{"product_id":"jyleyj-42-mulching-blades-for-john-deere-42-deck-2-pack-rolled-mulch-heat-treated-steel","title":"JYLEYJ 42\" Mulching Blades for John Deere 42\" Deck — 2-Pack Rolled-Mulch, Heat-Treated Steel","description":"\u003cp\u003e\u003cstrong\u003eThese JYLEYJ 42\" mulching blades are a two-blade replacement set engineered to restore mulching performance for John Deere 42\" decks, matching OEM fit and cutting geometry.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eSwapping worn blades for the correct replacement restores cut quality, mulch dispersion and bagging performance on zero-turn and lawn tractor models. This 2-pack from JYLEYJ is sized to fit John Deere 42\" mower decks used on a range of X- and Z-series machines, and it follows the OEM bolt pattern and rolled-mulch profile to keep airflow and grass clippings consistent.\u003c\/p\u003e\n\n\u003ch3\u003eWill these blades fit my John Deere model?\u003c\/h3\u003e\n\n\u003cp\u003eYes — these blades are manufactured to replace OEM part numbers UC22008, M170642, M170639 and GY20683 and are sized for 42\" decks. They fit multiple John Deere machines that use the same 42\" deck mounting and center hole spacing.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCompatible models: X330, X350, X354, X370, X380, Z335E, Z335M, Z345M, Z345R and S220 when equipped with a 42\" deck\u003c\/li\u003e\n  \u003cli\u003eBlade length: 21 3\/8\" (21.375\") for correct deck clearance\u003c\/li\u003e\n  \u003cli\u003eCenter hole circle diameter: 13\/16\" (0.803\") for proper hub alignment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these blades affect mowing performance?\u003c\/h3\u003e\n\n\u003cp\u003eThe rolled mulching profile improves clipping circulation under the deck so grass is cut multiple times and discharged finer, which promotes faster decay. Properly shaped blades help preserve airflow for consistent cutting height across the deck.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eRolled-mulch design encourages finer clipping reduction\u003c\/li\u003e\n  \u003cli\u003eDurable edge retention keeps cuts cleaner between sharpenings\u003c\/li\u003e\n  \u003cli\u003eBalanced geometry reduces vibration and protects spindles\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the physical specifications and materials?\u003c\/h3\u003e\n\n\u003cp\u003eEach blade in this JYLEYJ set is produced from high-quality steel with dimensions matching OEM expectations to ensure safe, lasting use. Thickness and width are specified to maintain rigidity while allowing proper lift and mulching action.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eLength: 21.375 inches; Width: 2.756 inches; Thickness: 0.197 inches\u003c\/li\u003e\n  \u003cli\u003eCenter hole circle: 0.803 inches to match original mounting hardware\u003c\/li\u003e\n  \u003cli\u003eConstruction: heat-treated steel for durability and wear resistance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and what after-sales support is offered?\u003c\/h3\u003e\n\n\u003cp\u003eInstallation follows standard blade change procedures: remove old blades, verify blade orientation, and torque mounting hardware to factory specs. JYLEYJ backs the product with customer support and a warranty so you can replace blades confidently.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eComes as a 2-pack to replace both left and right blades on a 42\" deck\u003c\/li\u003e\n  \u003cli\u003eEasy drop-in fit for matching OEM bolt pattern and hole spacing\u003c\/li\u003e\n  \u003cli\u003e24-month after-sales warranty and customer support within 24 hours\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Landscapers, homeowners with large lawns and service technicians who operate John Deere lawn tractors and zero-turn mowers that use 42\" decks will benefit most from this JYLEYJ blade set. If your machine lists any of the compatible part numbers or models and you want to restore mulching efficiency, this OEM-matched 2-pack provides a direct, economical replacement engineered to meet factory-fit dimensions and performance expectations.\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: Do these blades match John Deere OEM numbers?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. They replace UC22008, M170642, M170639 and GY20683 and match OEM dimensions for 42\" decks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long is the warranty?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: JYLEYJ provides a 24-month after-sales warranty with customer support responses within 24 hours.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"JYLEYJ","offers":[{"title":"Default Title","offer_id":56831086395732,"sku":"B0GKG9FJXG","price":77.94,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/jyleyj-front-packaging-42-inch-mulching-blades_a370603c-cb2a-4b4e-88b2-649f22499988.jpg?v=1787011341","url":"https:\/\/gardenluxe.co.uk\/products\/jyleyj-42-mulching-blades-for-john-deere-42-deck-2-pack-rolled-mulch-heat-treated-steel","provider":"Gardenluxe Uk","version":"1.0","type":"link"}