Cometic C4569-040 MLS Head Gasket .040" 85 mm for 1994-2000 Mazda Miata Protege

Vehicle Fitment

• 1994-1997, 1999-2000 Mazda Miata (BP-4W / BP-ZE, 1.8L DOHC)
• 1990-1998 Mazda Protege (BP-4W / BP-ZE, 1.8L DOHC)
• 1991-1996 Ford Escort GT & LX-E (1.8L DOHC equivalent BP engine)
• 1991-1996 Mercury Tracer LTS (1.8L DOHC equivalent BP engine)
• 1995-1997 Kia Sephia GS / LS / RS (1.8L DOHC equivalent)
• Additional Mazda 323 (1994) 1.8L DOHC BP engine

Fitment Notes

• Must be 1.8L DOHC "BP"-series engine (BP-4W / BP-ZE or equivalent) - not for SOHC, 1.6L, or VVT BP-Z3 engines
• Drivetrain: RWD for Miata; FWD for Protege, Escort, Tracer, Sephia
• Does **not** fit newer Miata NB-series beyond 2000 with head design changes, unless confirmed

Features

• Multi-Layer Steel (MLS) construction for superior sealing under higher pressures
• Embossed outer stainless steel layers coated with Viton on both faces
• 85.00 mm bore size matching OEM BP cylinder bore
• .040 in compressed thickness (≈1.016 mm) ideal for near-stock compression or slight deck machining
• No additional sealant required when heads/blocks are properly prepared
• Designed for both aluminum head to aluminum block, or aluminum head to cast iron block sealing surfaces
• Durable against thermal cycling, warpage, and cyclic loading
• Provides consistent sealing even under mildly boosted or high-output street engines

Specifications

• Bore Size: 85.00 mm
• Compressed Thickness: 0.040 in (≈1.016 mm)
• Material: Multi-Layer Steel, 3 layers stainless steel (with outer Viton coating)
• Engine Type: 1.8L DOHC "BP"-series (BP-4W / BP-ZE or equivalent)
• Position: Cylinder Head Gasket (head-to-block interface)
• Drivetrain: FWD and RWD depending on vehicle application (see fitment above)

Included Components

• 1x Cometic MLS head gasket C4569-040

Product Description

The Cometic C4569-040 is a high quality Multi-Layer Steel (MLS) head gasket engineered for the BP-series 1.8L DOHC engines (BP-4W / BP-ZE) in various Mazda, Ford, Mercury, and Kia vehicles spanning 1990-2000. With an 85 mm bore and a compressed thickness of .040 in, it's ideal for rebuilds, mild performance upgrades, or applications requiring precise sealing after light machining. Its embossed outer stainless steel layers, coated in Viton, ensure excellent resistance to oil, coolant, and combustion gas leakage under demanding conditions.

This gasket is suited for stock or near-stock builds, or engines lightly modified, provided the head and block surfaces are clean and flat. The .040 in thickness preserves compression ratio, making it a good choice where maintaining engine performance is important. For engines needing reduced compression or with significant material removal (machined heads or deck work), thicker gasket options may be more appropriate. Fitment is confirmed through 2000 for the listed models; **2025 unconfirmed** for newer variants.