NA/NBSeller listing
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View listing at Treasure Coast Miata; opens in a new tabMiata · Buyer's guide
NA/NB Miata Alternator Identification and Replacement
US-market 1990-1993 NA6, 1994-1997 NA8, 1999-2000 NB1, and 2001-2005 NB2. Match year, connector, pulley, output, and transmission/application notes in the exact catalog.
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 Mossmiata; opens in a new tabNA/NBSeller listing
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View listing at Mossmiata; opens in a new tabNA/NBSeller listing
Listed price$196.02
View listing at Gomiata; opens in a new tabNA/NBSeller listing
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View listing at Finditparts; opens in a new tabWhat you need to know
Order within the 1990-1993, 1994-1997, 1999-2000, or 2001-2005 branch after matching connector, pulley/grooves, case mounting, output and transmission notes. Diagnose belt, cable, grounds, battery, and charging voltage before replacement.
OEM numbers
Checked aftermarket references include Hitachi ALR0030 for 1999-2000 and ALR0040 for 2001-2005. Exact Mazda/reman numbers differ by year and applicationno universal 1990-2005 alternator number is claimed.Supersession
No cross-generation supersession chain is claimed. Remanufacturer numbers identify their own applications and do not prove Mazda interchange.
Fitment
Order within the 1990-1993, 1994-1997, 1999-2000, or 2001-2005 branch after matching connector, pulley/grooves, case mounting, output and transmission notes. Diagnose belt, cable, grounds, battery, and charging voltage before replacement.
Aftermarket options
New and remanufactured exact-application units are available. A reman unit can require a refundable core; included pulley and regulator details must be checked before purchase.
Before you buy
A battery warning lamp does not prove the alternator is bad. Check battery state, belt tension, B+ cable, grounds, fuse links and charging voltage. Catalog/application pages and active carts are dated observations, not guaranteed inventory.
Research and fitment sources
Supersede reviewed 9 unique research sources for this guide. 5 also appear above as a seller or official action and are not repeated here; 4 additional citations follow.
Research last verified .