I just couldn't think of the parts name while typing, so I just described it as, "the idler pulley that is used to remove your belt". I was hoping Armyrules2 would get the meaning. I too went through everything chasing my squeal and for sure the idler tension pulley was the culprit. I only replaced it when it finally broke. Ironically, the new pulley allowed the belt to run much more loose than the old one. They obviously were dissimilar parts. While chasing my squeal, I began to notice other Rangers, that I would meet in traffic, had the same squealing belt issue. I wondered if it could be corrected. Looks like it can.