NA/NBSeller listing
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View listing at Planet Miata; opens in a new tabMiata · Buyer's guide
NA/NB Miata Stock Fuel Injectors and Matched Rebuilt Sets
US-market 1990-1993 NA6, 1994-1997 NA8, 1999-2000 NB1, and 2001-2005 NB2. Mazdaspeed and performance sizing are excluded from stock replacement advice.
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
Listed priceSee seller for current price
View listing at Treasure Coast Miata; opens in a new tabNA/NBSeller listing
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View listing at Mossmiata; opens in a new tabNA/NBSeller listing
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View listing at Mossmiata; opens in a new tabNA/NBSeller listing
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View listing at Mike's Miata Parts; opens in a new tabWhat you need to know
Match NA6, NA8, NB1, or NB2 stock injector family and connector. Buy a tested/matched set with new seals when possible. Rail, regulator, return-system architecture, Mazdaspeed injectors, and upgrade sizing remain outside this narrowed page.
OEM numbers
Stock injector color/application branches checked by the specialist catalog are 1990-1993 blue, 1994-1997 tan, 1999-2000 red, and 2001-2005 purple. No unverified stock flow-rate table or universal injector number is published.Supersession
No stock injector supersession chain is claimed. Performance injector SKUs are not replacements for stock calibration without tuning.
Fitment
Match NA6, NA8, NB1, or NB2 stock injector family and connector. Buy a tested/matched set with new seals when possible. Rail, regulator, return-system architecture, Mazdaspeed injectors, and upgrade sizing remain outside this narrowed page.
Aftermarket options
Professionally cleaned, flow-tested, spray-tested, matched OEM sets are the preferred used/rebuilt path. DeatschWerks performance products are shown only to explain that larger injectors require calibration and are not stock substitutes.
Before you buy
This page does not provide upgrade sizing. Larger injectors require ECU calibration and supporting fuel-system checks. Match the stock year/engine family; do not order by body color alone when markings or history are uncertain.
Research and fitment sources
Supersede reviewed 8 unique research sources for this guide. 5 also appear above as a seller or official action and are not repeated here; 3 additional citations follow.
Research last verified .