What is the compressed thickness of this head gasket?

When properly compressed during installation, this Cometic head gasket has an operating thickness of 0.098 inches. This is achieved through the multi-layer steel design and the specific thickness of the center shim layer.

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 helps create a reliable seal.

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

Viton is a type of heat-resistant rubber material that can withstand high temperatures, up to 482 F. It's used on the outer layers of this gasket to ensure a durable and reliable seal in demanding engine environments.

Specifications

Brand: Cometic Gasket
Part #: C5958-027
UPC: 191070145125

Cometic Ford Boss 302 .027in MLS Cylinder Head Gasket - 4.030in Bore

Name: Cometic Ford Boss 302 .027in MLS Cylinder Head Gasket - 4.030in Bore
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-ford-boss-302-027in-mls-cylinder-head-gasket-4-030in-bore-t14-807874
Price: 97.74 USD
Availability: BackOrder

$97.74

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 reliable sealing.

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 Viton, a heat-resistant elastomer rated up to 482 F.
Designed for a 4.030-inch bore and specific Ford Boss 302 engine configurations.
Requires no additional sealants for installation.
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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Will it fit your car?

Fits these vehicles

DeTomaso Mangusta 1969-1971
Ford Mustang 1969-1971
Mercury Cougar 1969-1970

About this part

Product Details

The outer layers of this Cometic Multi-Layer Steel (MLS) head gasket are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482 F. This gasket is built for the Ford Boss 302 engine with a 4.030-inch bore, designed to work with SVO heads and the M-6010-BOSS302 block.

MLS head gaskets are well-built for high-output engines because they use multiple layers of stainless steel. This construction gives them increased strength and the ability to rebound, which helps them resist corrosion. They seal well without needing any extra sealants, making them a solid choice for engines with aluminum heads paired to either aluminum or cast iron blocks, as they can handle the shearing forces that can occur between different metals. The center layer is stainless steel and can be varied in thickness to meet different engine build requirements.