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 create a more robust seal, particularly important for open deck engine blocks.

What does the Viton coating on the gasket do?

Viton is a type of synthetic rubber known for its excellent resistance to heat and various fluids. The coating on the outer layers of the gasket helps improve its sealing capabilities and durability in harsh engine conditions.

Is this gasket suitable for all GM LS engines?

This gasket is specifically designed for GM LS Gen-3 and Gen-4 small block V8 engines with a 4.190-inch bore. It's important to verify fitment for your specific engine application.

Specifications

Brand: Cometic Gasket
Part #: C5319-027
UPC: 191070124120

Cometic GM LS1 SB 4.190in Bore .027in MLS Head Gasket

Name: Cometic GM LS1 SB 4.190in Bore .027in MLS Head Gasket
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-gm-ls1-sb-4-190in-bore-027in-mls-head-gasket-t14-481095
Price: 97.74 USD
Availability: BackOrder

$97.74

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 .027in MLS head gasket with 4.190in bore. Features HP shim technology for improved sealing.

Key Features

Fits many GM LS Gen-3 and Gen-4 small block V8 engines.
Features a 4.190 inch bore and a .027 inch thickness.
Multi-Layer Steel (MLS) construction for durability.
Includes HP shim technology to increase clampload around the combustion chamber.
Embossed outer layers are coated with Viton for improved sealing and resistance.
Designed for open deck blocks to enhance sealability.

⚠️ 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

No-fit, no charge. Wrong part? Send it back, free return label.

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Will it fit your car?

About this part

Product Details

If you're rebuilding the top end of a GM LS Gen-3 or Gen-4 small block V8, getting the head gasket right is crucial for a solid seal. This Multi-Layer Steel (MLS) gasket from Cometic is built for that job, featuring a 4.190-inch bore and a .027-inch thickness. It's designed to handle the pressures and temperatures common in these powerful engines.

Cometic's HP shim technology is a notable feature here. It's designed to increase the clamping force around the combustion chamber, which helps ensure a tight seal, especially on open deck blocks. The outer layers of the gasket are embossed and coated with Viton, a material known for its resistance to heat and oil, further contributing to a reliable seal under demanding conditions.

This gasket fits a wide range of GM vehicles, including popular models like the Chevrolet Corvette, Camaro, and Silverado trucks, as well as Cadillac CTS and Buick LaCrosse. It's a well-built component for anyone looking to ensure a leak-free seal during their engine rebuild.