Search by number: 1997 GMC G Series Vans 7.4L 8 Cyl Alternator ProAmp 8206-5 $100.00 each OPTIONS: 105 Amps; Oval Plug; Vin J ProAmp 8203-5 $140.00 each OPTIONS: 124 Amps; Rectangle Plug; Vin J ProAmpN 8206-5N $138.00 each OPTIONS: 105 Amps; Oval Plug; Vin J ProAmpN 8203-5N $157.00 each OPTIONS: 124 Amps; Rectangle Plug; Vin J 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