Search by number: 2007 Buick Rendezvous 3.5L 6 Cyl Alternator ProAmp 13866 $116.00 each OPTIONS: 125 Amp Valeo Unit ProAmpN 13866N $204.00 each OPTIONS: 125 Amp Valeo 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