Proform Lifestyler 255589 Treadmill Drive Belt Genuine Original Equipment Manufacturer (OEM) Part This part is compatible with models including; 831248434,831248333,831248330 Drive belt 255589 rotates the front roller, which drives the walking belt on the platform Genuine Original Equipment Manufacturer (OEM) part. Compatible Brands: Proform This drive belt (part number 255589) is for treadmills Unplug the treadmill before installing this part