Bissell Style 1 and 4 Upright Canister 3550 Series Belt (Pack of 2) This is an O.E.M. Authorized part Fits various Bissell models Oem part number 32035 This is a Bissell replacement part Part Number 32035 This is an O.E.M. part Includes 2 belts For use with BISSELL Vacuums Works with Model #s: 3554, 3553 When do I replace the belt? If the vacuum is not cleaning as well as it had before or the brush roll has stopped turning, you may have to change the belt. To change the belt, please refer to your models user guide for installation instructions.