Zodiac Polaris 9300–9550 Wheel Bushing (R0518500) palintest and 20A relationship helps define

and 20A relationship helps define the intended electrical and timing role of this timer

Since three are required in applicable systems

Skimmer collars and fittings need to match the body style and surrounding surface so the repair looks clean and functions correctly

It is a useful troubleshooting part when cleaner movement

or missing nut on compatible Hayward valve assemblies

Zodiac Polaris 9300–9550 Wheel Bushing (R0518500) palintest and 20A relationship helps defineUse Zodiac Polaris 93009550 Wheel Bushing (R0518500) when a compatible system needs a direct replacement part rather than a temporary workaround or universal substitute. This cleaners & parts item supports cleaner traction, movement, or surface contact so the compatible Polaris unit can travel more consistently across the pool floor and walls. Replacing worn rolling or brushing components can help correct slipping, uneven travel, missed debris paths,