Gaskets and Seals› Engine Gaskets and Seals
Cometic Gasket
Cometic BMW 1766/1990cc 72-88 90mm .027 inch MLS Head Gasket M10 Engine
SKU: C006 C4293-027
Moderate — 2–4 hours
Description
Part #: C4293-027
Comprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0.027". Cometic MLS (Multi-Layer Steel) Head Gaskets provide maximum sealing performance for todays high output engines and require no sealants. MLS gaskets are ideal for both aluminum heads to aluminum blocks and aluminum heads to cast iron blocks. They can withstand the shearing force created by the two materials. MLS gaskets have increased strength because they are comprised of multiple layers of stainless steel; which also creates the ability to rebound and resist corrosion. The outer layers are embossed and coated on both sides with Viton (a flour elastomer rubber based material that is heat resistant to 250 C/ 482 F). Viton is designed to meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes. The center or shim layer is uncoated stainless steel, which can be varied to accommodate multiple thickness requirements.
BMW M10B18/M10B20 .027in. MLS Cylinder Head Gasket | 90mm Bore
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
MIA's Description
The gasket is constructed from multiple layers of stainless steel, with the outer layers coated in Viton rubber for enhanced sealing performance in high-output applications. This construction provides increased strength and resistance to corrosion, while the Viton coating ensures durability in demanding environments.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Cometic Gasket |
| Part Number | C006 C4293-027 |
Videos
Reviewing Cometic's MLX Head Gaskets
Understanding MLS Head Gaskets
Choosing The Right Head Gasket For Your Performance Engine Application
Performance Head Gaskets EXPLAINED!
Gasket Material and Surface Roughness—and How they Relate
How To Create The Everlasting Engine Gasket And One Common Mistake To Avoid
Should You Use Copper Gasket Spray? | Tech Minute
Installing Cylinder Head Gaskets :: Modern Muscle X
Common Mistakes Made With Automotive Head Gaskets | Counter Intelligence
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.
View Full Return Policy