Search by number: 2017 Ford Flex 3.5L 6 Cyl Alternator ProAmp 11658 $199.00 each OPTIONS: Standard; 175 Amps; 6 groove pulley; Mits. ProAmp 11614 $265.00 each OPTIONS: Optional; 220 Amps; 6 groove pulley 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