Search by number: 1989 Audi 100 & 100 Quattro 2.3L Alternator ProAmp 14972 $92.00 each OPTIONS: Standard 90 Amp Bosch Unit ProAmp 13242 $112.00 each OPTIONS: Optional 110 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