What is the main advantage of using an MLS head gasket?

Multi-Layer Steel (MLS) head gaskets offer superior sealing performance for high-output engines compared to traditional composite gaskets. They are stronger, more resistant to corrosion, and can handle greater shearing forces between different block and head materials.

Does this gasket require any sealant during installation?

No, Cometic MLS head gaskets are designed to provide a maximum seal without the need for additional sealants. The Viton coating on the outer layers ensures a tight seal against the block and head surfaces.

What does the '.030in' in the product name signify?

The '.030in' indicates that this gasket is 0.030 inches oversize. This is typically used when engine cylinders have been bored out during a rebuild to match the new bore size.

Specifications

Brand: Cometic Gasket
Part #: C5739-030
UPC: 191070079741

Cometic Chevrolet 4.3L Gen-1 90 Degree V6 .030in MLS Cylinder Head Gasket - 4.060in Bore

Name: Cometic Chevrolet 4.3L Gen-1 90 Degree V6 .030in MLS Cylinder Head Gasket - 4.060in Bore
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-chevrolet-4-3l-gen-1-90-degree-v6-030in-mls-cylinder-head-t14-805296
Price: 111.49 USD
Availability: BackOrder

$111.49

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Cometic Chevrolet 4.3L Gen-1 V6 .030in MLS Head Gasket. Built for high-output engines, this gasket ensures a solid seal.

Key Features

Fits a wide range of Chevrolet and GMC vehicles from 1985-1996.
Multi-Layer Steel (MLS) construction offers increased strength and corrosion resistance.
Outer layers are coated with heat-resistant Viton rubber for a reliable seal.
Designed for a 4.060 inch bore and is 0.030 inch oversize.
Compressed operating thickness is 0.036 inches.
No additional sealants are required 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

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About this part

Product Details

If you're rebuilding the top end of your Chevrolet 4.3L Gen-1 V6, getting the cylinder head gasket right is crucial for a good seal. This Multi-Layer Steel (MLS) gasket from Cometic is built to handle the demands of higher-output engines, offering a reliable seal without needing extra sealants.

Cometic uses multiple layers of stainless steel for strength and corrosion resistance. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing environments and various surface finishes. This construction helps these gaskets withstand the forces between aluminum and cast iron blocks, making them suitable for a wide range of engine builds. The compressed thickness is 0.036 inches, and this particular gasket is designed for a 4.060-inch bore and is 0.030 inches oversize.

This gasket fits a wide variety of Chevrolet and GMC trucks and vans from the mid-80s to the mid-90s, including models like the Chevrolet Astro, C1500, and GMC G1500. Always refer to the manufacturer's installation instructions for proper torque sequences and procedures.