What is the compressed thickness of this head gasket?

This Cometic MLS head gasket has a nominal thickness of .023 inches. When installed and compressed, it will measure 0.036 inches thick.

Do I need to use any sealant with this gasket?

No, Cometic MLS head gaskets are designed to provide maximum sealing performance on their own. They do not require any additional sealants for installation.

What is Viton coating and why is it used on this gasket?

Viton is a heat-resistant rubber material that can withstand high temperatures, up to 482°F (250°C). It's used on the outer layers of this gasket to ensure a reliable seal in demanding engine conditions.

Specifications

Brand: Cometic Gasket
Part #: C5273-023
UPC: 191070417161

Cometic Chevy Gen-1 Small Block V8 .023in MLS Cylinder Head Gasket - 4.200in Bore

Name: Cometic Chevy Gen-1 Small Block V8 .023in MLS Cylinder Head Gasket - 4.200in Bore
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-chevy-gen-1-small-block-v8-023in-mls-cylinder-head-gasket-t14-806176
Price: 97.74 USD
Availability: BackOrder

$97.74

On Backorder

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

Cometic Chevy Gen-1 Small Block V8 .023in MLS Head Gasket. Built for high output engines, it offers reliable sealing.

Key Features

Fits many 1980-1986 Chevrolet and GMC trucks, cars, and vans, as well as Avanti II, Checker Marathon, and Excalibur models.
Multi-Layer Steel (MLS) construction offers increased strength and corrosion resistance.
Outer layers are coated with heat-resistant Viton rubber for reliable sealing.
Designed for high output engines and does not require additional sealants.
Suitable for mating aluminum heads to cast iron blocks.
Features a 4.200 inch bore size and a 0.023 inch nominal thickness, with a compressed operating thickness of 0.036 inches.

⚠️ 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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About this part

Product Details

If you're working on a Chevy Gen-1 Small Block V8 engine, this Cometic Multi-Layer Steel (MLS) cylinder head gasket is a solid choice for rebuilding or upgrading. It's designed to handle the demands of higher output engines, ensuring a strong seal between your cylinder head and engine block. This gasket is built to fit a wide range of vehicles from the early 1980s, including popular models like the Chevrolet C10, Camaro, and GMC C1500.

Cometic uses multiple layers of stainless steel for increased strength and resistance to corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482°F (250°C). This construction means the gasket can handle the forces created when mating aluminum heads to cast iron blocks, and it doesn't require any additional sealants for installation. The center layer is stainless steel and can be varied to achieve different gasket thicknesses, with this particular gasket having a compressed thickness of 0.036 inches from its original 0.023-inch thickness.