{"product_id":"swimables-sw-21-303-pentair-pump-impeller-355074","title":"Swimables Impeller for Pentair Pumps 1 HP Full Rated","description":"\u003ch2\u003e\u003cspan\u003eKey Benefits + Pump Compatibility\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eSwimables replacement impeller for compatible Pentair and Sta-Rite pool pump wet ends\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eDesigned for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e1 HP full-rated \/ 1.5 HP up-rated applications\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eCross-references to \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ePentair impeller 355074\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eDocumented for compatible \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ePentair SuperFlo and Sta-Rite SuperMax\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e pumps\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAlso associated with select Pentair Challenger and Pinnacle pump applications\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eReplaces a worn, damaged, cracked, or failed impeller without replacing the complete pump\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCurrent replacement-parts documentation identifies \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSW-21-303\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e as the Swimables replacement for Pentair \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e355074\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and describes it as a 1 HP full-rated \/ 1.5 HP up-rated pump impeller.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eQuick Product Summary\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSwimables SW-21-303 Pump Impeller\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is an aftermarket replacement for Pentair-style impeller \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e355074\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. It is designed for compatible pump configurations using a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e1 HP full-rated or 1.5 HP up-rated hydraulic setup\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, including documented Pentair SuperFlo and Sta-Rite SuperMax applications. The impeller mounts inside the pump wet end and spins with the motor shaft to move water through the circulation system. Before ordering, verify the pump model, existing impeller number, motor rating, and hydraulic configuration rather than selecting an impeller by motor horsepower alone.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eBest For\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003ePentair SuperFlo pump repairs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSta-Rite SuperMax pump repairs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSelect Pentair Challenger applications\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSelect Pentair Pinnacle applications\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eReplacing Pentair-style impeller 355074\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1 HP full-rated \/ 1.5 HP up-rated pump configurations\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ePart 355074 is documented for Pentair Challenger, SuperFlo, and related pump applications, while current SW-21-303 listings cross-reference that same impeller.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eWhy This Matters\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eThe impeller determines how the pump converts motor rotation into water flow\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUsing the wrong impeller can create an incorrect hydraulic load for the motor and pump wet end\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMatching the original impeller number is more reliable than matching horsepower alone\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eA worn or damaged impeller can contribute to reduced circulation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInspecting the diffuser and shaft seal during repair can help identify additional worn components\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eCommon Signs You Need This \/ Use This When\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eThe existing impeller is cracked or physically damaged\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eImpeller vanes are worn or obstructed\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePump service confirms that the impeller requires replacement\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eYour existing impeller cross-references to \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e355074\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eYour pump configuration requires the 1 HP full-rated \/ 1.5 HP up-rated impeller\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eYou are rebuilding a compatible SuperFlo, SuperMax, Challenger, or related pump wet end\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eProduct Specifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eSpecification\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eDetails\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBrand\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSwimables\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProduct Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePool Pump Impeller\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePart Number\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSW-21-303\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSKU\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSW-21-303\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eReplaces \/ Cross-Reference\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePentair 355074\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eRating\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1 HP Full Rated \/ 1.5 HP Up Rated\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eApplication\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCompatible pool pump wet ends\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eDocumented Pump Families\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePentair SuperFlo, Sta-Rite SuperMax; select Challenger\/Pinnacle applications\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePackage Quantity\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1 Impeller\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOEM Status\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAftermarket Swimables replacement part\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCategory\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePool Pump Replacement Part\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe SW-21-303 cross-reference to \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e355074\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is supported by current replacement-parts listings. Pentair 355074 is also documented as a 1 HP full-rated Challenger \/ 1.5 HP SuperFlo-style impeller.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eCompatibility \/ Fitment Notes\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eDo not select SW-21-303 by motor horsepower alone.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Pump manufacturers may use full-rated, up-rated, service-factor, and total-horsepower configurations that can make two motor labels look different even though the hydraulic setup is related.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCurrent replacement data associates SW-21-303 \/ 355074 with compatible:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003ePentair SuperFlo\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSta-Rite SuperMax\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePentair Challenger\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePentair Pinnacle\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cbr class=\"ProseMirror-trailingBreak\"\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFor the safest replacement, verify the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eexisting impeller number, pump model, motor label, and diffuser configuration\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e before ordering.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAlso note that \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSW-21-303 should not be confused with Swimables SW-21-003\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Swimables officially identifies SW-21-003 as the WhisperFlo-style 1 HP impeller replacing Pentair 073128.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eInstallation \/ Use Notes\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eTurn off power to the pool pump at the breaker before servicing. The pump must be electrically isolated before the wet end is opened.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eRemove and replace the impeller according to the service procedure for the exact pump model. Inspect the mechanical shaft seal, diffuser, diffuser seal, and other wet-end components while the pump is disassembled. Confirm that the replacement impeller matches the original hydraulic configuration before reassembly.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eProfessional installation is recommended when pump compatibility or electrical isolation is uncertain.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eBuy with Confidence\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBenchmark Pool Supply helps customers identify pool pump parts using manufacturer numbers, pump models, motor ratings, and practical service knowledge. Impellers can look nearly identical while being designed for different hydraulic loads, so matching \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSW-21-303 \/ 355074\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e before ordering can help prevent an incorrect pump repair.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cbr\u003e\u003c\/h2\u003e","brand":"Swimables","offers":[{"title":"Default Title","offer_id":43264507445322,"sku":"SW-21-303","price":47.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/6580\/7178\/files\/337_61z2UGyaygL.webp?v=1787162717","url":"https:\/\/benchmarkpoolsupply.com\/products\/swimables-sw-21-303-pentair-pump-impeller-355074","provider":"Benchmark Pool Supply","version":"1.0","type":"link"}