Hayward Diffuser, 2-1/2 HP and 3 HP | SPX3021B Jack's Magic If your heater is showing

If your heater is showing inaccurate temperature readings

Open the filter only after shutting down the pump and fully relieving pressure

Jandy 2-Inch Flange Replacement

Closes an opening or service port

It helps bring the control area back to proper alignment and enclosure after damage from weather

Hayward Diffuser, 2-1/2 HP and 3 HP | SPX3021B Jack's Magic If your heater is showingWhat This Part Is Used For The Hayward SPX3021B is a diffuser used in compatible 2 1 2 HP and 3 HP pump models. It surrounds the impeller inside the wet end and directs water into the pump housing. This component manages internal water flow. Why This Part Matters A cracked or warped diffuser can reduce efficiency and lower system pressure. Poor internal flow control may affect heater performance and filtration. Replacing a worn diffuser restores