Search by number: 1990 Mazda Miata 1.6L Alternator ProAmp 13227 $104.00 each OPTIONS: w/MT ProAmp 13432 $112.00 each OPTIONS: w/AT ProAmpN 13227N $188.00 each OPTIONS: w/MT Why is there more than one unit for my car? Look at the TECH SPECS when more than one unit is shown for your car. AMPS (ELECTRIC CAPACITY): must match you vehicle electric requirements. *** Call us if you are looking to increase your unit capacity! OE ALTERNATOR MANUFACTURER: It is recommended to match the Make of your alternator