Waterway Crystal Water Cartridge Manifold Plug (519-4320) mpindustries Genuine Balboa Water Group pump

Genuine Balboa Water Group pump replacement

or gone missing during service

75 HP pump applications

The no-overlay format adds practical value because the visible face can be selected separately to match the exact original button configuration

the larger system often loses its core operating function

Waterway Crystal Water Cartridge Manifold Plug (519-4320) mpindustries Genuine Balboa Water Group pumpThe Waterway 519 4320 cartridge manifold plug is designed for compatible Crystal Water cartridge filter systems. A manifold plug like this is an important service part because it helps complete and seal the manifold area properly, supporting correct assembly and dependable filter operation. Small internal components can have an outsized effect on maintenance quality, especially in filtration systems where a missing or damaged plug can interfere with