Search by number: 1998 BMW M3 3.2L Alternator ProAmp 13470 $103.00 each OPTIONS: 80 Amp Valeo Unit; Unthreaded ProAmp 13465T $103.00 each OPTIONS: 80 Amp Bosch Unit; Threaded mounting back hole ProAmp 13465 $107.00 each OPTIONS: 80 Amp Bosch Unit; Unthreaded ProAmp 13471 $141.00 each OPTIONS: 140 Amp Bosch Unit; Unthreaded ProAmp 13660 $172.00 each OPTIONS: 140 Amp Valeo Unit ProAmp 13471T $182.00 each OPTIONS: 140 Amp Bosch Unit; Threaded mounting back hole ProAmpN 13660N $228.00 each OPTIONS: 140 Amp Valeo Unit ProAmpN 13471N $267.00 each OPTIONS: 140 Amp Bosch Unit; Unthreaded 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