Mopar gas gauges operate at a certain ohm range and you must get a sending unit that has the same ohm range. I don't remember what Mopar's ohm range is, you can search and look it up. When you purchase a sending unit they should tell you the ohm range of the sender so get the one that matches the Mopar gauge ohm range. If the vender doesn't list their ohm range for their sender keep looking for one that does.