What is the compressed thickness of this head gasket?

The compressed operating thickness for this Cometic MLS head gasket is 0.098 inches. This measurement is important for ensuring proper valve-to-piston clearance and compression ratios.

Does this gasket require any sealant?

No, Cometic MLS head gaskets are designed to provide a maximum seal without the need for any additional sealants. The multi-layer steel construction and Viton coating create a robust seal on their own.

What does '.030in' mean for this head gasket?

The '.030in' designation indicates that this gasket is 0.030 inches undersize compared to a standard bore size. This is often used in engine rebuilding to achieve specific bore dimensions or clearances.

Specifications

Brand: Cometic Gasket
Part #: C5747-030
UPC: 191070138769

Cometic Chevrolet ZL1 Mark-IV Big Block V8 .030in MLS Cylinder Head Gasket - 4.300in Bore

Name: Cometic Chevrolet ZL1 Mark-IV Big Block V8 .030in MLS Cylinder Head Gasket - 4.300in Bore
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-chevrolet-zl1-mark-iv-big-block-v8-030in-mls-cylinder-hea-t14-805100
Price: 108.99 USD
Availability: BackOrder

$108.99

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Fits 1969 Chevrolet Camaro. Cometic .030in undersize MLS head gasket with 4.300in bore for your Big Block V8.

Key Features

Fits 1969 Chevrolet Camaro and Corvette.
Cometic MLS (Multi-Layer Steel) head gasket.
Features embossed outer layers coated with heat-resistant Viton.
Designed for a 4.300 inch bore.
This gasket is 0.030 inch undersize.
Compressed operating thickness is 0.098 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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Will it fit your car?

Fits these vehicles

Chevrolet Camaro 1969
Chevrolet Corvette 1969

About this part

Product Details

When you're rebuilding the top end of your 1969 Chevrolet Camaro's ZL1 Mark-IV Big Block V8, getting the cylinder head gaskets right is crucial for a solid seal. This Cometic Multi-Layer Steel (MLS) gasket is built to handle the demands of a high-output engine, ensuring your combustion chambers stay sealed tight.

This gasket is constructed with 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 and works well with different head and block materials, including aluminum and cast iron. The compressed thickness is 0.098 inches, and this particular gasket is 0.030 inches undersize with a 4.300-inch bore, designed to fit your specific engine build.

Because these are MLS gaskets, they don't require any additional sealants, making installation more straightforward. They are designed to withstand the forces created by different metal combinations, like aluminum heads on cast iron blocks, and offer a reliable seal for your performance engine.