Engines and Components› Cylinder Heads and Components

Cometic Gasket

Cometic Buick 3800 Series II/III V6 .120in MLS Cylinder Head Gasket - 3.840in Bore - LHS

$451.93

SKU: C006 C5720-120

In Stock
In Stock
Ships by Jun 19
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Cometic C5720-120 is a Multi-Layer Steel (MLS) cylinder head gasket designed for Buick 3800 Series II and III V6 engines. It features a compressed operating thickness of 0.120 inches and a Viton rubber coating on its outer stainless steel layers. This gasket provides maximum sealing performance for high-output engines and does not require 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

BrandCometic Gasket
Part NumberC006 C5720-120

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