What is the bore size and thickness of this head gasket?

This Cometic head gasket has a bore size of 4.150 inches and a thickness of .071 inches. These dimensions are specific to the GM LT1/LT4 Gen-5 V8 engines.

What does the HP shim technology do?

The HP shim technology increases the clamping force around the combustion chamber. This is designed to improve the sealability of the head gasket, especially on open deck blocks.

What is the outer layer of the gasket coated with?

The embossed outer layers of this head gasket are coated with Viton. Viton is a material known for its resistance to heat and oil, contributing to a more robust seal.

Specifications

Brand: Cometic Gasket
Part #: C15203-071
UPC: 191070549329

Cometic GM LT1/LT4 V8 Gen-5 .071in MLX Cylinder Head Gasket - 4.150in Bore

Name: Cometic GM LT1/LT4 V8 Gen-5 .071in MLX Cylinder Head Gasket - 4.150in Bore
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-gm-lt1-lt4-v8-gen-5-071in-mlx-cylinder-head-gasket-4-150i-t14-403640
Price: 134.73 USD
Availability: BackOrder

$134.73

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Fits 2017-2018 Chevrolet Corvette. Cometic .071in MLX head gasket with 4.150in bore for LT1/LT4 V8 Gen-5 engines, improving sealability.

Key Features

Fits 2017-2018 Chevrolet Corvette.
Designed for GM LT1/LT4 Gen-5 Small Block V8 engines.
Features HP shim technology to increase clampload around the combustion chamber for improved sealability.
Embossed outer layers are coated with Viton for enhanced sealing and durability.
Has a thickness of .071 inches and a bore size of 4.150 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

If you're rebuilding the top end of your 2017-2018 Chevrolet Corvette's LT1 or LT4 Gen-5 V8 engine, a reliable head gasket is crucial for a proper seal. This Cometic MLX head gasket is specifically designed for these modern GM small-block V8s, ensuring your engine can handle the demands of performance driving.

This gasket features Cometic's HP shim technology, which is engineered to increase the clamping force around the combustion chamber. This is particularly important for open deck blocks, as it creates a stronger seal and helps prevent leaks under pressure. The outer layers are coated with Viton, a material known for its resistance to heat and oil, further enhancing the gasket's durability and sealing capability.

With a thickness of .071 inches and a bore size of 4.150 inches, this gasket is built to match the specifications of your LT1 or LT4 engine. It's a well-built component that helps ensure your engine rebuild is done right, providing a solid seal for years to come.