What materials are used in this Cometic head gasket?

This gasket is constructed from multiple layers of stainless steel for strength and corrosion resistance. The outer layers are coated with Viton, a heat-resistant rubber material, to ensure a reliable seal.

Do I need to use any sealant with this head gasket?

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

What is the bore size and compressed thickness of this gasket?

This specific gasket has a bore size of 4.630 inches and a compressed operating thickness of 0.045 inches.

Specifications

Brand: Cometic Gasket
Part #: C5331-045
UPC: 191070015145

Cometic Chevrolet Mark-IV Big Block V8 4.630in Bore .045in MLS Cylinder Head Gasket

Name: Cometic Chevrolet Mark-IV Big Block V8 4.630in Bore .045in MLS Cylinder Head Gasket
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-chevrolet-mark-iv-big-block-v8-4-630in-bore-045in-mls-cyl-t14-311736
Price: 115.36 USD
Availability: BackOrder

$115.36

On Backorder

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

Cometic Chevrolet Mark-IV Big Block V8 head gasket. Features a .045in compressed thickness and 4.630in bore for high-output engines.

Key Features

Fits a wide range of Chevrolet vehicles including Bel Air, Impala, Camaro, and C10 Pickup models.
Multi-Layer Steel (MLS) construction offers increased strength and corrosion resistance.
Outer layers are coated with Viton, a heat-resistant rubber material, for superior sealing.
Designed for high-output engines and requires no additional sealants.
Features a 4.630-inch bore and a 0.045-inch compressed operating thickness.
Suitable for use with aluminum heads on aluminum or cast iron blocks.

⚠️ 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

This is the Cometic Multi-Layer Steel (MLS) cylinder head gasket for Chevrolet Mark-IV Big Block V8 engines. You get one well-built gasket, designed to seal your combustion chambers effectively. It features a 4.630-inch bore and a compressed operating thickness of 0.045 inches, making it suitable for a wide range of Chevrolet vehicles from 1965 through 1990, including models like the Impala, C10 Pickup, and Camaro.

Cometic builds these MLS gaskets using 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 tough sealing environments and various surface finishes without needing additional sealants. This construction is ideal for engines with aluminum heads paired with either aluminum or cast iron blocks, as it can manage the shearing forces that can occur between different metals.