What is the compressed thickness of this head gasket?

This Cometic MLS head gasket has a compressed operating thickness of 0.071 inches. This thickness is achieved through the center shim layer, which is varied to meet specific sealing requirements.

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 and do not require any additional sealants. The Viton coating on the outer layers ensures a reliable seal.

What types of engine block and head materials is this gasket suitable for?

This gasket is ideal for combinations of aluminum heads with either aluminum blocks or cast iron blocks. The multi-layer steel construction can withstand the shearing forces that can occur between different metal types.

Specifications

Brand: Cometic Gasket
Part #: C5248-071
UPC: 191070123161

Cometic Chevy Gen1 Small Block V8 .071in MLS Cylinder Head Gasket - 4.165in Bore - 18/23 Degree Head

Name: Cometic Chevy Gen1 Small Block V8 .071in MLS Cylinder Head Gasket - 4.165in Bore - 18/23 Degree Head
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-chevy-gen1-small-block-v8-071in-mls-cylinder-head-gasket--t14-803568
Price: 131.62 USD
Availability: BackOrder

$131.62

On Backorder

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Cometic Chevy Gen1 Small Block V8 .071in MLS Cylinder Head Gasket - 4.165in Bore - 18/23 Degree Head. Ensures a solid seal for high-output engines.

Key Features

Fits a wide range of Chevrolet Gen-1 Small Block V8 vehicles.
Multi-Layer Steel (MLS) construction offers increased strength and corrosion resistance.
Outer layers are coated on both sides with heat-resistant Viton rubber.
Designed for aluminum heads to aluminum blocks and aluminum heads to cast iron blocks.
Features a 4.165-inch bore and includes steam holes.
Compressed operating thickness is 0.071 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 rebuilding the top end of your Chevrolet Gen-1 Small Block V8, getting the cylinder head gaskets right is crucial for a strong seal. This Cometic Multi-Layer Steel (MLS) gasket is built to handle the demands of higher-output engines, ensuring a reliable seal between your cylinder head and block without needing extra sealants.

Cometic uses multiple layers of stainless steel for increased strength and resistance to corrosion. 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 uncoated stainless steel, and its thickness can be varied to meet different sealing requirements, like this one at 0.071 inches compressed thickness. This construction is ideal for combinations of aluminum heads with aluminum or cast iron blocks, as it can manage the shearing forces that can develop between different metals.

This gasket is designed with a 4.165-inch bore and includes steam holes, fitting a wide range of vehicles from the 1980s and early 90s, including models like the Chevrolet Camaro, Corvette, and GMC C1500. It's a well-built component for anyone looking to ensure a proper seal during their engine build.