Gaskets and Seals› Engine Gaskets and Seals
Cometic Gasket
Cometic Chevy BB Gen IV 396/402/427/454 H/G 4.320 inch Bore .027 inch MLS Head Gasket
SKU: C006 C5816-027
Easy — 1–2 hours
Description
This gasket is suitable for use with cast iron or aluminum heads and provides maximum sealing performance for high-output engines, requiring no additional sealants.
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 C5816-027 |
Videos
Reviewing Cometic's MLX Head Gaskets
PermaTorque MLS Head Gasket with NextGen Coating | Fel-Pro Gaskets
Inside Fel-Pro PermaTorque MLS Head Gaskets
Should You Use Copper Gasket Spray? | Tech Minute
Cometic Gaskets presented by J&P Cycles.
Gasket Material and Surface Roughness—and How they Relate
Summit Racing Show & Tell: SCE Gaskets Cylinder Head Gasket Design, Construction & Applications
How to Prepare Engine Surfaces for Gasket Installation
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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