{"product_id":"q-p-mower-spindle-assembly-for-54-deck-replaces-am121342-complete-preassembled-unit","title":"q\u0026p Mower Spindle Assembly for 54\" Deck — Replaces AM121342, Complete Preassembled Unit","description":"\u003cp\u003e\u003cstrong\u003eq\u0026amp;p Mower Spindle Assembly replaces AM121342 and related part numbers to restore cutting performance on 54\" mower decks for 335 Garden Tractor (GT).\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis heavy‑duty spindle assembly is a direct replacement engineered to match the fit and function of original equipment spindles used on many 54‑inch mower decks. Designed with the same mounting-hole spacing and overall dimensions as the factory unit, it offers an easy swap for worn or damaged spindles so you can get your tractor back mowing quickly. The assembly ships as a complete unit, simplifying installation by removing the need to reuse old bearings or housings.\u003c\/p\u003e\n\n\u003ch3\u003eWhat exact models and part numbers does this spindle replace?\u003c\/h3\u003e\n\u003cp\u003eq\u0026amp;p’s spindle assembly is listed as compatible with a range of OEM numbers and common aftermarket codes, making it a versatile replacement option for several deck configurations. Check your tractor’s manual or the old spindle label to confirm a match before purchasing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect replacements: AM115528, AM115720, AM116065, AM121229, AM121342\u003c\/li\u003e\n  \u003cli\u003eAlso matches: 11278, 82-333, 285-109, 97636\u003c\/li\u003e\n  \u003cli\u003eIntended for: 54\" mower deck parts used on 335 Garden Tractor (GT)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do the spindle’s dimensions and mounting details compare to the original?\u003c\/h3\u003e\n\u003cp\u003eThe spindle is dimensioned to align with standard 54\" deck geometry so it mounts without modification. Knowing the height, outer diameter, and hole spacing lets you confirm compatibility at a glance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOverall height: 4 2\/3 inches (119 mm)\u003c\/li\u003e\n  \u003cli\u003eOuter diameter (OD): 6 inches (152 mm)\u003c\/li\u003e\n  \u003cli\u003eMounting hole center distance: 4 1\/5 inches (106.5 mm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat comes in the package and is it ready to install?\u003c\/h3\u003e\n\u003cp\u003eThe product is shipped as a single complete spindle assembly to minimize parts sourcing and installation time. Because it arrives preassembled, you typically avoid disassembly and bearings transfer from a worn unit.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePackage includes: 1 spindle assembly, ready for installation\u003c\/li\u003e\n  \u003cli\u003eNo separate bearings or housings required from the old unit\u003c\/li\u003e\n  \u003cli\u003eInstallation usually requires basic hand tools and proper torqueing of fasteners\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this spindle restore blade alignment and deck stability?\u003c\/h3\u003e\n\u003cp\u003eReplacing a damaged or worn spindle with a correctly sized assembly helps return the deck to its original geometry, which improves blade tracking and reduces wobble. Proper installation and inspection of mounting hardware ensure stable, reliable cutting performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTight, matched fit reduces blade runout and vibration\u003c\/li\u003e\n  \u003cli\u003eCorrect mounting-hole spacing maintains blade height and alignment\u003c\/li\u003e\n  \u003cli\u003eRecommended: inspect blades, belts, and pulleys while replacing spindle\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This q\u0026amp;p spindle assembly is aimed at owners and technicians of 335 Garden Tractor (GT) models with a 54\" mower deck who need a dependable replacement for AM121342 or related part numbers. It suits DIY mechanics and professional landscapers who prefer a complete, ready‑to‑install unit that matches OEM dimensions and simplifies repair downtime.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this spindle fit 54-inch decks on the 335 Garden Tractor?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It is designed for 54\" mower decks on the 335 Garden Tractor and matches listed OEM numbers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the spindle sold as a complete assembly ready to install?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The package includes one fully assembled spindle, ready for installation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"q\u0026p","offers":[{"title":"Default Title","offer_id":56805277139284,"sku":"B07BZQNT2Y","price":80.45,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/q-and-p-spindle-front-view.jpg?v=1786801151","url":"https:\/\/gardenluxe.co.uk\/products\/q-p-mower-spindle-assembly-for-54-deck-replaces-am121342-complete-preassembled-unit","provider":"Gardenluxe Uk","version":"1.0","type":"link"}