What is the compressed thickness of this head gasket?

This Cometic MLS head gasket has a compressed operating thickness of 0.040 inches. This measurement is critical for ensuring proper compression and sealing within the engine.

Does this head gasket require any sealant?

No, this Multi-Layer Steel (MLS) head gasket is designed to provide a maximum seal without the need for additional sealants. The embossed outer layers coated with Viton handle the sealing requirements.

What materials is this head gasket made from?

The gasket is constructed from multiple layers of stainless steel for strength and corrosion resistance. The outer layers are coated with Viton, a heat-resistant rubber material.

Specifications

Brand: Cometic Gasket
Part #: C4568-040
UPC: 191070005399

Cometic Mazda Miata inBPin Motor 1.8L DOHC 84mm .040in MLS Head Gasket

Name: Cometic Mazda Miata inBPin Motor 1.8L DOHC 84mm .040in MLS Head Gasket
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-mazda-miata-inbpin-motor-1-8l-dohc-84mm-040in-mls-head-ga-t14-245630
Price: 115.18 USD
Availability: BackOrder

$115.18

On Backorder — Expected to ship by May 29, 2026

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

Fits 1990-1998 Mazda Protege. Cometic MLS head gasket with Viton coating for a reliable seal.

Key Features

Fits 1990-1998 Mazda Protege.
Multi-Layer Steel (MLS) construction offers increased strength and corrosion resistance.
Outer layers are coated with Viton, a heat-resistant elastomer rated up to 482°F (250°C).
Designed for an 84mm bore and has a compressed thickness of 0.040 inches.
Suitable for sealing aluminum heads to aluminum blocks or aluminum heads to cast iron blocks.
Requires no additional sealants 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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Will it fit your car?

Fits these vehicles

Ford Escort 1991-1996
Mazda Miata 1994-1997, 1999-2000
Mazda Protege 1990-1998

About this part

Product Details

If you're rebuilding the top end of your 1990-1998 Mazda Protege, a solid head gasket is crucial for sealing the combustion chamber. This Multi-Layer Steel (MLS) gasket from Cometic is built to handle the pressures of your 1.8L DOHC engine.

This gasket uses multiple layers of stainless steel for increased strength and resistance to corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482°F (250°C). This construction means it seals well against both aluminum and cast iron blocks, and it doesn't require any additional sealants for installation. The compressed thickness is 0.040 inches with an 84mm bore, designed to match your engine's specifications.