Search by number: 2004 Ford F-250 Super Duty 6.0L 8 Cyl Diesel Alternator ProAmp 8306 $156.00 each OPTIONS: 110 Amps; Single Alternator System ProAmp 8308 $165.00 each OPTIONS: 110 Amps; Bottom Unit; Dual Alternator System ProAmp 8307 $167.00 each OPTIONS: 135 Amps; Top Unit; Dual Alternator System ProAmpN 8307N $196.00 each OPTIONS: 135 Amps; Top Unit; Dual Alternator System ProAmpN 8308N $209.00 each OPTIONS: 110 Amps; Bottom Unit; Dual Alternator System ProAmpN 8306N $222.00 each OPTIONS: 110 Amps; Single Alternator System 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