Showing specs for all NA & NB Miatas

Thermostat full-open temperature (NB1)

212 °F (100 °C)100°C {212°F}

Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure

Factory single-valve thermostat specification; this source does not use the NA8 main/sub-valve values. Inspect for opening at room temperature and for opening temperature and lift; replace as necessary. Repeated in technical data 01–50–2 (PDF313).

Applies to
  • NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.
  • Verified in: 1999 Mazda MX-5 Miata Workshop Manual