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View listing at Mazda Parts; opens in a new tabMiata · Buyer's guide
NA/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.
Current seller options
WHERE TO BUY
Open an exact listing, then confirm fitment, stock, price, and shipping with the seller before ordering.
Seller links checked . Prices and availability can change.
NA/NBSeller listing
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View listing at Mossmiata; opens in a new tabNA/NBSeller listing
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View listing at PartsGeek; opens in a new tabNA/NBSeller listing
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View listing at Gomiata; opens in a new tabWhat you need to know
Read the underhood label and compressor tag; confirm refrigerant, oil, hose/manifold, connector and VIN. Recover refrigerant lawfully and diagnose leak/electrical/clutch/contamination scope.
OEM numbers
Checked 1994-2000 OEM compressor NC10-61-450NB catalog also lists NA75-61-450. Current replacements split TV12/SCSA06C and production ranges.Supersession
No R12-to-R134a universal compressor chain is asserted. Compressor, hoses/manifold, oil, receiver-drier, expansion device and refrigerant-era conversion are separate compatibility decisions.
Fitment
Read the underhood label and compressor tag; confirm refrigerant, oil, hose/manifold, connector and VIN. Recover refrigerant lawfully and diagnose leak/electrical/clutch/contamination scope.
Aftermarket options
OEM/reman/new compressors exist. A retrofit needs compatible oil, seals/fittings and service procedure; do not vent refrigerant or mix oil/refrigerant blindly.
Before you buy
Identify R12 versus R134a, compressor label, hose/manifold and production/VIN. Refrigerant must be recovered lawfully. Internal failure can require drier/condenser/line cleanup beyond a compressor.
Research and fitment sources
Supersede reviewed 7 unique research sources for this guide. 4 also appear above as a seller or official action and are not repeated here; 3 additional citations follow.
Research last verified .