What is the compressed thickness of this head gasket?

This Cometic Multi-Layer Steel head gasket has a compressed operating thickness of 0.036 inches. The gasket itself is specified as a .040 inch gasket before compression.

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

Viton is a heat-resistant rubber material that can withstand temperatures up to 482°F (250°C). It's used on the outer layers of this gasket to ensure a reliable seal in demanding engine environments and to handle various surface finishes.

Do I need to use any sealant with this head gasket?

No, Cometic Multi-Layer Steel (MLS) head gaskets are designed to provide maximum sealing performance on their own and do not require any additional sealants.

Specifications

Brand: Cometic Gasket
Part #: C5226-040
UPC: 191070545635

Cometic GM LGD/LZ4/LZ8/LZ9/LZE/LZG High Value .040in MLS Cylinder Head Gasket - 101mm Bore - LHS

Name: Cometic GM LGD/LZ4/LZ8/LZ9/LZE/LZG High Value .040in MLS Cylinder Head Gasket - 101mm Bore - LHS
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-gm-lgd-lz4-lz8-lz9-lze-lzg-high-value-040in-mls-cylinder--t14-804284
Price: 109.86 USD
Availability: BackOrder

$109.86

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Fits 2006-2008 Chevrolet Impala. Cometic Multi-Layer Steel head gasket with a 101mm bore and .040in thickness for reliable sealing.

Key Features

Fits 2006-2008 Chevrolet Impala.
Multi-Layer Steel (MLS) construction offers increased strength and corrosion resistance.
Outer layers are embossed and coated with Viton, a heat-resistant elastomer rated up to 482°F (250°C).
Provides a reliable seal without requiring additional sealants.
Designed to handle the demands of high-output engines and dissimilar metal pairings.
Features a 101mm bore and a compressed operating thickness of 0.036 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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Will it fit your car?

About this part

Product Details

If you're rebuilding the top end of your 2006-2008 Chevrolet Impala, this Cometic Multi-Layer Steel (MLS) cylinder head gasket is a solid option. It's designed to handle the demands of modern engines, providing a strong seal between your cylinder head and engine block without needing any extra sealants.

This gasket is built with multiple layers of stainless steel for increased strength and corrosion resistance. The outer layers are coated with Viton, a heat-resistant rubber material that can handle high temperatures up to 482°F (250°C) and works well with different surface finishes. The center layer is stainless steel and can be varied in thickness; in this case, it's set to provide a compressed operating thickness of 0.036 inches, with a bore size of 101mm, making it a .040 inch gasket.

MLS gaskets are a good choice for pairings like aluminum heads to aluminum blocks or aluminum heads to cast iron blocks, as they can manage the shearing forces that can occur between dissimilar metals.