Balboa 15" 5.5kW Auxiliary Heater (26-58132-K) polariszodiac A cartridge like this is

A cartridge like this is useful because it helps restore filtration performance while preserving the original larger-end design used by the filter housing

Hayward swivel connector kit

The Raypak 55A dial plate is designed for compatible heater control applications where the supported visual label or trim plate around the dial needs replacement

shorter filter elements

Balboa 15" 5.5kW Auxiliary Heater (26-58132-K) polariszodiac A cartridge like this isBalboa 15" 5. 5kW Auxiliary Heater (26 58132 K) provides higher output supplemental heating for compatible spa systems designed around a separate auxiliary heater circuit. Its 5. 5kW capacity and 15" configuration should be confirmed against the original assembly, as auxiliary heaters are application specific components rather than universal replacements. Auxiliary heaters serve a different role from the primary heater in a spa pack. They are used