Search by number: 1998 Dodge Ram Pickups 3.9L 6 Cyl Alternator ProAmp 13742 $104.00 each OPTIONS: 136 Amp NDenso Unit ProAmp 13354 $106.00 each OPTIONS: 90 Amp NDenso Unit 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