Search by number: 1990 Mazda RX-7 1.3L Alternator ProAmp 13237 $104.00 each OPTIONS: wo/Turbo ProAmp 13337 $157.00 each OPTIONS: w/Turbo ProAmpN 13237N $155.00 each OPTIONS: wo/Turbo ProAmpN 13337N $159.00 each OPTIONS: w/Turbo 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