Polaris Zodiac 3900 Rear Axle Block (39-430) safety Use part number C86 to

Use part number C86 to help match this item to the correct cleaner model

Installed in the proper control-box setup

Useful for wall mount and board controller chemical feeder service

or no longer returns properly after an air signal

Useful when replacing a damaged or worn original grid

Polaris Zodiac 3900 Rear Axle Block (39-430) safety Use part number C86 toThe Polaris Zodiac Axle Block [3900 Rear] (39 430) is a replacement axle block for compatible Polaris and Zodiac pool cleaners. This component helps position and support the cleaner axle so the wheel assembly can track properly during normal operation. When an axle block becomes worn, cracked, or distorted, the cleaner may move unevenly, lose traction, or place extra stress on surrounding drive parts. Replacing the damaged block helps restore a more