Search by number: 2015 Chevrolet Express 4500 6.0L 8 Cyl Alternator ProAmp 8292 $135.00 each OPTIONS: 4 Pin Regulator Plug; Delco unit 145 Amps; Standard ProAmp 11364 $153.00 each OPTIONS: All; 105 Amps ProAmp 8301 $154.00 each OPTIONS: 2 Pin; Optional 160 Amps ProAmpN 8292N $149.00 each OPTIONS: 4 Pin Regulator Plug; Delco unit 145 Amps; Standard ProAmpN 8301N $182.00 each OPTIONS: 2 Pin; Optional 160 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