What is the compressed thickness of this head gasket?

This Cometic head gasket has a compressed operating thickness of 0.036 inches. This measurement is important for ensuring proper compression ratio and valve-to-piston clearance after installation.

Does this gasket require any sealant?

No, Cometic MLS head gaskets are designed to provide maximum sealing performance on their own and do not require any additional sealants. The Viton coating on the outer layers helps create a reliable seal.

What is the bore size and type for this gasket?

This gasket features a 4.200 inch bore size with a round bore design and includes steam holes. It is specifically intended for use with 18/23 degree cylinder heads.

Specifications

Brand: Cometic Gasket
Part #: C5249-084
UPC: 191070123208

Cometic Chevy Gen1 Small Block V8 .084in MLS Cylinder Head Gasket - 4.200in Bore - 18/23 Degree Head

Name: Cometic Chevy Gen1 Small Block V8 .084in MLS Cylinder Head Gasket - 4.200in Bore - 18/23 Degree Head
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-chevy-gen1-small-block-v8-084in-mls-cylinder-head-gasket--t14-803576
Price: 143.45 USD
Availability: BackOrder

$143.45

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Cometic Gen 1 Small Block V8 MLS head gasket. Features Viton coating for maximum sealing performance.

Key Features

Fits a wide range of Chevrolet and GMC vehicles from 1980-1996.
Multi-Layer Steel (MLS) construction offers increased strength and corrosion resistance.
Outer layers are coated on both sides with heat-resistant Viton rubber.
Compressed operating thickness is 0.036 inches.
Bore size is 4.200 inches.
Designed for 18/23 degree cylinder heads with round bores and steam holes.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Will it fit your car?

About this part

Product Details

If you're rebuilding the top end of your Chevy Gen 1 Small Block V8, getting the cylinder head gaskets right is crucial for a solid seal. This Multi-Layer Steel (MLS) gasket from Cometic is built to handle the demands of high-output engines, whether you're pairing aluminum heads with an aluminum block or aluminum heads with cast iron. It's designed to provide maximum sealing performance without needing any extra sealants.

Cometic builds these gaskets with multiple layers of stainless steel, which not only adds strength but also helps them resist corrosion and rebound. The outer layers are coated on both sides with Viton, a heat-resistant rubber material that can handle tough sealing environments and various surface finishes. The center layer is stainless steel and can be varied in thickness; this particular gasket has a compressed thickness of 0.036 inches and a bore size of 4.200 inches, with steam holes and a round bore suitable for 18/23 degree heads.

This gasket fits a wide range of vehicles from the early 80s through the mid-90s, including popular models like the Chevrolet C10 and Camaro, as well as GMC trucks. It's a well-built option for anyone looking for reliable sealing in their engine build.