Review on ACDelco Professional ACK070834 Serpentine Drive Belt Tensioner Kit: Optimal Performance and Long-lasting Durability by John Fuentes

New idler worked well but idlers were defective. The OEM had a thick inner race in the bearing, which this kit replaces with stock bearings and a bushing. I have no problem with this other than the bushings don't go all the way through the bearings and the load stays off center. To top it off, the inner diameter of the bushings is custom, so the only way to get the right ones is to make them yourself. I would not use this set again.