I went to my local Autozone this evening and asked for a part #457-180 thermostat for my trusty XR650R just like the BRP website recommends. The guy behind the counter said that they (Autozone) changed over their part number system about five months ago and that there was no cross over list! He asked what application it was for, and my response was an educated sounding "duhhhh...". Does anyone know the new number or what make and model of car it came from? Thanks! Ted K.