What is the purpose of the HP shim technology in this gasket?

The HP shim technology is designed to increase the clamping force around the combustion chamber. This helps to improve the sealability of the head gasket, especially on open-deck engine blocks, ensuring a more reliable seal.

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

Viton is a type of synthetic rubber known for its excellent resistance to heat, oil, and other fluids. Coating the outer layers of the gasket with Viton helps to enhance its sealing performance and durability in the harsh environment of the engine.

What does the .051in thickness and 4.030in bore size mean for my engine?

The .051 inch thickness and 4.030 inch bore are specific dimensions designed to match the cylinder head and piston bore of compatible GM LS engines. Using the correct bore and thickness is essential for proper sealing and engine performance.

Specifications

Brand: Cometic Gasket
Part #: C15494-051
UPC: 191070522209

Cometic GM LS1/LS2/LS3/LS6 Gen-III/IV Small Block V8 .051in MLS Cylinder Head Gasket 4.030in Bore

Name: Cometic GM LS1/LS2/LS3/LS6 Gen-III/IV Small Block V8 .051in MLS Cylinder Head Gasket 4.030in Bore
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-gm-ls1-ls2-ls3-ls6-gen-iii-iv-small-block-v8-051in-mls-cy-t14-566950
Price: 97.74 USD
Availability: BackOrder

$97.74

On Backorder

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Cometic MLS head gasket for GM LS Gen-III/IV V8 engines. Features HP shim tech and Viton coating. Fits many vehicles.

Key Features

Fits many GM LS Gen-III/IV Small Block V8 engines.
Multi-Layer Steel (MLS) construction for durability.
Features HP shim technology to increase clampload around the combustion chamber.
Embossed outer layers are coated with Viton for improved sealing and resistance.
Designed with a 4.030 inch bore size.
Has a thickness of .051 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 GM LS Gen-III or Gen-IV small block V8, getting the cylinder head gaskets sealed properly is crucial for reliable performance. This Cometic Multi-Layer Steel (MLS) head gasket is built to handle the demands of these popular engines, ensuring a strong seal between the cylinder head and the engine block.

This gasket features Cometic's HP shim technology, which is designed to increase the clamping force around the combustion chamber. This is especially helpful for open-deck block designs, providing an improved seal to prevent leaks and maintain compression. The outer layers of the gasket are embossed and coated with Viton, a material known for its resistance to heat and oil, further enhancing its sealing capabilities and durability under operating conditions.

With a bore size of 4.030 inches and a thickness of .051 inches, this gasket is designed for a specific fit on a wide range of GM LS engines, including those found in vehicles like the Chevrolet Silverado, Corvette, and Cadillac CTS. It's a well-built component for anyone looking to ensure a solid seal during engine assembly or repair.