Gaskets and Seals Engine Gaskets and Seals

Cometic Gasket

Cometic Oldsmobile Gen-2 Rocket V8 .140in MLS Cylinder Head Gasket - 4.200in Bore

$276.93

SKU: C006 C5809-140

In Stock
In Stock
Ships by Jun 12
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Non-Returnable Item
INSTALL DIFFICULTY
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Easy — 1–2 hours

Description

The Cometic C5809-140 is a Multi-Layer Steel (MLS) cylinder head gasket designed for Oldsmobile Gen-2 Rocket V8 engines. It features multiple embossed layers of stainless steel with outer layers coated in Viton rubber for enhanced sealing.

This gasket has a compressed operating thickness of 0.098 inches and a bore size of 4.200 inches. The MLS construction offers increased strength, rebound capability, and corrosion resistance, making it suitable for applications with aluminum heads to aluminum blocks or aluminum heads to cast iron blocks.

Fitment

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Specifications

BrandCometic Gasket
Part NumberC006 C5809-140

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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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