Gaskets and Seals› Engine Gaskets and Seals

Cometic Gasket

Cometic Buick Stage I/Stage II V6 .070in MLS Cylinder Head Gasket - 3.860in Bore

$149.49

SKU: C006 C5691-070

In Stock
In Stock
Ships by Jun 15
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Cometic C5691-070 is a Multi-Layer Steel (MLS) cylinder head gasket designed for Buick Stage I/Stage II V6 engines with a 3.860-inch bore and 0.070-inch thickness. It features multiple embossed layers of stainless steel, with the outer layers coated in Viton rubber for enhanced sealing and heat resistance. This gasket provides maximum sealing performance for high-output engines and requires no sealants, making it ideal for use with aluminum or cast iron blocks.

Fitment

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Specifications

BrandCometic Gasket
Part NumberC006 C5691-070

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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