The Polaris 9-100-1108 Wheel Bearing fits the Polaris 340, 360 and 380 automatic swimming pool cleaners. The Polaris 360 & 380 require a quantity of 8 bearings. Polars OEM Ball Bearing.
This part fixes the following symptoms: Loose wobbly wheels. When the bearings go out the wheel will become loose and wobble side to side.