{"product_id":"udc-parts-spindle-assembly-for-cub-cadet-54-inch-deck-oem-fit-replacement-kit-with-hardware","title":"UDC Parts Spindle Assembly for Cub Cadet 54-inch Deck — OEM-fit Replacement Kit with Hardware","description":"\u003cp\u003e\u003cstrong\u003eUDC Parts 918-06978 is a direct-fit spindle assembly engineered to replace worn or damaged spindles on 54-inch Cub Cadet and compatible MTD\/Troy-Bilt\/Columbia decks for reliable cutting performance.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your mower deck is producing uneven cuts, loud bearing noise, or excessive vibration, worn spindle assemblies are a common culprit. This UDC Parts replacement spindle matches the OEM dimensions and mounting pattern (replaces MTD 618-06978, 918-06978) to restore deck stability and blade alignment without the need for aftermarket modifications.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this spindle restore mower deck performance?\u003c\/h3\u003e\n\u003cp\u003eReplacing a failing spindle removes play between the blade and deck and eliminates bearing noise, which helps blades track true and cut more evenly. The assembly includes the main spindle housing, pulley-ready top, and all mounting hardware you need for a complete swap.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFull kit: 1 spindle, 4 mounting bolts, blade mounting bolt, pulley lock nut, washer.\u003c\/li\u003e\n  \u003cli\u003eOEM match: Designed to replace MTD 618-06978 and 918-06978 for a bolt-on fit.\u003c\/li\u003e\n  \u003cli\u003ePrecision fit: 6-point star flange and factory-style dimensions for alignment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this fit my Cub Cadet or other mower models?\u003c\/h3\u003e\n\u003cp\u003eThe spindle is built to the same specs used on many 54-inch decks from Cub Cadet and related brands. Verify compatibility by checking your original part number or matching the mounting hole pattern and overall dimensions before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCub Cadet models include RZT-L54, RZT-S54, RZT-LX 54, XT1-GT54, XT2-GX54 and variants with KH\/KW designations.\u003c\/li\u003e\n  \u003cli\u003eMTD\/Craftsman models supported: T8400, G8600, G8400, Z6900, Z6600.\u003c\/li\u003e\n  \u003cli\u003eAlso fits Troy-Bilt, Columbia, and several Mustang and Bronco series lawn\/zero-turn tractors listed in specifications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the key dimensions and hardware in the package?\u003c\/h3\u003e\n\u003cp\u003eThis assembly follows the original envelope so it installs without deck modification. Critical measurements are provided so you can confirm fitment against your current spindle or service manual.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOverall height: 6-13\/16\" (173 mm) for proper blade clearance and belt alignment.\u003c\/li\u003e\n  \u003cli\u003ePulley outer diameter: 5-9\/16\" to match belt and pulley spacing on 54\" decks.\u003c\/li\u003e\n  \u003cli\u003eIncludes mounting and blade hardware: 4 mounting bolts, a blade bolt, pulley lock nut, and washer for a complete installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long should a replacement spindle last and what maintenance helps extend service life?\u003c\/h3\u003e\n\u003cp\u003eService life depends on use, conditions, and maintenance, but installing a quality spindle and following simple upkeep increases longevity. Keep decks free of debris and check pulleys and belts regularly to reduce stress on bearings and housings.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInspect pulleys and belts for wear; replace worn items to avoid premature spindle failure.\u003c\/li\u003e\n  \u003cli\u003eKeep deck undersides clean to prevent debris intrusion into bearings and seals.\u003c\/li\u003e\n  \u003cli\u003eTorque mounting and blade bolts to factory specs to prevent loosening and vibration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This UDC Parts spindle assembly is intended for homeowners, landscapers, and repair shops servicing 54-inch Cub Cadet and compatible MTD\/Troy-Bilt\/Columbia lawn tractors and zero-turn mowers. If you are replacing a spindle that matches the listed OEM numbers or the given dimensions and model families, this kit gives you the mounting hardware and pulley compatibility needed for a straightforward, reliable repair.\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 include all installation bolts and nuts?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the kit includes 4 mounting bolts, 1 blade mounting bolt, 1 pulley lock nut, and 1 washer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this spindle for a 54\" Cub Cadet RZT-S54KH?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — it lists compatibility with RZT-S54KH, matching OEM part numbers and dimensions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"UDC Parts","offers":[{"title":"Default Title","offer_id":56831749062996,"sku":"B0CQ52BRB8","price":72.81,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/udc-parts-spindle-front-assembly.jpg?v=1787019580","url":"https:\/\/gardenluxe.co.uk\/products\/udc-parts-spindle-assembly-for-cub-cadet-54-inch-deck-oem-fit-replacement-kit-with-hardware","provider":"Gardenluxe Uk","version":"1.0","type":"link"}