Search by number: 2010 Ford F-550 Super Duty 6.4L 8 Cyl Diesel Alternator ProAmp 11291 $162.00 each OPTIONS: Nippondenso type unit 125 Amps 8 Groove Serpentine Belt Single Alternator System ProAmp 8522 $199.00 each OPTIONS: Ford type unit 130 Amps w/Dual Alternators Primary Secondary ProAmp 11290 $214.00 each OPTIONS: Nippondenso type unit 200 Amps 8 Groove Serpentine Belt w/Dual Alternators Primary Alternator ProAmpN 8522N $208.00 each OPTIONS: Ford type unit 130 Amps w/Dual Alternators Primary Secondary ProAmpN 11290N $284.00 each OPTIONS: Nippondenso type unit 200 Amps 8 Groove Serpentine Belt w/Dual Alternators Primary Alternator 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