What is the compressed thickness of this head gasket?

The compressed operating thickness of this Multi-Layer Steel (MLS) head gasket is 0.036 inches. The gasket itself has a .070 inch uncompressed thickness.

Does this gasket require any sealant?

No, Cometic MLS head gaskets are designed to provide maximum sealing performance without the need for additional sealants. The Viton coating on the outer layers helps ensure a proper seal.

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

Viton is a heat-resistant rubber material that can withstand high temperatures, up to 482°F (250°C). It's used on the outer layers of this gasket to meet the demands of harsh sealing environments and ensure reliable performance.

Specifications

Brand: Cometic Gasket
Part #: C5804-070
UPC: 191070140625

Cometic GM L42/L61 Gen-1/2 ECOTEC .070in MLS Cylinder Head Gasket - 89mm Bore

Name: Cometic GM L42/L61 Gen-1/2 ECOTEC .070in MLS Cylinder Head Gasket - 89mm Bore
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-gm-l42-l61-gen-1-2-ecotec-070in-mls-cylinder-head-gasket--t14-806869
Price: 151.73 USD
Availability: BackOrder

$151.73

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 L42/L61 Gen-1/2 ECOTEC .070in MLS Cylinder Head Gasket - 89mm Bore. This multi-layer steel gasket offers improved sealing for high-output engines.

Key Features

Fits 2000-2008 Chevrolet, Oldsmobile, Pontiac, and Saturn vehicles.
Multi-Layer Steel (MLS) construction offers increased strength and corrosion resistance.
Outer layers are coated with heat-resistant Viton rubber for improved sealing.
Designed for an 89mm bore and a .070-inch compressed thickness.
No additional sealants are required for installation.
Suitable for sealing aluminum heads to aluminum blocks or 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

Cometic Gasket is known for making well-built sealing components, and this Multi-Layer Steel (MLS) head gasket is a prime example. It’s designed for GM L42 and L61 Gen-1/2 ECOTEC engines, featuring an 89mm bore and a .070-inch thickness. This gasket is built to handle the demands of higher output engines, ensuring a solid seal between your cylinder head and block.

What makes this gasket stand out is its construction. It’s made from multiple layers of stainless steel, which gives it strength and resistance to corrosion. The outer layers are coated on both sides with Viton, a heat-resistant rubber material that can handle temperatures up to 482°F (250°C). This coating helps it seal effectively against different materials, like aluminum heads to cast iron blocks, and it doesn't require any additional sealants. The center layer is uncoated stainless steel, allowing for precise thickness control.

This gasket fits a range of vehicles, including popular models like the Chevrolet Cavalier, Cobalt, and Saturn Ion. It's a solid option when you need reliable sealing for your ECOTEC engine build.