{"product_id":"hayward-super-ii-pump-diffuser-2-1-2-x-3hp-spx3021b","title":"Hayward Diffuser for 2-1\/2 to 3 HP Pumps | SPX3021B","description":"\u003cp\u003eThe Hayward Diffuser (SPX3021B) is the OEM replacement diffuser engineered for Hayward pumps rated at 2-1\/2 to 3 HP.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin: 20px 0; border: 1px solid #ccc;\"\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eHayward Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eSPX3021B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eHP Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e2-1\/2 to 3 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eUPC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e610377041379\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePoolaroo Pro Tip\u003c\/h3\u003e\n\u003cp\u003eWhen replacing the diffuser, inspect the impeller and shaft seal at the same time — these components wear together and are accessible once the pump volute is open. Replacing worn companion parts during the same service call avoids a repeat disassembly. Consult your pump's installation manual for torque specifications and O-ring seating requirements before reassembly.\u003c\/p\u003e\n\n\u003c!-- wft:processed:manual:2026-06-18 --\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":51774154408211,"sku":"SPX3021B","price":58.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0920\/0687\/5411\/files\/hayward-diffuser-for-2-1-2-to-3-hp-pumps-spx3021b.webp?v=1786088314","url":"https:\/\/poolaroo.com\/products\/hayward-super-ii-pump-diffuser-2-1-2-x-3hp-spx3021b","provider":"Poolaroo","version":"1.0","type":"link"}