What is the compressed thickness of this head gasket?

This Cometic head gasket has a compressed operating thickness of 0.036 inches. This is achieved through its multi-layer steel construction with a specific center shim layer.

Does this gasket require any sealant?

No, Cometic MLS head gaskets are designed to provide maximum sealing performance without the need for additional sealants. The Viton coating on the outer layers ensures a strong, reliable seal on its own.

What is the benefit of the Viton coating?

The Viton rubber coating on the outer layers is heat resistant up to 482°F (250°C). It's designed to meet the demands of harsh sealing environments, load conditions, and various surface finishes, ensuring a durable seal.

Specifications

Brand: Cometic Gasket
Part #: C5958-089
UPC: 191070145200

Cometic Ford Boss 302 .089in MLS Cylinder Head Gasket - 4.030in Bore

Name: Cometic Ford Boss 302 .089in MLS Cylinder Head Gasket - 4.030in Bore
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-ford-boss-302-089in-mls-cylinder-head-gasket-4-030in-bore-t14-807882
Price: 143.45 USD
Availability: BackOrder

$143.45

On Backorder

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

Fits 1969-1971 DeTomaso Mangusta. Cometic MLS head gasket with Viton coating for a strong seal.

Key Features

Fits 1969-1971 DeTomaso Mangusta, 1969-1971 Ford Mustang, and 1969-1970 Mercury Cougar.
Multi-Layer Steel (MLS) construction offers increased strength and corrosion resistance.
Outer layers are coated with heat-resistant Viton for a robust seal.
Designed for high-output engines and requires no additional sealants.
Suitable for mating aluminum heads to aluminum or cast iron blocks.
Features a 4.030 inch bore and a compressed thickness of 0.036 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

When you're rebuilding the top end of your 1969-1971 DeTomaso Mangusta, getting the cylinder head gasket right is crucial for a solid seal. This Multi-Layer Steel (MLS) gasket from Cometic is built to handle the demands of high-output engines, ensuring your combustion chambers stay sealed tight.

Cometic uses 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 varying surface finishes. This construction means the gasket doesn't need any extra sealants, and it's designed to work well with both aluminum and cast iron blocks, resisting the shearing forces that can occur between different metals. The center layer is stainless steel, and its thickness is varied to meet specific requirements, like the .089 inch thickness on this particular gasket, which is designed for a 4.030 inch bore.

This gasket is a well-built option for your Boss 302 engine, offering a reliable seal for your rebuild.