What is the compressed thickness of this head gasket?

When properly installed and compressed, this head gasket has an operating thickness of .056 inches. This is the thickness after it has been torqued down to the engine specifications.

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

Viton is a type of heat-resistant rubber material that can withstand high temperatures, up to 482°F. It's used as a coating on the outer layers of the gasket to ensure a reliable seal in demanding engine conditions.

Does this gasket require any additional sealants?

No, this Cometic Multi-Layer Steel (MLS) head gasket is designed to provide maximum sealing performance on its own and does not require any additional sealants.

Specifications

Brand: Cometic Gasket
Part #: C4166-056
UPC: 191070101923

Cometic Toyota 4AG-GE 83mm .056 inch MLS Head Gasket

Name: Cometic Toyota 4AG-GE 83mm .056 inch MLS Head Gasket
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-toyota-4ag-ge-83mm-056-inch-mls-head-gasket-t14-426026
Price: 134.43 USD
Availability: BackOrder

$134.43

On Backorder — Expected to ship by Jul 4, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Cometic Toyota 4AG-GE MLS head gasket. Features Viton-coated stainless steel layers for reliable sealing on high-output engines.

Key Features

Fits a wide range of vehicles including Toyota Corolla, Toyota MR2, and many Ford models.
Multi-Layer Steel (MLS) construction offers increased strength and corrosion resistance.
Embossed outer layers are coated with Viton, a heat-resistant elastomer rated up to 482°F.
Designed for high-output engines and requires no additional sealants.
Suitable for sealing aluminum heads to aluminum blocks or aluminum heads to cast iron blocks.
83mm bore size and a compressed operating thickness of .056 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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About this part

Product Details

This Cometic Multi-Layer Steel (MLS) head gasket is built for the Toyota 4A-GE engine. It has a bore size of 83mm and a compressed thickness of .056 inches, making it suitable for a variety of vehicles including the Toyota Corolla and MR2, as well as many Ford models from the 70s and early 80s. MLS gaskets are a strong choice for high-output engines because they offer excellent sealing performance without needing additional sealants.

The gasket is constructed with multiple layers of stainless steel for increased strength and resistance to corrosion. The outer layers are embossed and coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482 degrees Fahrenheit. This coating is designed to perform well in harsh sealing environments and on various surface finishes, ensuring a solid seal between the cylinder head and the engine block, whether you're working with aluminum or cast iron components.