{"product_id":"universal-canister-filter-rotor-shaft-hw302-303b-304a-304b-402b-404b","title":"Universal Canister Filter Rotor Shaft – HW302 303B 304A 402B","description":"\u003ch2\u003eUniversal Canister Filter Rotor Shaft — Compatible with HW302, 303B, 304A, 304B, 402B \u0026amp; 404B\u003c\/h2\u003e\n\n\u003cp\u003eKeep your aquarium's filtration system running at peak efficiency with this \u003cstrong\u003eUniversal Filter Barrel Rotor Shaft\u003c\/strong\u003e. Designed to fit a wide range of popular canister filter models — including the HW302, 303B, 304A, 304B, 402B, and 404B — this durable plastic replacement part is the smart, cost-effective way to restore your filter's performance without replacing the entire unit.\u003c\/p\u003e\n\n\u003cp\u003eWhether you're a seasoned aquarist or a hobbyist maintaining a home fish tank, having the right spare parts on hand means less downtime and a healthier aquatic environment for your fish.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Fits HW302, 303B, 304A, 304B, 402B, and 404B canister filter barrels — one part for multiple models.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Plastic Construction:\u003c\/strong\u003e Made from wear-resistant plastic engineered to handle continuous submersion and motor rotation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy DIY Replacement:\u003c\/strong\u003e Straightforward installation — no special tools required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaintains Water Quality:\u003c\/strong\u003e Restores full rotor function so your filter keeps water clean and properly oxygenated for your fish.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable in 3 Color Options:\u003c\/strong\u003e Choose the color that suits your preference.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGenuine Replacement Part:\u003c\/strong\u003e Ideal as a backup or immediate replacement for a worn or damaged rotor shaft.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eRemove the outer filter barrel (canister) lid carefully.\u003c\/li\u003e\n  \u003cli\u003eLift out the filter media baskets to access the pump head.\u003c\/li\u003e\n  \u003cli\u003eRemove the existing rotor shaft and replace it with the new shaft, ensuring it seats correctly in the impeller housing.\u003c\/li\u003e\n  \u003cli\u003eReassemble the filter in reverse order, prime if necessary, and restart.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Wear-resistant Plastic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Models:\u003c\/strong\u003e HW302, HW303B, HW304A, HW304B, HW402B, HW404B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColors Available:\u003c\/strong\u003e 3 options (see images)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 piece\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Proper Aquarium Filtration Matters\u003c\/h3\u003e\n\u003cp\u003eA functioning rotor shaft is critical to your canister filter's impeller mechanism, which drives water through the filter media. When the rotor shaft is worn or broken, filtration stops — and water quality deteriorates rapidly. Learn more about maintaining a healthy aquatic environment from the \u003ca href=\"https:\/\/www.fws.gov\/fisheries\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eU.S. Fish \u0026amp; Wildlife Service Fisheries program\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Which canister filter models is this rotor shaft compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This universal rotor shaft is designed to fit the HW302, HW303B, HW304A, HW304B, HW402B, and HW404B canister filter barrels, making it a versatile replacement part for a broad range of popular aquarium canister filters.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I install the replacement rotor shaft in my canister filter?\u003c\/h4\u003e\n\u003cp\u003eA: Installation is straightforward. First, remove the outer filter barrel lid and lift out the filter media baskets to access the pump head. Remove the worn rotor shaft and insert the new one, ensuring it seats securely in the impeller housing. Reassemble the filter, prime it if needed, and power it back on to restore normal filtration.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What material is the rotor shaft made from, and how long will it last?\u003c\/h4\u003e\n\u003cp\u003eA: The rotor shaft is constructed from wear-resistant plastic designed to withstand continuous operation in a wet, submerged environment. With regular maintenance and timely replacement of worn parts, it supports consistent, long-term filter performance.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this a DIY-friendly replacement part?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! No special tools are required. The rotor shaft is designed for easy at-home replacement, making it ideal for aquarium hobbyists who prefer to maintain their own equipment rather than purchasing an entirely new filter unit.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Which canister filter models is this rotor shaft compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This universal rotor shaft is designed to fit the HW302, HW303B, HW304A, HW304B, HW402B, and HW404B canister filter barrels, making it a versatile replacement part for a broad range of popular aquarium canister filters.\"}}, {\"@type\": \"Question\", \"name\": \"How do I install the replacement rotor shaft in my canister filter?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Installation is straightforward. First, remove the outer filter barrel lid and lift out the filter media baskets to access the pump head. Remove the worn rotor shaft and insert the new one, ensuring it seats securely in the impeller housing. Reassemble the filter, prime it if needed, and power it back on to restore normal filtration.\"}}, {\"@type\": \"Question\", \"name\": \"What material is the rotor shaft made from, and how long will it last?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The rotor shaft is constructed from wear-resistant plastic designed to withstand continuous operation in a wet, submerged environment. With regular maintenance and timely replacement of worn parts, it supports consistent, long-term filter performance.\"}}, {\"@type\": \"Question\", \"name\": \"Is this a DIY-friendly replacement part?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! No special tools are required. The rotor shaft is designed for easy at-home replacement, making it ideal for aquarium hobbyists who prefer to maintain their own equipment rather than purchasing an entirely new filter unit.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/vpggdm-rp.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Aquarium \u0026 Fish\", \"item\": \"https:\/\/vpggdm-rp.myshopify.com\/collections\/aquarium-fish\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Universal Canister Filter Rotor Shaft – HW302 303B 304A 402B\", \"item\": \"https:\/\/vpggdm-rp.myshopify.com\/products\/universal-canister-filter-rotor-shaft-hw302-303b-304a-304b-402b-404b\"}]}\u003c\/script\u003e","brand":"Qme","offers":[{"title":"A3","offer_id":49764372152534,"sku":"14:175#A3","price":28.65,"currency_code":"USD","in_stock":true},{"title":"A2","offer_id":49764372185302,"sku":"14:193#A2","price":28.65,"currency_code":"USD","in_stock":true},{"title":"A1","offer_id":49764372218070,"sku":"14:29#A1","price":28.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0827\/5243\/8486\/files\/Sba459e5a7de24304abf0116631ca918dF_c889ea97-dd99-47c0-a676-ef127c40ae81.webp?v=1785329505","url":"https:\/\/qmeboost.com\/products\/universal-canister-filter-rotor-shaft-hw302-303b-304a-304b-402b-404b","provider":"Qme","version":"1.0","type":"link"}