Search by number: 1965 Porsche 911 2.0L Alternator ProAmp 14280 $103.00 each OPTIONS: 55 Amp SEV Unit ProAmp 13025 $103.00 each OPTIONS: 55 Amp Bosch 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