ATIE 360, 380, 3900 Sport, ATV Pool Cleaners Wheel Ball Bearing 9-100-1108 Replacement for Polaris 360, 380, 3900 Sport, ATV Pool Cleaners Part No. 9-100-1108 (4 Pack)

I was doing an overhaul on my polaris 3900 sport after about 4 years of use. I replaced the original wheel bearings since they were almost 4 years old. These wheel bearings lasted about 11 months before completely failing. I also had to file them to get them to fit over the wheel shaft. They were not easy to install nor do they last.

Great value, but the outer diameter is slightly off, making install more of a force than drop in. Must apply a huge amount of force to get into the wheel housing, these run slightly larger than they should. Once in runs well

It is probably worth noting that these are aftermarket parts, not original Zodiac/Polaris parts.But who cares? The OEM parts fail with predictable regularity and cost much more.These fit and work just as well as the OEM parts. I can't imagine that they would be less durable because, as I said, the genuine OEM parts aren't that durable to begin with.

These will help tighten up the tension on the drive chain and keep the sweep tracking straight. I like these replacements.

This non Polaris part does not fit like the original, I ended up returning them. They are just slightly larger and do not fit well in the wheels.

I replaced the worn out berings in a Polaris pool sweep as well as other parts. Now it runs like new.

Easy to install perfect match.

Just replaced the bearings our polaris pool vacuum after the original bearings failed. Fits easy and works great. Wheels are turning again and cleaner is moving around perfectly.Who cares if it is OEM, the original only worked for about two years before failing.