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

This Cometic head gasket features a 4.540 inch bore and a thickness of .084 inches. These dimensions are critical for proper sealing in your specific Mark IV Big Block V8 application.

What is the advantage of the Viton coating on this gasket?

The Viton rubber coating on both sides of the gasket helps it meet the demands of harsh sealing environments and various surface finishes. It's also heat resistant up to 482°F, ensuring a reliable seal under high temperatures.

Does this gasket come with any hardware or sealant?

This product is for the cylinder head gasket only. It is recommended to consult the manufacturer's installation instructions for any additional hardware or sealant requirements for your specific engine build.

Specifications

Brand: Cometic Gasket
Part #: C5330-084
UPC: 191070124502

Cometic Chevrolet Mark-IV Big Block V8 .084in MLS Cylinder Head Gasket - 4.540in Bore

Name: Cometic Chevrolet Mark-IV Big Block V8 .084in MLS Cylinder Head Gasket - 4.540in Bore
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-chevrolet-mark-iv-big-block-v8-084in-mls-cylinder-head-ga-t14-805819
Price: 163.97 USD
Availability: BackOrder

$163.97

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 .084in MLS Cylinder Head Gasket - 4.540in Bore. Built with multiple stainless steel layers and Viton coating for a strong seal.

Key Features

Fits 1965-1990 Chevrolet vehicles with Mark IV Big Block V8 engines.
Multi-Layer Steel (MLS) construction offers increased strength and rebound.
Stainless steel layers resist corrosion and handle demanding conditions.
Features a 4.540 inch bore and .084 inch thickness.
Embossed outer layers are coated on both sides with heat-resistant Viton rubber.
Viton coating is effective up to 482°F (250°C).

⚠️ 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

No-fit, no charge. Wrong part? Send it back, free return label.

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About this part

Product Details

If you're working on a Chevrolet Mark IV Big Block V8 engine, this Cometic Multi-Layer Steel (MLS) cylinder head gasket is a solid choice for sealing your combustion chambers. It's designed with a 4.540 inch bore and a .084 inch thickness, making it suitable for a wide range of these powerful V8s, including applications in models like the Chevrolet Impala, C10 Pickup, and Corvette from the mid-60s through the late 80s and early 90s.

This gasket is constructed from three to five layers of stainless steel. Cometic uses stainless steel because it's strong, can rebound well under pressure, and resists corrosion. The outer layers are coated on both sides with a Viton rubber material. This coating is heat resistant up to 482°F and helps the gasket seal effectively in tough conditions and on various surface finishes, ensuring a reliable seal for your engine rebuild.