Search by number: 1999 Ford F Series Pickups 6.8L 10 Cyl Alternator ProAmp 7790 $108.00 each OPTIONS: F-250 thru F-550 Standard 95 Amp; 8 groove Pulley ProAmp 7764 $117.00 each OPTIONS: F-250 thru F-550; Optional 130 Amp; 6 groove pulley; plug 330 ProAmpN 7790N $168.00 each OPTIONS: F-250 thru F-550 Standard 95 Amp; 8 groove Pulley ProAmpN 7764N $176.00 each OPTIONS: F-250 thru F-550; Optional 130 Amp; 6 groove pulley; plug 330 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