Gaskets and Seals› Engine Gaskets and Seals

Cometic Gasket

Cometic GM LSX LHS 4.15in Bore .040 inch MLX 4 Layer Head Gasket

$315.65

SKU: C006 C5703-040

In Stock
In Stock
Ships by Jun 10
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Cometic C5703-040 is a Multi-Layer Steel (MLS) cylinder head gasket designed for GM LSX Gen-4 small block V8 engines. This gasket features a 0.040-inch compressed thickness and a 4.165-inch bore size.

Constructed with MLX material, it offers durability and reliable sealing performance. It is sold individually.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandCometic Gasket
Part NumberC006 C5703-040

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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