Search by number: 2001 Pontiac Aztek 3.4L 6 Cyl Alternator ProAmp 13865 $112.00 each OPTIONS: Standard 105 Amp ProAmp 13866 $116.00 each OPTIONS: Optional 125 Amp ProAmpN 13866N $204.00 each OPTIONS: Optional 125 Amp ProAmpN 13865N $267.00 each OPTIONS: Standard 105 Amp 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