{"product_id":"carrier-330426-409","title":"Carrier 330426-409 Arm  Assembly","description":"\u003cp\u003eThe \u003cstrong\u003eCarrier 330426-409 Arm and Grommet Assembly\u003c\/strong\u003e is the \u003cstrong\u003eOEM motor mounting arm\u003c\/strong\u003e with its \u003cstrong\u003erubber vibration-isolating grommet\u003c\/strong\u003e already fitted, supplied as one \u003cstrong\u003efactory replacement assembly\u003c\/strong\u003e from \u003cstrong\u003eCarrier\u003c\/strong\u003e, the manufacturer behind the \u003cstrong\u003eBryant\u003c\/strong\u003e and \u003cstrong\u003ePayne\u003c\/strong\u003e brands. Carrier lists it as an \u003cstrong\u003eARM \u0026amp; GROMMET ASSY\u003c\/strong\u003e in the \u003cstrong\u003e330426\u003c\/strong\u003e arm family, the same family that includes the \u003cstrong\u003e330426-406\u003c\/strong\u003e and \u003cstrong\u003e330426-411\u003c\/strong\u003e arm assemblies. \u003cstrong\u003e330426-409\u003c\/strong\u003e is a small \u003cstrong\u003eHVAC blower motor mounting part\u003c\/strong\u003e, but it is the piece that \u003cstrong\u003epositions the motor\u003c\/strong\u003e and keeps motor vibration out of the \u003cstrong\u003ecabinet\u003c\/strong\u003e, which makes a worn one a common source of \u003cstrong\u003eblower noise\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003e330426\u003c\/strong\u003e dash-number family covers several arm styles, and every dash number is its own \u003cstrong\u003earm and grommet assembly\u003c\/strong\u003e. The \u003cstrong\u003e330426-409\u003c\/strong\u003e is a separate part from the \u003cstrong\u003e330426-406\u003c\/strong\u003e and the \u003cstrong\u003e330426-411\u003c\/strong\u003e, so do not swap one dash number for another because the arms look close. Read the number off the old arm, then confirm the full \u003cstrong\u003emodel number\u003c\/strong\u003e and \u003cstrong\u003eserial number\u003c\/strong\u003e from the unit \u003cstrong\u003enameplate\u003c\/strong\u003e before you order. When the old arm is stamped \u003cstrong\u003e330426-409\u003c\/strong\u003e, this is the \u003cstrong\u003ecurrent Carrier assembly\u003c\/strong\u003e for it.\u003c\/p\u003e\n\n\u003cp\u003eHere is how the part works. A \u003cstrong\u003eblower motor\u003c\/strong\u003e is a vibrating mass, and bolting it to bare \u003cstrong\u003esheet metal\u003c\/strong\u003e would send every bit of that motion into the \u003cstrong\u003ecabinet\u003c\/strong\u003e and the \u003cstrong\u003eductwork\u003c\/strong\u003e. The \u003cstrong\u003earm\u003c\/strong\u003e is the structural link that holds the \u003cstrong\u003emotor position\u003c\/strong\u003e and \u003cstrong\u003eshaft alignment\u003c\/strong\u003e relative to the \u003cstrong\u003eblower wheel\u003c\/strong\u003e, and the \u003cstrong\u003erubber grommet\u003c\/strong\u003e is the isolator that lets the motor float slightly instead of hammering the metal. As the rubber ages it \u003cstrong\u003ehardens, cracks, flattens or soaks up oil\u003c\/strong\u003e, the motor sags, and you hear a \u003cstrong\u003ehum, buzz, tick or rattle\u003c\/strong\u003e that gets worse at \u003cstrong\u003ehigh speed\u003c\/strong\u003e. A \u003cstrong\u003ebent arm\u003c\/strong\u003e or \u003cstrong\u003ecracked weld or bend\u003c\/strong\u003e can let the motor drift out of line with the wheel, which loads the \u003cstrong\u003emotor bearings\u003c\/strong\u003e and can bring on \u003cstrong\u003ewheel rub\u003c\/strong\u003e. Look over the \u003cstrong\u003earm\u003c\/strong\u003e and \u003cstrong\u003egrommet\u003c\/strong\u003e before you condemn the motor. To change it, \u003cstrong\u003eshut off power at the disconnect\u003c\/strong\u003e, support the motor so it cannot drop, note the \u003cstrong\u003earm orientation\u003c\/strong\u003e and \u003cstrong\u003egrommet position\u003c\/strong\u003e, fit the new \u003cstrong\u003eassembly\u003c\/strong\u003e, snug the hardware without crushing the rubber, spin the \u003cstrong\u003ewheel by hand\u003c\/strong\u003e to confirm it runs \u003cstrong\u003esquare and centered\u003c\/strong\u003e, then restore power and check the motor for \u003cstrong\u003esmooth, quiet operation\u003c\/strong\u003e and normal \u003cstrong\u003eamp draw\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePre-assembled grommet:\u003c\/strong\u003e The \u003cstrong\u003erubber isolation grommet\u003c\/strong\u003e comes seated in the \u003cstrong\u003earm\u003c\/strong\u003e, which saves bench time and keeps the \u003cstrong\u003evibration-damping geometry\u003c\/strong\u003e the way \u003cstrong\u003eCarrier\u003c\/strong\u003e built it.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGenuine Carrier number:\u003c\/strong\u003e \u003cstrong\u003e330426-409\u003c\/strong\u003e is the \u003cstrong\u003eOEM part number\u003c\/strong\u003e, so there is no bending, drilling or field fabrication, and no guessing between look-alike \u003cstrong\u003e330426\u003c\/strong\u003e dash numbers.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eQuieter operation:\u003c\/strong\u003e A fresh \u003cstrong\u003evibration-isolating grommet\u003c\/strong\u003e stops the \u003cstrong\u003eblower motor\u003c\/strong\u003e from rattling against the \u003cstrong\u003ecabinet\u003c\/strong\u003e and cuts \u003cstrong\u003estructure-borne noise\u003c\/strong\u003e in the \u003cstrong\u003educt system\u003c\/strong\u003e.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProtects the blower:\u003c\/strong\u003e Holding the motor in its \u003cstrong\u003efactory position\u003c\/strong\u003e keeps the \u003cstrong\u003eshaft\u003c\/strong\u003e aligned with the \u003cstrong\u003eblower wheel\u003c\/strong\u003e and reduces \u003cstrong\u003ebearing wear\u003c\/strong\u003e and \u003cstrong\u003ewheel wobble\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the 330426-409 do?\u003c\/strong\u003e\u003cbr\u003e\nIt is the \u003cstrong\u003emotor mounting arm and grommet assembly\u003c\/strong\u003e. The \u003cstrong\u003earm\u003c\/strong\u003e supports and positions the \u003cstrong\u003eblower motor\u003c\/strong\u003e, and the \u003cstrong\u003erubber grommet\u003c\/strong\u003e isolates motor vibration from the \u003cstrong\u003ecabinet\u003c\/strong\u003e so the unit stays quiet.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow is the 330426-409 different from the 330426-406 and 330426-411?\u003c\/strong\u003e\u003cbr\u003e\nAll three are \u003cstrong\u003eCarrier\u003c\/strong\u003e \u003cstrong\u003eARM \u0026amp; GROMMET ASSY\u003c\/strong\u003e numbers in the same \u003cstrong\u003e330426\u003c\/strong\u003e family, but each dash number is a separate part built for different equipment. Match the number stamped on your old arm and confirm it against the \u003cstrong\u003emodel number\u003c\/strong\u003e and \u003cstrong\u003eserial number\u003c\/strong\u003e on the nameplate rather than swapping dash numbers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I reuse the old grommet?\u003c\/strong\u003e\u003cbr\u003e\nWe recommend replacing the \u003cstrong\u003earm and grommet\u003c\/strong\u003e together. \u003cstrong\u003eAged rubber\u003c\/strong\u003e hardens and loses its \u003cstrong\u003edamping\u003c\/strong\u003e, so a new \u003cstrong\u003eassembly\u003c\/strong\u003e is the right call any time the \u003cstrong\u003emotor mount\u003c\/strong\u003e is apart.\u003c\/p\u003e\n\n\u003cp\u003eDisclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"Default Title","offer_id":67774263492786,"sku":"330426-409","price":26.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/ac-parts-1000x1000_d8f6c0df-eeb5-4a7f-8ee2-4f92681ea310.webp?v=1755632728","url":"https:\/\/www.gsistore.com\/products\/carrier-330426-409","provider":"GSIstore","version":"1.0","type":"link"}