Search by number: 1990 GMC Full Size Pickups 7.4L 8 Cyl Alternator ProAmp 7802-3 $96.00 each OPTIONS: C K - w/AC Option 105 Amp ProAmp 7273-12 $99.00 each OPTIONS: RV3 Models - Standard wo/AC ProAmp 7294-12 $117.00 each OPTIONS: RV3 Models - Standard w/AC ProAmp 7901-7 $121.00 each OPTIONS: RV3 Models - Option 120 Amp ProAmp 7127HO110 $254.00 each OPTIONS: Custom Built; 110 Amps; 15.1V; Replaces stock alternator with stock wiring ProAmp 7127HO110PFC $333.00 each OPTIONS: Custom Built; 110 Amps; 15.1V; 1 Groove billet pulley & fan ProAmpN 7802-3N $119.00 each OPTIONS: C K - w/AC Option 105 Amp ProAmpN 7294-12N $136.00 each OPTIONS: RV3 Models - Standard w/AC ProAmpN 7901-7N $202.00 each OPTIONS: RV3 Models - Option 120 Amp 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