Search by number: 1997 GMC G Series Vans 4.3L 6 Cyl Alternator ProAmp 8206-5 $104.00 each OPTIONS: Standard 105 Amps; Oval Plug ProAmp 8203-5 $156.00 each OPTIONS: Optional 124 Amps; Rectangle Plug ProAmpN 8206-5N $139.00 each OPTIONS: Standard 105 Amps; Oval Plug ProAmpN 8203-5N $159.00 each OPTIONS: Optional 124 Amps; Rectangle Plug 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