Search by number: 2003 Ford F Series Pickups 7.3L 8 Cyl Diesel Alternator ProAmp 8316 $139.00 each OPTIONS: w/Ambulance Pkg Primary Alt ProAmp 8317 $150.00 each OPTIONS: w/Ambulance Pkg Auxiliary Alt ProAmpN 8316N $175.00 each OPTIONS: w/Ambulance Pkg Primary Alt ProAmpN 8317N $194.00 each OPTIONS: w/Ambulance Pkg Auxiliary Alt 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