Polaris Zodiac 3900 Single-Side Wheel (39-401) miscelectrical and this generic version is

and this generic version is sized with a 7-7/8 inch inside diameter and 8-3/16 inch outside diameter using the O-215 reference

Replacing worn or outdated components with properly engineered parts helps restore system efficiency

A fresh overlay helps eliminate that uncertainty and gives the panel a more finished appearance

A quantity pack can help reduce reorder frequency and keep crews better prepared for repeated maintenance work

Polaris Zodiac 3900 Single-Side Wheel (39-401) miscelectrical and this generic version isThe Polaris 3900 relies on its wheel system to translate internal drive power into steady movement across the pool. This single side wheel is a direct replacement for service situations where an existing wheel is worn, damaged, or no longer helping the cleaner track correctly. Replacing a problem wheel can help restore the cleaners climbing ability, turning behavior, and overall coverage. It is a focused repair part that supports the larger drive