Hayward Heat Exchanger Cap Plug (HPX01023872) pumpmotors A topside overlay is useful

A topside overlay is useful because it restores the labeled user interface surface

A heat exchanger is useful because it serves as the central thermal component inside the heater

That helps keep the repair focused on the actual failure point while protecting the value of the rest of the power supply assembly

Because many spa heater assemblies look similar

The Pentair 59023400 complete DE grid replacement filter kit is designed for compatible DE filter applications where the full internal grid set needs replacement

Hayward Heat Exchanger Cap Plug (HPX01023872) pumpmotors A topside overlay is usefulThis cap plug is a replacement service part for compatible Hayward heat exchanger assemblies. Small sealing components like this help keep the heater water path intact and prevent leaks at key service points. It is useful when repairing or refreshing a heat exchanger assembly during heater maintenance. Replacement cap plug for compatible Hayward heat exchangers Helps seal key points in the heater water path Useful when the original plug is worn or