 1982–1984
  • BMW E28 520i 1982–1988
  • BMW E34 520i 1988–1990
  • BMW E21 323i 1977–1982
  • BMW E30 323i 1982–1985
Additional Information

Additional Information

Part No C4393-070
Fits Engine Type BMW M20B20/B23
Part Type Head Gasket
Product Group Gaskets & Seals
Stock Status Stock Lead Time Typically 4-5 weeks
Fits Engine Make BMW
Material Multi Layer Steel (MLS)
Thickness .070"
Brand Logo Cometic Gaskets
Free Shipping Free UK Delivery Available