Gaskets and Seals Engine Gaskets and Seals

Cometic Gasket

Cometic Mercury / Chevy Big Block 4.6in Bore .051 inch MLS Head Gasket

$295.62

SKU: C006 C5637-051

In Stock
In Stock
Ships by Jun 12
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Cometic C5637-051 is a Multi-Layer Steel (MLS) head gasket designed for Mercury and Chevy Big Block engines. It features a 4.6-inch bore and a compressed thickness of 0.051 inches.

Constructed with multiple embossed layers of stainless steel, this gasket has outer layers coated with Viton rubber for enhanced sealing and heat resistance up to 482°F. The MLS design provides increased strength, rebound ability, and corrosion resistance, making it suitable for both aluminum and cast iron block applications. It requires no additional sealants.

Fitment

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Specifications

BrandCometic Gasket
Part NumberC006 C5637-051

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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