Universal Fit: G52 Mechanism Compatible for Polaris 180, 280, 380 Pool Cleaner Replacement G52 Backup Valve. Works For: Compatible for Polaris Pool Cleaner Models 480 Pro, 3900 Sport, Vac-Sweep 380, Vac-Sweep 280. About Installation: When the new gear is installed, the water outlet needs to be aligned with the water outlet of the shell. When the shell cover is returned, it needs to be tightly closed. If it is not tightly closed, the gear may not operate well. May Cause The Gear To Not Work: If it is stuck due to sand or the like, remove the gear, clean the sand and install it again; The gear is impacted by high-pressure water flow because the sand is stuck, this situation will make the gear no longer work. Specifics: Condition: 100% New for Polaris G53 180 280 380 Material: plastic colour: white Package Contents: 1 x G52 Spool Replacement Parts Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.