{"product_id":"grasscool-gy20850-mulching-blades-for-john-deere-42-inch-deck-7-star-mounting-pattern-replaces-gx22151-d100-d130","title":"Grasscool GY20850 Mulching Blades for John Deere 42-Inch Deck – 7-Star Mounting Pattern, Replaces GX22151 (D100–D130)","description":"\u003ch2\u003eGrasscool GY20850 Mulching Blades for John Deere 42-Inch Deck\u003c\/h2\u003e\n\u003cp\u003eUpgrade your mowing setup with Grasscool GY20850 mulching blades, designed for John Deere 42-inch decks. Built around a precise 7‑star mounting pattern, these blades aim to deliver a secure fit and focused cutting action that helps manage clippings with less fuss while keeping your mower efficient and ready for the next pass.\u003c\/p\u003e\n\u003ch3\u003eCompatibility and mounting\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e7-star mounting pattern enables reliable alignment with John Deere 42-inch deck riding mowers across multiple model lines.\u003c\/li\u003e\n  \u003cli\u003eReplaces GX22151 and fits a broad range of JD decks, including D100–D130, LA100–LA135, and 102, 105, 115, 125, 135, S100, X125, S120, E100, E110, E120, E130, E140.\u003c\/li\u003e\n  \u003cli\u003eClear guidance is provided to help you identify the correct blade pattern before ordering to minimize guesswork.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications at a glance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBlade type: toothed mulching blade\u003c\/li\u003e\n  \u003cli\u003eCenter hole shape: 7-point star\u003c\/li\u003e\n  \u003cli\u003eDeck size: 42 inches\u003c\/li\u003e\n  \u003cli\u003eBlade length: 21-3\/8 inches (543 mm)\u003c\/li\u003e\n  \u003cli\u003eWidth: 2-1\/2 inches (63.5 mm)\u003c\/li\u003e\n  \u003cli\u003eThickness: 13\/64 inch (5 mm)\u003c\/li\u003e\n  \u003cli\u003eAir lift: 1 inch (25 mm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReal-world use and benefits\u003c\/h3\u003e\n\u003cp\u003eThese blades are designed to support mulching performance within the John Deere 42-inch deck ecosystem. Expect a robust edge profile that can help process clippings efficiently and contribute to a tidy lawn finish. The toothed design and specific dimensions align with the deck size and mounting pattern to provide a practical upgrade path for compatible machines.\u003c\/p\u003e\n\u003ch3\u003eInstallation notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eYou do not need to remove the paint on the blade before use—the coating protects your hands during installation and may wear off after a short period of movement.\u003c\/li\u003e\n  \u003cli\u003eDesigned for straightforward mounting with the 7-star pattern, potentially reducing downtime during blade swaps.\u003c\/li\u003e\n\u003c\/ul\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: Will Grasscool GY20850 blades fit my John Deere 42-inch deck?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They use a 7-star mounting pattern and fit many JD 42-inch lawn tractors including D100–D130 and LA-series.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What are the blade specifications at a glance?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Blade length 21-3\/8 inches, width 2-1\/2 inches, thickness 5 mm; air lift 1 inch; 7-point star center hole.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Grasscool","offers":[{"title":"Default Title","offer_id":48212918927604,"sku":"B0DF6ZNV2V","price":40.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/6652\/0820\/files\/grasscool-gy20850-7-star-mounting-pattern.jpg?v=1778450846","url":"https:\/\/www.cerapatiogarden.com\/products\/grasscool-gy20850-mulching-blades-for-john-deere-42-inch-deck-7-star-mounting-pattern-replaces-gx22151-d100-d130","provider":"Cera Garden","version":"1.0","type":"link"}