Pentair Sta-Rite GW8000/GW9500/9000 Cleaner Oscillator Kit (GW9004) laingthermotech and this Darlly cartridge is

and this Darlly cartridge is designed for compatible applications referencing FC-1978

Designed for the impeller-to-shaft interface

which many users prefer because it feels more active than a simple fixed jet

This unit is especially useful when a compatible application needs impact-driving performance to depths of 164 feet with a 6Ah battery configuration

Pentair Sta-Rite GW8000/GW9500/9000 Cleaner Oscillator Kit (GW9004) laingthermotech and this Darlly cartridge isThis Pentair Sta Rite replacement is built for automatic cleaner repair and helps replace the oscillator on GW8000, GW9500, and 9000 cleaners. It helps correct erratic or stalled cleaner movement, making it a practical choice when the original part is cracked, worn, leaking, stripped, brittle, or missing. It is especially useful for targeted repairs where replacing a larger pump, filter, or cleaner assembly is not necessary. Confirm the part number,