Also keep in mind that when you buy parts from AZ, NAPA, etc they sell varoius lines, some make more profit than others and as a result are 'preferred' and 'recommended' by the part store. Water pumps for example, they come in two broad types, new and rebuilt, they make more money on the rebuilts and as a result they push them more. Car Quest sells like three levels, rebuilt, new cheap and a more expensive model that is also new. When I put my new carquest in there was NO difference in the pump that was visible, had all the same stampings and other than being shiny could not see any differences. If in doubt get it from the dealer, you can't go wrong there. As a fact I do only use mopar and Jeep parts on alot of my jeeps, they fit, they work and they last at least as long as what was in there. Plugs, caps, rotors, wires, belt, idlers I only use OEM dealer supplied ever since I saw a difference between dealer supplied champion spark plugs and auto store supplied champion plugs, the auto store champions were visibly lighter construction with thinner components, looked like a totally different plug.