The brush roller does not work with NZ801UKT 40, the Hepa & Foam filters can work! An NZ801UKT40 is discontinued! (Brush Roller only fit NZ801UK, NZ801UKT, Not fit NZ801UKT40, NV801UK/NV801UKT). Compatible Models: Shark NV680 Filter Fits Shark Rotator Professional Lift-away Series NV680 NV681 NV682 NV683 NV800uk NV800, NV800W, NV801,UV810, NZ801,AZ910, AX910, NV620 Models Upright Vacuum Cleaner.
eBay