What is the primary advantage of using a Multi-Layer Steel (MLS) gasket?

MLS gaskets, like this Cometic C5331-072, use multiple layers of stainless steel to provide superior strength and sealing compared to traditional composite gaskets. This construction helps them resist stretching and maintain a seal under high cylinder pressures and temperatures.

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

Viton is a high-performance synthetic rubber known for its excellent resistance to heat and harsh fluids. On this gasket, the Viton coating helps create a reliable seal against the engine block and cylinder head, even if the surfaces aren't perfectly smooth, and it can withstand high operating temperatures.

Does this gasket come with any hardware?

This product is for the cylinder head gasket only. It does not include head bolts or other installation hardware, which should be sourced separately if needed.

Specifications

Brand: Cometic Gasket
Part #: C5331-072
UPC: 191070028015

Cometic Chevrolet Mark-IV Big Block V8 .072in MLS Cylinder Head Gasket - 4.630in Bore

Name: Cometic Chevrolet Mark-IV Big Block V8 .072in MLS Cylinder Head Gasket - 4.630in Bore
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-chevrolet-mark-iv-big-block-v8-072in-mls-cylinder-head-ga-t14-805840
Price: 152.35 USD
Availability: BackOrder

$152.35

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 cylinder head gasket. .072in thickness, 4.630in bore. Built with multiple stainless steel layers and Viton coating for durability.

Key Features

Fits a wide range of Chevrolet Mark-IV Big Block V8 engines from 1965-1986.
Multi-Layer Steel (MLS) construction offers increased strength and durability.
Stainless steel layers resist corrosion and help maintain gasket integrity.
Outer layers are embossed and coated with heat-resistant Viton rubber.
Viton coating is effective up to 482°F (250°C).
Gasket thickness is .072 inches with a 4.630-inch bore diameter.

⚠️ 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.

Secure CheckoutFast Shipping631-982-0042

Will it fit your car?

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 built to seal your combustion chambers effectively. It's designed with a .072-inch thickness and a 4.630-inch bore, making it suitable for a wide range of classic Chevrolet V8 applications, including models like the Impala, Chevelle, and C10 pickups from the mid-60s through the late 70s.

This gasket uses three to five layers of stainless steel, which gives it strength and helps it resist corrosion and maintain its shape under pressure. The outer layers are treated with a special Viton rubber coating on both sides. Viton is known for its heat resistance, handling temperatures up to 482°F, and it helps create a solid seal even on less-than-perfect surface finishes, which can be common in older engines. This construction means you can expect a reliable seal that holds up to the demands of your Big Block.