Search by number: 2006 Ford F-350 Super Duty 6.0L 8 Cyl Diesel Alternator ProAmp 8479 $149.00 each OPTIONS: 110 Amps; Single Alternator System ProAmp 8478 $165.00 each OPTIONS: 135 Amps; Top Unit; Dual Alternator System ProAmp 8308 $165.00 each OPTIONS: To 12-05-05; 110 Amps; Dual Alternator System Bottom Unit ProAmp 8477 $179.00 each OPTIONS: From 12-05-05; 120 Amps; Dual Alternator System Bottom Unit ProAmpN 8479N $194.00 each OPTIONS: 110 Amps; Single Alternator System ProAmpN 8478N $199.00 each OPTIONS: 135 Amps; Top Unit; Dual Alternator System ProAmpN 8308N $209.00 each OPTIONS: To 12-05-05; 110 Amps; Dual Alternator System Bottom Unit ProAmpN 8477N $225.00 each OPTIONS: From 12-05-05; 120 Amps; Dual Alternator System 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