Search by number: 1990 Geo Prizm 1.6L Alternator ProAmp 8106-7 $90.00 each OPTIONS: VIN 6 Delco Unit ProAmp 13240 $96.00 each OPTIONS: VIN 6 NDenso Unit ProAmpN 13240N $141.00 each OPTIONS: VIN 6 NDenso Unit 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