What material is this head gasket made from?

This Cometic head gasket is constructed from Multi-Layer Steel (MLS). The outer layers are coated with Viton, a heat-resistant rubber material, while the center layer is stainless steel.

Do I need to use sealant with this head gasket?

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

What is the compressed thickness of this gasket?

The compressed operating thickness of this specific Cometic head gasket is 0.040 inches.

Specifications

Brand: Cometic Gasket
Part #: C5526-040
UPC: 191070044404

Cometic Chrysler 6.1L Alum Hemi 4.125in .040 thick MLS Head Gasket

Name: Cometic Chrysler 6.1L Alum Hemi 4.125in .040 thick MLS Head Gasket
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-chrysler-6-1l-alum-hemi-4-125in-040-thick-mls-head-gasket-t14-252065
Price: 106.53 USD
Availability: BackOrder

$106.53

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Fits 2005-2010 Chrysler 300. This Cometic Multi-Layer Steel head gasket is .040" thick with a 4.125" bore, designed for high-output 6.1L Hemi engines.

Key Features

Fits 2005-2010 Chrysler 300.
This is a Cometic Multi-Layer Steel (MLS) head gasket.
Features a 4.125 inch bore size.
Compressed operating thickness is 0.040 inches.
Outer layers are embossed and coated with Viton rubber for heat resistance.
Designed for aluminum heads to aluminum 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

This product is a Cometic Multi-Layer Steel (MLS) head gasket, specifically designed for Chrysler 6.1L Gen-3 Hemi engines with aluminum blocks. It has a bore size of 4.125 inches and a compressed thickness of .040 inches. MLS head gaskets are built with multiple layers of stainless steel, giving them increased strength and the ability to rebound and resist corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle demanding sealing environments and various surface finishes, making them ideal for sealing aluminum heads to aluminum or cast iron blocks.

The multi-layer steel construction means these gaskets don't require any additional sealants, simplifying installation. The center layer of stainless steel can be varied to achieve different thickness requirements, and in this case, it's set at .040 inches compressed thickness. This design is well-suited for high-output engines where sealing performance is critical.