Maruha Metal Head Gasket · 1.8L BP Engine (Bead Type)
Maruha's metal head gasket for the BP 1.8L engine. After 25–30 years, original OEM composite head gaskets on NA8 and NB Miatas are at the end of their service life — or have already failed. Maruha's bead-type metal gasket provides superior sealing integrity, better thermal resistance, and long-term reliability for rebuilt or refreshed 1.8L engines. The correct choice for any serious engine build.
Specifications:
Bead-type metal construction — superior sealing and thermal resistance vs. OEM composite
Designed for BP 1.8L engine architecture
Required for engine rebuilds, head lifts, and any build involving head removal
Correct choice for Maruha cam, solid lifter, and stroker builds
Fitment: NA8 Miata 1994–1997 · NB Miata 1998–2005 · All BP 1.8L variants.
Made in Japan. Authorized Maruha import by Chikara Motorsports — North America's only official Maruha dealer.
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