What is the compressed thickness of this head gasket?

The compressed operating thickness of this Cometic MLS head gasket is 0.036 inches. This measurement is important for ensuring proper valve-to-piston clearance and compression ratios after installation.

Does this gasket require any special sealants?

No, this Cometic Multi-Layer Steel (MLS) head gasket is designed to provide maximum sealing performance without the need for additional sealants. The embossed and coated stainless steel layers create a reliable seal on their own.

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

Viton is a type of synthetic rubber that is highly resistant to heat, withstanding temperatures up to 482°F. It's used on the outer layers of this gasket to ensure a durable seal in demanding engine conditions and to handle various surface finishes.

Specifications

Brand: Cometic Gasket
Part #: C4574-070
UPC: 191070116309

Cometic 03+ Subaru EJ255/04-10 EJ257 101mm .070 inch MLS Head Gasket

Name: Cometic 03+ Subaru EJ255/04-10 EJ257 101mm .070 inch MLS Head Gasket
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-03-subaru-ej255-04-10-ej257-101mm-070-inch-mls-head-gaske-t14-4359915
Price: 84.15 USD
Availability: BackOrder

$84.15

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Cometic MLS head gasket for Subaru EJ255/EJ257 engines. .070 inch thickness, 101mm bore.

Key Features

Fits 2003+ Subaru EJ255 and 2004-2010 EJ257 engines.
Multi-Layer Steel (MLS) construction offers increased strength and corrosion resistance.
Outer layers are coated on both sides with Viton rubber for heat resistance up to 482°F.
Compressed operating thickness is 0.036 inches.
Features a 101mm bore and a 0.070 inch thickness.
No sealants are required for installation.

⚠️ 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 Subaru EJ255 and EJ257 engines, specifically for applications where you need a reliable seal. This gasket is built with multiple layers of stainless steel, giving it strength and the ability to resist corrosion. The outer layers are coated on both sides with Viton, a heat-resistant rubber material that can handle temperatures up to 482°F, making it suitable for demanding conditions and various engine block and head material combinations.

The compressed operating thickness of this gasket is 0.036 inches, and it features a 101mm bore with a thickness of 0.070 inches. This specific sizing is important for proper engine assembly and performance. Because it’s an MLS gasket, it doesn’t require any additional sealants, simplifying the installation process. This gasket fits a range of vehicles, including models like the Subaru Impreza, Forester, and Legacy, ensuring a solid option for many Subaru owners working on their engines.