This repair kit can be used on most of the Whirlpool manufactured driers both gas and electric. Complete with two support rollers, a new belt and idler roller, this kit will correct many of the minor noises associated with failing rollers or idler roller. If your dyer has started to make a noticeable double thump sound all the time, then the rollers need to be replaced. Signs of a failing idler roller would be a high pitched chirping sound and you probably already know what happens when the belt breaks. A great kit if you just want to help keep your dryer running longer with some new wear components. The price of the kit is less than all the parts combined and is a suggested combination by many technicians.