Polaris 3900 Sport Bottom Housing (39-004)
The bottom housing is a replacement part made by Polaris. The same high-grade plastic material was used to make the original factory part. Making this a genuine OEM product.
This bottom housing was designed to be the housing unit for all of the internal parts. They give the cleaner its power and ability to clean the dirt, debris, and other forms of mulch off the surface of your pool. leaving behind a crystal clear look.
This part is gray and is located on the bottom of the cleaner. It has a big opening in the center of it which all the dirt and debris can be sucked up through via the WMS assembly and into the superbag. Also, it is held into place by 3 screws than can be removed via a Phillips head screwdriver.