{"product_id":"spindle-assembly-91804126b","title":"918-04126B Spindle Assembly for Cub Cadet, MTD \u0026 Troy-Bilt Decks","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003e918-04126B spindle assembly\u003c\/strong\u003e is a replacement mower deck spindle for select \u003cstrong\u003eCub Cadet\u003c\/strong\u003e, \u003cstrong\u003eMTD\u003c\/strong\u003e, \u003cstrong\u003eTroy-Bilt\u003c\/strong\u003e, \u003cstrong\u003eMassey Ferguson\u003c\/strong\u003e, \u003cstrong\u003eToro\u003c\/strong\u003e, and related MTD-built mower deck applications using the listed spindle replacement numbers.\u003c\/p\u003e\n\u003cp\u003eThis spindle is commonly used on mower decks replacing \u003cstrong\u003e618-04126\u003c\/strong\u003e, \u003cstrong\u003e918-04125\u003c\/strong\u003e, \u003cstrong\u003e918-04126\u003c\/strong\u003e, or \u003cstrong\u003e918-04126B\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart type:\u003c\/strong\u003e mower deck spindle assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary replacement number:\u003c\/strong\u003e 918-04126B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulley diameter:\u003c\/strong\u003e 5-3\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlade mount:\u003c\/strong\u003e 6-point star center hole style\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeck application:\u003c\/strong\u003e select MTD-built mower decks using the listed spindle numbers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity included:\u003c\/strong\u003e 1 spindle assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eCompatible Brands \u0026amp; Model Series\u003c\/h2\u003e\n\u003cp\u003eThis spindle assembly is intended for select MTD-built mower decks using the listed OEM replacement numbers.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCub Cadet:\u003c\/strong\u003e select LT, RZT, RZT 50, and related mower deck applications using the 618-04126 \/ 918-04126 spindle path. For the full RZT 50 deck parts route, see the \u003ca href=\"\/blogs\/deck-parts-guides\/cub-cadet-rzt-50-parts-guide\"\u003eCub Cadet RZT 50 Parts Guide\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMTD:\u003c\/strong\u003e select mower decks using 618-04126, 918-04125, or 918-04126 series spindle numbers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTroy-Bilt:\u003c\/strong\u003e select mower decks using the listed spindle numbers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMassey Ferguson:\u003c\/strong\u003e select applications using 618-04126 or 918-04125 spindle numbers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eToro:\u003c\/strong\u003e select applications replacing 1120370\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFitment note:\u003c\/strong\u003e Supplier data references both 50-inch deck applications and some 42-inch Cub Cadet \/ Troy-Bilt deck paths. Match the original spindle number and blade center style before ordering.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eReplaces OEM Spindle Assembly Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCub Cadet:\u003c\/strong\u003e 618-04126, 618-04126A, 918-04125, 918-04125B, 918-04126, 918-04126A, 918-04126B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMTD:\u003c\/strong\u003e 618-04126, 618-04126A, 918-014126, 918-04125, 918-04125A, 918-04125B, 918-04126, 918-04126A, 918-04126B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTroy-Bilt:\u003c\/strong\u003e 618-04126, 618-04126A, 918-04125, 918-04125B, 918-04126, 918-04126A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMassey Ferguson:\u003c\/strong\u003e 618-04126, 618-04126A, 918-04125, 918-04125B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eToro:\u003c\/strong\u003e 1120370\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eImportant Fitment Check\u003c\/h2\u003e\n\u003cp\u003eBefore ordering this spindle assembly, compare your original spindle to the listed replacement numbers and confirm:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eYour original spindle number matches \u003cstrong\u003e618-04126\u003c\/strong\u003e, \u003cstrong\u003e918-04125\u003c\/strong\u003e, \u003cstrong\u003e918-04126\u003c\/strong\u003e, \u003cstrong\u003e918-04126B\u003c\/strong\u003e, or a listed cross-reference\u003c\/li\u003e\n\u003cli\u003eYour deck uses the correct spindle mounting pattern\u003c\/li\u003e\n\u003cli\u003eYour blade uses the correct \u003cstrong\u003e6-point star center hole\u003c\/strong\u003e style\u003c\/li\u003e\n\u003cli\u003eYour pulley diameter matches the required deck setup\u003c\/li\u003e\n\u003cli\u003eYour mower model and deck size match the correct MTD-built deck path\u003c\/li\u003e\n\u003cli\u003eYour belt, blade, and pulley setup match this spindle assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMany MTD-built decks look similar but use different spindle assemblies, blade center styles, and pulley setups.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWorking on a Cub Cadet RZT 50?\u003c\/strong\u003e This 918-04126B spindle assembly is part of the confirmed 50-inch deck parts path covered in our \u003ca href=\"\/blogs\/deck-parts-guides\/cub-cadet-rzt-50-parts-guide\"\u003eCub Cadet RZT 50 Parts Guide\u003c\/a\u003e, along with the matching deck belt, blades, idler pulley, PTO clutch, and full deck rebuild kit.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eBefore Ordering\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCheck the original spindle number if it is stamped or listed in your mower parts diagram\u003c\/li\u003e\n\u003cli\u003eConfirm deck size and blade count\u003c\/li\u003e\n\u003cli\u003eConfirm the blade center hole style before ordering\u003c\/li\u003e\n\u003cli\u003eInspect your spindle pulley and deck belt for wear\u003c\/li\u003e\n\u003cli\u003eReplace all worn spindles, pulleys, blades, and belts together when needed\u003c\/li\u003e\n\u003cli\u003eDo not rely on mower color, deck appearance, or brand name alone\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eCommon Symptoms This Spindle Helps Fix\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNoisy mower deck spindle\u003c\/li\u003e\n\u003cli\u003eBlade wobble or vibration\u003c\/li\u003e\n\u003cli\u003eUneven cut quality\u003c\/li\u003e\n\u003cli\u003eGrinding or squealing from the deck\u003c\/li\u003e\n\u003cli\u003eLoose or damaged spindle shaft\u003c\/li\u003e\n\u003cli\u003eBlade not spinning smoothly\u003c\/li\u003e\n\u003cli\u003ePremature belt wear caused by spindle drag or pulley misalignment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDisconnect the spark plug and remove the key before servicing the mower deck\u003c\/li\u003e\n\u003cli\u003eTake photos of the deck belt routing before disassembly\u003c\/li\u003e\n\u003cli\u003eInspect the blade, pulley, belt, and mounting hardware during spindle replacement\u003c\/li\u003e\n\u003cli\u003eMake sure the spindle seats flat against the mower deck\u003c\/li\u003e\n\u003cli\u003eTorque blade and mounting hardware to the mower manufacturer’s specification\u003c\/li\u003e\n\u003cli\u003eRotate the blade by hand after installation to confirm smooth movement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 spindle assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eQuantity note:\u003c\/strong\u003e This listing includes \u003cstrong\u003eone\u003c\/strong\u003e spindle assembly. Many multi-blade mower decks use more than one spindle. Order the quantity needed for your repair.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Buy From PTO Direct USA?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFitment-first deck part listings\u003c\/li\u003e\n\u003cli\u003eClear OEM and aftermarket part-number routing\u003c\/li\u003e\n\u003cli\u003eFast USA shipping\u003c\/li\u003e\n\u003cli\u003eSupport for mower owners, repair shops, and small-engine dealers\u003c\/li\u003e\n\u003cli\u003eRelated belts, blades, pulleys, deck kits, and PTO clutches available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eNeed Help Confirming Fitment?\u003c\/h2\u003e\n\u003cp\u003eIf you are unsure whether this spindle fits your mower, send us your mower model number, deck size, original spindle number, blade center style, and photos of your existing spindle before ordering.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003ch3\u003eDoes this replace 918-04126B?\u003c\/h3\u003e\n\u003cp\u003eYes. This spindle assembly replaces \u003cstrong\u003e918-04126B\u003c\/strong\u003e and related spindle numbers including \u003cstrong\u003e618-04126\u003c\/strong\u003e, \u003cstrong\u003e918-04125\u003c\/strong\u003e, \u003cstrong\u003e918-04126\u003c\/strong\u003e, and \u003cstrong\u003e918-04126A\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eDoes this fit Cub Cadet RZT 50?\u003c\/h3\u003e\n\u003cp\u003eThis spindle is listed for select \u003cstrong\u003eCub Cadet RZT 50\u003c\/strong\u003e and related MTD-built deck applications using the \u003cstrong\u003e618-04126 \/ 918-04126\u003c\/strong\u003e spindle path. Confirm your original spindle number, blade center style, mounting pattern, pulley diameter, and deck layout before ordering. For the full 50-inch deck parts route, see the \u003ca href=\"\/blogs\/deck-parts-guides\/cub-cadet-rzt-50-parts-guide\"\u003eCub Cadet RZT 50 Parts Guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eDoes this fit Troy-Bilt decks?\u003c\/h3\u003e\n\u003cp\u003eThis spindle is listed for select Troy-Bilt mower decks using \u003cstrong\u003e618-04126\u003c\/strong\u003e, \u003cstrong\u003e918-04125\u003c\/strong\u003e, or related spindle replacement numbers.\u003c\/p\u003e\n\u003ch3\u003eWhat blade center style does this spindle use?\u003c\/h3\u003e\n\u003cp\u003eThis spindle is listed with a \u003cstrong\u003e6-point star center hole\u003c\/strong\u003e blade mount style. Confirm your blade center style before ordering.\u003c\/p\u003e\n\u003ch3\u003eHow many spindle assemblies are included?\u003c\/h3\u003e\n\u003cp\u003eThis listing includes \u003cstrong\u003eone\u003c\/strong\u003e spindle assembly. If your mower deck uses multiple spindles, order the quantity required for your repair.\u003c\/p\u003e\n\u003ch3\u003eCan I order this spindle by deck size only?\u003c\/h3\u003e\n\u003cp\u003eNo. Do not order by deck size alone. Match your original spindle number, blade center style, pulley setup, mounting pattern, and mower model before ordering.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eNeed the full deck setup?\u003c\/strong\u003e View the related \u003ca href=\"\/products\/deck-kit-cub-cadet-rzt-50-95404044\"\u003e50-inch deck rebuild kit for Cub Cadet RZT 50, MTD, and Troy-Bilt\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNeed matching deck parts?\u003c\/strong\u003e Browse \u003ca href=\"\/collections\/belts\"\u003emower deck belts\u003c\/a\u003e, \u003ca href=\"\/collections\/blades\"\u003emower blades\u003c\/a\u003e, \u003ca href=\"\/collections\/spindles\"\u003espindle assemblies\u003c\/a\u003e, and \u003ca href=\"\/collections\/pulleys\"\u003edeck pulleys and idlers\u003c\/a\u003e.\u003c\/p\u003e","brand":"PTO Direct USA","offers":[{"title":"Default Title","offer_id":53128729264495,"sku":"SPINDLE-MTD-91804126B","price":44.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0957\/5058\/6735\/files\/spindle-assembly-91804126b.jpg?v=1781833770","url":"https:\/\/ptodirectusa.com\/products\/spindle-assembly-91804126b","provider":"PTO Direct USA","version":"1.0","type":"link"}