Search by number: 2012 BMW X3 3.0L 6 Cyl Alternator ProAmp 11496 $305.00 each OPTIONS: 215 Amps; To 03/2012; Turbocharged ProAmp 42012 Call for Price OPTIONS: 170 Amps; Std; Naturally aspirated ProAmp 42013 Call for Price OPTIONS: 210 Amps; Opt; Naturally aspirated ProAmp 42029 Call for Price OPTIONS: 210 Amps; From 03/2012; Turbocharged 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