{"product_id":"john-deere-mower-blade-kit-gy20850-oem-replacement-blades-for-42-decks-factory-balanced-fit","title":"John Deere mower blade kit GY20850 — OEM replacement blades for 42\" decks, factory-balanced fit","description":"\u003cp\u003e\u003cstrong\u003eThe John Deere Original Equipment Mower Blade Kit GY20850 is a direct-fit replacement blade set designed to restore cutting performance on compatible John Deere lawn tractors and mower decks.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis OEM blade kit replaces worn or damaged blades on a wide range of John Deere models so your deck cuts evenly and reliably. Manufactured to John Deere specifications, the kit is intended to match original balance, hole patterns, and blade geometry for proper clearance and consistent grass discharge. Use this kit when you need factory-fit parts that maintain deck performance after long seasons of mowing or when switching between mowing and snow attachments.\u003c\/p\u003e\n\n\u003ch3\u003eWhich John Deere models will this blade kit fit?\u003c\/h3\u003e\n\u003cp\u003eThe GY20850 kit fits many John Deere riding mowers and lawn tractors across several series. Check your owner manual or blade part reference to confirm compatibility before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits series: 102, 105, 115, 125, 135\u003c\/li\u003e\n  \u003cli\u003eLA-series decks: LA100, LA105, LA110, LA115, LA120, LA125, LA135 (42\" decks listed)\u003c\/li\u003e\n  \u003cli\u003eAlso compatible with D100, D105, D110, D120, D125, D130, X125, X145 models\u003c\/li\u003e\n  \u003cli\u003eWorks with multiple snow blade and 2-stage snow blower attachments on listed LA\/D models\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this blade kit affect cutting performance?\u003c\/h3\u003e\n\u003cp\u003eReplacing blades with the OEM GY20850 set restores the deck's designed cutting geometry for cleaner, more even cuts. Properly balanced, sharp blades reduce scalping, improve bagging\/side-discharge efficiency, and lower stress on spindle components.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFactory-balanced blade profile for minimal vibration\u003c\/li\u003e\n  \u003cli\u003eMaintains original discharge and mulching characteristics\u003c\/li\u003e\n  \u003cli\u003eReduces uneven cut lines and tearing of grass blades\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I know about installation and maintenance?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for anyone comfortable with basic mower maintenance; however, always follow safety steps and torque specifications from John Deere. Regular sharpening, correct mounting orientation, and periodic balance checks extend blade life and protect the deck.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInstall with engine off, spark plug disconnected, and mower secured\u003c\/li\u003e\n  \u003cli\u003eObserve original blade direction and torque bolts to factory specs\u003c\/li\u003e\n  \u003cli\u003eSharpen as needed and replace if bent, cracked, or excessively worn\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre these blades suitable when using snow or collection attachments?\u003c\/h3\u003e\n\u003cp\u003eYes — this OEM kit is listed as compatible with a variety of snow blades, 2-stage snow blowers, and collection systems for the same John Deere models. Using the correct blades helps keep attachment clearance and deck balance correct while switching between tasks.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with 42\" and 46\" snow blade applications noted for LA100–LA125\u003c\/li\u003e\n  \u003cli\u003eListed for 44\" and 42\" 2-stage snow blower configurations on multiple models\u003c\/li\u003e\n  \u003cli\u003eWorks with collection systems specified for LA100–LA130 series decks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Lawn owners and equipment technicians who need an authentic John Deere blade replacement to preserve factory cutting performance on specified compact and lawn tractor models. If you own a listed model and prioritize correct fit, balanced operation, and compatibility with seasonal attachments, this OEM GY20850 blade kit is built to meet those needs.\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: Is GY20850 an OEM John Deere part?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. GY20850 is an original equipment John Deere blade kit built to match factory specifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use these blades on a mower with a collection system?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This kit is listed compatible with many LA and D models equipped with collection systems and snow attachments.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"John Deere","offers":[{"title":"Default Title","offer_id":56819004146004,"sku":"B003R2FH0G","price":90.78,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/john-deere-front-blades.jpg?v=1786961582","url":"https:\/\/gardenluxe.co.uk\/products\/john-deere-mower-blade-kit-gy20850-oem-replacement-blades-for-42-decks-factory-balanced-fit","provider":"Gardenluxe Uk","version":"1.0","type":"link"}