Search by number: 2003 Ford Mustang 4.6L 8 Cyl Alternator ProAmp 8304 $133.00 each OPTIONS: Supercharged DOHC; Vin Y ProAmp 7781 $137.00 each OPTIONS: Aspired; DOHC; Vin R; Manual Transmission ProAmp 8252 $137.00 each OPTIONS: SOHC VIN X; 6G model ProAmp 8436 $164.00 each OPTIONS: Aspired; DOHC; Vin R; Automatic Transmission ProAmp 7781HD200 $375.00 each OPTIONS: 200 Amp; Custom Built ProAmpN 8252N $149.00 each OPTIONS: SOHC VIN X; 6G model ProAmpN 7781N $176.00 each OPTIONS: Aspired; DOHC; Vin R; Manual Transmission ProAmpN 8304N $194.00 each OPTIONS: Supercharged DOHC; Vin Y ProAmpN 8436N $225.00 each OPTIONS: Aspired; DOHC; Vin R; Automatic Transmission 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