Polaris Zodiac 3900 Rear Axle Block (39-430) safety Vacless Systems Elbow [Fit-10] (FIT-10)

Vacless Systems Elbow [Fit-10] (FIT-10) is a replacement elbow used with compatible Vacless vacuum release system installations

Installed in the proper control-box setup

so replacing the correct matching component helps preserve the original skimmer design

or no longer returns properly after an air signal

A tailpiece with split nut helps create a more service-friendly plumbing connection at the heater

Polaris Zodiac 3900 Rear Axle Block (39-430) safety Vacless Systems Elbow [Fit-10] (FIT-10)The 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