Polaris 3900 Sport Wheel Sprocket Assembly w/ Bearing | 39-420 spo-disabled It directs water flow to

It directs water flow to multiple cleaning zones while maintaining proper alignment under pressure

Inspect collar tabs and riser alignment

Whether for new installs or upgrades

The system uses high-powered nozzle heads to remove dirt and other debris from areas the pool cleaner cannot reach and does exceptionally well with steps and corners

Polaris 3900 Sport Wheel Sprocket Assembly w/ Bearing | 39-420 spo-disabled It directs water flow toPolaris 3900 Sport Wheel Sprocket Assembly w Bearing (39 420) The wheel sprocket assembly w bearing is a replacement part made by Polaris. The same high grade plastic material was used to create the original factory part. It can perform the same way as well ensuring that you are purchasing a genuine OEM part. There are two of these sprockets that are needed to be able to give the cleaner the ability to move along the surface with the two bearings