Polaris R0838400 OEM Quattro Right Gearbox check valve Drain plugs are installed at

Drain plugs are installed at the lowest point of pool equipment housings to allow water to be drained during:

Slide valve internals are exposed to constant water pressure

swimmable condition—often within 24 hours when used correctly

The wall coupling is the connection point that delivers pressurized water from the booster system to the cleaner

or sanitizer readings

Polaris R0838400 OEM Quattro Right Gearbox check valve Drain plugs are installed atWhen your Polaris Quattro P40 or P40 Sport stops brushing effectively on one side, the issue is often not the brush itselfits the gearbox driving it. The Polaris Quattro P40 Sport Right Side Brush Gearbox (R0838400) is a genuine OEM replacement designed to restore proper brush rotation, debris agitation, and balanced cleaning performance. This gearbox transfers drive power to the right side brush, allowing it to scrub stubborn debris from pool