Search by number: 2007 Ford F-350 Super Duty 6.0L 8 Cyl Diesel Alternator ProAmp 8479 $149.00 each OPTIONS: 110 Amps; Single System Alternator ProAmp 8478 $165.00 each OPTIONS: 135 Amps; Dual System Alternator Top Unit ProAmp 8477 $179.00 each OPTIONS: 120 Amps; Dual System Alternator Bottom Unit ProAmpN 8479N $194.00 each OPTIONS: 110 Amps; Single System Alternator ProAmpN 8478N $199.00 each OPTIONS: 135 Amps; Dual System Alternator Top Unit ProAmpN 8477N $225.00 each OPTIONS: 120 Amps; Dual System Alternator Bottom 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