Search by number: 2010 Ford E-350 Super Duty 6.0L 8 Cyl Diesel Alternator ProAmp 8445 $154.00 each OPTIONS: w/o Dual Alternator Ford type unit 110 Amps ProAmp 8307 $167.00 each OPTIONS: Ford type unit 135 Amps Dual or Single Alt System: Top ProAmp 8477 $179.00 each OPTIONS: Dual Alt Sys: Bottom Ford type unit 120 Amps ProAmpN 8307N $196.00 each OPTIONS: Ford type unit 135 Amps Dual or Single Alt System: Top ProAmpN 8445N $204.00 each OPTIONS: w/o Dual Alternator Ford type unit 110 Amps ProAmpN 8477N $225.00 each OPTIONS: Dual Alt Sys: Bottom Ford type unit 120 Amps 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