Gaskets and Seals› Engine Gaskets and Seals

Cometic Gasket

Cometic BMW M20 2.5L/2.7L 85mm .040 inch MLS Head Gasket 325i/525i

$269.74

SKU: C006 C4394-040

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Special Order
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Cometic Gasket C4394-040 is an MLS (Multi-Layer Steel) cylinder head gasket designed for BMW M20B25 and M20B27 engines. It features a compressed thickness of .040 inches and an 85mm bore. The gasket is constructed with multiple embossed layers of stainless steel, with the outer layers coated in Viton rubber for enhanced sealing.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandCometic Gasket
Part NumberC006 C4394-040

Videos

M20 Head Gasket comparison! Which is best?

M20 Head Gasket comparison! Which is best?
Reviewing Cometic's MLX Head Gaskets

Reviewing Cometic's MLX Head Gaskets
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Cometic MLS Head Gaskets
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E36 MLS vs Cutring Headgaskets for Boost (and Why Im Switching)
Cylinder Head Rebuild, BMW M20B27

Cylinder Head Rebuild, BMW M20B27
Choosing The Right Head Gasket For Your Performance Engine Application

Choosing The Right Head Gasket For Your Performance Engine Application
Performance Head Gaskets EXPLAINED!

Performance Head Gaskets EXPLAINED!
Cometic Gaskets presented by J&P Cycles.

Cometic Gaskets presented by J&P Cycles.
Understanding MLS Head Gaskets

Understanding MLS Head Gaskets
BMW E30 M20 6 Cylinder Head Gasket Replacement

BMW E30 M20 6 Cylinder Head Gasket Replacement

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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