Polaris Zodiac 3900 Wheel Sprocket Assembly with Bearing (39-420) filburmfg Matching the correct 23 square

Matching the correct 23 square foot specification and dimensional profile helps preserve intended fit and restore dependable filtration support in compatible systems

5-1/4 inch height

OEM Pentair/Sta-Rite inlet floor plate

This replacement is especially useful where one side of the system needs to thread directly into an existing fitting or housing while the other side remains slip-plumbed

true-union construction

Polaris Zodiac 3900 Wheel Sprocket Assembly with Bearing (39-420) filburmfg Matching the correct 23 squareThe wheel sprocket assembly with bearing is part of the Polaris 3900 drive system that helps transfer motion to the cleaner wheels. If the cleaner is slipping, binding, or failing to drive correctly, worn sprocket or bearing components may be involved. This replacement assembly helps restore the mechanical connection needed for smooth wheel operation. It is a valuable part for deeper 3900 cleaner repairs where traction and drive performance need to be