What is the compressed thickness of this head gasket?

This Cometic Multi-Layer Steel head gasket has a compressed operating thickness of 0.066 inches. This thickness is achieved through its multi-layer stainless steel construction.

What type of engines is this gasket designed for?

This gasket is specifically designed for GM LS Gen-3/4 small block V8 engines, including popular models like the LS1, LS2, LS3, and LS6. It features a 4.000-inch bore.

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 reliable seal.

Specifications

Brand: Cometic Gasket
Part #: C5477-066

Cometic GM LS1 SB 4.000 inch Bore .066 inch MLS Head Gasket

Name: Cometic GM LS1 SB 4.000 inch Bore .066 inch MLS Head Gasket
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-gm-ls1-sb-4-000-inch-bore-066-inch-mls-head-gasket-t14-709882
Price: 131.62 USD
Availability: BackOrder

$131.62

On Backorder

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

Cometic GM LS1 SB MLS head gasket. Features Viton-coated stainless steel layers for high-output engines.

Key Features

Fits many GM LS Gen-3/4 small block V8 engines.
Features a 4.000 inch bore and .066 inch compressed thickness.
Constructed with multiple layers of stainless steel for increased strength and corrosion resistance.
Outer layers are embossed and coated with heat-resistant Viton rubber (up to 482°F/250°C).
Suitable for aluminum heads to aluminum blocks and aluminum heads to cast iron blocks.
Requires no additional sealants for installation.

⚠️ 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

Secure CheckoutFast Shipping631-982-0042

Will it fit your car?

About this part

Product Details

This Cometic Multi-Layer Steel (MLS) head gasket is built for GM LS Gen-3/4 small block V8 engines. It features a 4.000-inch bore and a compressed thickness of .066 inches, designed to handle the demands of high-output applications. This gasket is constructed from multiple layers of stainless steel, with the outer layers coated in heat-resistant Viton rubber, capable of withstanding temperatures up to 482°F (250°C).

The multi-layer steel design offers increased strength and resistance to corrosion, while the Viton coating ensures a reliable seal even under harsh conditions and varying surface finishes. These MLS gaskets are suitable for use with both aluminum and cast iron blocks, and they do not require any additional sealants, making installation more straightforward. The center shim layer is uncoated stainless steel and can be varied to meet different thickness requirements.

This gasket fits a wide range of GM vehicles, including models like the Chevrolet Camaro, Corvette, and Silverado. It's a well-built component for rebuilding or upgrading your LS engine.