Maytronics Dolphin Light Blue Brush w o Rings [Qty 2] (6101609 R2) darlly This Aladdin Generic Polaris PB4 This Aladdin Generic Polaris PB4 Booster Pump Go Kit 71 (GO KIT 71) is engineered for o rings applications The UltraPure 10 watt replacement bulb is designed for compatible UP350 and EUV3 applications where the UV lamp needs to be renewed Replacing brushes as a set is useful because it helps preserve balanced cleaner behavior rather than mixing old and new wear patterns A properly selected Maytronics pair helps restore traction and scrubbing behavior while supporting cleaner movement consistency across both sides of the machine