What is the advantage of a Multi-Layer Steel (MLS) head gasket?

MLS head gaskets are made of multiple layers of stainless steel, which offers increased strength and better resistance to corrosion compared to older gasket materials. They are also designed to rebound under pressure, helping to maintain a strong seal in demanding conditions.

What does the .040 inch thickness and 84mm bore mean for my engine?

The .040 inch thickness refers to the compressed height of the gasket, which is a specific dimension for this application. The 84mm bore is the diameter of the opening in the gasket, designed to match the cylinder bore of your Honda Prelude's B21A1 engine.

What is the heat resistance of the Viton coating on this gasket?

The Viton rubber coating on the outer layers of the gasket is heat resistant up to 250°C, which is equivalent to 482°F. This allows the gasket to maintain its sealing integrity under high engine temperatures.

Specifications

Brand: Cometic Gasket
Part #: C4586-040
UPC: 191070421403

Cometic Honda B21A1 .040in MLS Cylinder Head Gasket - 84mm Bore

Name: Cometic Honda B21A1 .040in MLS Cylinder Head Gasket - 84mm Bore
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-honda-b21a1-040in-mls-cylinder-head-gasket-84mm-bore-t14-808361
Price: 106.52 USD
Availability: BackOrder

$106.52

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Fits 1990-1991 Honda Prelude. Cometic MLS head gasket with .040in thickness and 84mm bore for reliable sealing.

Key Features

Fits 1990-1991 Honda Prelude.
This is a Multi-Layer Steel (MLS) head gasket.
Features an 84mm bore size.
The gasket is .040 inches thick.
Constructed with three to five layers of stainless steel for strength and corrosion resistance.
Outer layers are coated with heat-resistant Viton rubber material.

⚠️ 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) cylinder head gasket is a prime example. It's specifically made for the 1990 and 1991 Honda Prelude with the B21A1 engine, featuring an 84mm bore and a .040 inch thickness. This gasket is crucial for keeping your engine's combustion chambers sealed from the oil and coolant passages, which is essential for proper engine operation and longevity.

This gasket is constructed from three to five layers of stainless steel. Cometic chooses stainless steel because it offers increased strength, a good ability to rebound under pressure, and resistance to corrosion. The outer layers of the gasket are embossed and then coated on both sides with a Viton rubber material. This coating is designed to handle tough sealing environments and varying surface finishes, and it's heat resistant up to 482°F (250°C), making it suitable for the demands of your engine.