Polaris 3900 Sport Rear Axle Block Assembly | 39-430 Bio-Dex Phosphate Removers White finish designed to blend

White finish designed to blend with light‑colored pool surfaces

Includes O-ring for secure

5" Cleaning Head (Charcoal Gray)

The majority of the parts included with this assembly are black except for the restrictor disks which are blue and red

It is manufactured from the same high-grade plastic material that was used with the original factory part

Polaris 3900 Sport Rear Axle Block Assembly | 39-430 Bio-Dex Phosphate Removers White finish designed to blendPolaris 3900 Sport Rear Axle Block Assembly (39 430) The rear axle block assembly is a replacement part made by Polaris for the 3900 Sport. It is also made from the same high grade material used to make the original factory part. Making this a genuine OEM part you can trust. This axle assembly was designed to be one of two axle assemblys needed to house the internal parts as well as external parts that aid in the maneuverability of the cleaner. Such