What is the compressed thickness of this head gasket?

When properly installed and compressed, this Cometic head gasket has an operating thickness of 0.040 inches. This is a standard size for many 4A-GE engine builds.

What does the Viton rubber coating on the outer layers do?

The Viton rubber coating on the outer layers of the stainless steel helps create a more effective seal against the cylinder head and engine block. Viton is chosen for its resistance to heat and oil, which is important in the high-temperature environment of an engine.

Is this gasket suitable for all 4A-GE engines?

This specific gasket is designed for the 20-valve version of the 4A-GE engine and features an 81mm bore. Always confirm your engine's valve count and bore size before ordering.

Specifications

Brand: Cometic Gasket
Part #: C4604-040
UPC: 191070037338

Cometic Toyota 4A-GE .040in MLS Cylinder Head Gasket - 81mm Bore - 20 Valve

Name: Cometic Toyota 4A-GE .040in MLS Cylinder Head Gasket - 81mm Bore - 20 Valve
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-toyota-4a-ge-040in-mls-cylinder-head-gasket-81mm-bore-20--t14-806970
Price: 106.52 USD
Availability: BackOrder

$106.52

On Backorder

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Fits 1988-1991 Toyota Corolla. Cometic MLS head gasket, 0.040in thick with 81mm bore for 20-valve 4A-GE engines.

Key Features

Fits 1988-1991 Toyota Corolla and 1990-1992 Geo Prizm.
Cometic Multi-Layer Steel (MLS) head gasket.
Features an 81mm bore, suitable for the 4A-GE engine.
Designed for 20-valve cylinder heads.
Compressed operating thickness is 0.040 inches.
Outer layers are coated with Viton rubber for improved sealing.

⚠️ 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?

Fits these vehicles

Geo Prizm 1990-1992
Toyota Corolla 1988-1991

About this part

Product Details

If you're rebuilding the top end of your 1988-1991 Toyota Corolla with the 4A-GE engine, this Cometic Multi-Layer Steel (MLS) head gasket is a solid choice. It's specifically made to fit the 20-valve version of that engine and features an 81mm bore, which is the standard size for this application. This gasket is designed to provide a reliable seal between your cylinder head and engine block, crucial for maintaining compression and preventing coolant and oil leaks.

Cometic builds these gaskets with multiple layers of stainless steel for strength and durability. The outer layers are coated with Viton rubber, a material known for its resistance to heat and oil, which helps create a tight seal even under demanding conditions. When compressed, this gasket measures 0.040 inches thick, a common specification for many 4A-GE builds. Using an MLS gasket like this one is a popular choice for engine rebuilds because it offers improved sealing compared to older gasket technologies.