Uprated cam belt tensioner bearings from Hill Engineering (replaces 145807 and 149791) Only sold as a set, one set would be both bearings.Notes:Outer Bearing carrier weight 128 grams. Stock bearings weighs 220 grams.Load rating of the uprated bearings are 17,920 Newtons.The stock bearing load rating is not disclosed by SKF, but during the development stage, we determined the stock load rating of 10,240 Newtons.