What is the compressed thickness of this head gasket?

The compressed operating thickness of this Cometic MLS head gasket is 0.080 inches. This measurement is critical for ensuring proper compression ratios and valve-to-piston clearance.

Do I need to use any sealant with this head gasket?

No, Cometic MLS head gaskets are designed to provide maximum sealing performance on their own and do not require additional sealants. The Viton coating on the outer layers ensures a tight seal.

What types of engine block and head combinations is this gasket suitable for?

This gasket is ideal for both aluminum heads to aluminum blocks and aluminum heads to cast iron blocks. Its multi-layer steel construction can withstand the shearing forces created by these different material combinations.

Specifications

Brand: Cometic Gasket
Part #: C5332-080
UPC: 191070083113

Cometic Chevy BB 4.375in Bore .080 inch MLS 396/402/427/454 Head Gasket

Name: Cometic Chevy BB 4.375in Bore .080 inch MLS 396/402/427/454 Head Gasket
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-chevy-bb-4-375in-bore-080-inch-mls-396-402-427-454-head-g-t14-4378393
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 Chevy BB .080" MLS Head Gasket for 4.375" bore engines. Built with multiple stainless steel layers and Viton coating for maximum sealing.

Key Features

Fits a wide range of Chevrolet and GMC Big Block V8 engines from 1991-2000.
Multi-Layer Steel (MLS) construction offers increased strength and corrosion resistance.
Outer layers are coated with heat-resistant Viton for a reliable seal.
Compressed operating thickness is 0.080 inches.
Features a 4.375 inch bore diameter.
Designed for aluminum heads to aluminum blocks and aluminum heads to 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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About this part

Product Details

This is a Cometic Multi-Layer Steel (MLS) head gasket designed for Chevy and GMC Big Block V8 engines. It's built to handle the demands of high-output applications, offering a robust seal between the cylinder head and the engine block. The gasket has a 4.375-inch bore and a compressed thickness of 0.080 inches, making it suitable for a range of GM Gen-V/VI Big Block V8 engines.

Cometic's MLS design 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 various surface finishes, ensuring a reliable seal without the need for additional sealants. This construction is ideal for combinations of aluminum heads with aluminum blocks, or aluminum heads with cast iron blocks, as it can manage the shearing forces that can occur between dissimilar metals.

This gasket fits a wide variety of Chevrolet and GMC trucks and vans from the early 1990s, including models like the C1500, C2500 Suburban, and Express 3500. It's a well-built component for rebuilding or upgrading your engine's top end.