Heating & A/C for Miata NA / NB
3 matching parts guides.
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NA/NB Miata Blower Motor, Resistor and Fan-Speed Diagnosis
1990-2005 NA/NB Miata. Resistor applications split around 1995/1997, and NB motor/housing selection must be checked by year.
View guideNA/NB Miata A/C Compressor and Refrigerant-Era Identification
1990-2005 NA/NB Miata air conditioning. 1990-1993 R12-era systems and 1994-up R134a-era systems are not mixed; 2004 production/VIN compressor changes require confirmation.
View guideNA and NB Miata Under-Dash HVAC Modules: Heater, Evaporator and Blower Case Identification
US/LHD 1990-1997 NA and 1999-2005 NB Mazda MX-5 Miata factory under-dash heater, evaporator/cooling and blower housing modules. Select each module separately by recipient VIN/generation, production and factory A/C equipment; verify installed/service identity, core or valve interfaces, doors/linkages/cables, firewall ports, drain, ducts, wiring and written contents. Exclude the US 1998 gap, NC/ND, non-US/RHD assumptions, universal under-dash systems, unsupported whole-case or NA/NB interchange, contaminated or cracked donors and any unqualified refrigerant or hot-coolant service.
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