{"product_id":"koubliztic-carburetor-kit-for-bolens-21in-140cc-lawn-mower-briggs-stratton-300e-450e-500-550ex-engines","title":"Koubliztic Carburetor Kit for Bolens 21in 140cc Lawn Mower – Briggs \u0026 Stratton 300E\/450E\/500\/550EX Engines","description":"\u003ch2\u003eUpgrade your Bolens mower with a precise, ready to install Koubliztic carburetor kit\u003c\/h2\u003e\n\u003cp\u003eDesigned to replace Bolens 21 inch models 11A-B0BL765 and 11A-020W765, this kit also accommodates Briggs \u0026amp; Stratton 300E, 450E, 500, and 550EX series engines. The result is a cleaner fit, steadier idle, and dependable starts that refresh your mower experience without surprises.\u003c\/p\u003e\n\u003cp\u003eQuality construction and careful testing set this kit apart. Each component uses durable materials and is factory tested to promote stable engine behavior. The parts feel substantial in hand, with tight tolerances and a secure fit when assembled, contributing to predictable performance over time.\u003c\/p\u003e\n\u003cp\u003eThe package covers a complete swap. You get a carburetor and all related parts in one kit, reducing trips to the store and simplifying maintenance. Included items are a carburetor, spark plug, air filter, air filter cover, base, throat clamps, primer bulb, fuel filter, fuel shutoff valve, two rings, and two fuel hoses. Each piece is designed for straightforward alignment with the mower mounting points, helping the installation move smoothly from start to finish.\u003c\/p\u003e\n\u003cp\u003eEase of installation stands out for DIY enthusiasts and professionals alike. Parts are clearly labeled and sized for simple mounting. The swap can take as little as five to ten minutes with basic tools, and online installation videos are readily available to guide the process and keep downtime to a minimum.\u003c\/p\u003e\n\u003cp\u003eCompatibility is broad, covering a wide range of Bolens and Briggs \u0026amp; Stratton configurations. This makes the kit a flexible option whether you maintain a single mower or multiple units with overlapping engine families. While not guaranteeing universal fit, the listed part numbers and engine series indicate a solid match for the targeted models and generations of Briggs \u0026amp; Stratton engines.\u003c\/p\u003e\n\u003cp\u003eIn practice, users often notice improved throttle response and steadier operation after replacing worn components with this kit. The result is a quieter, more reliable mowing experience with smoother acceleration during routine cuts, all without committing to uncertain outcomes.\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 this carburetor kit compatible with my Bolens 21 inch mower?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It replaces Bolens models 11A-B0BL765 and 11A-020W765 and fits Briggs \u0026amp; Stratton 300E, 450E, 500, and 550EX engines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long does installation take?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Most users complete the swap in 5–10 minutes with the included parts and online installation videos.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Koubliztic","offers":[{"title":"Default Title","offer_id":42469311512661,"sku":"B0FF4MW8FJ","price":38.72,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/koubliztic-carburetor-kit-bolens-21in-front-view.jpg?v=1778090373","url":"https:\/\/plentytorque.co.uk\/products\/koubliztic-carburetor-kit-for-bolens-21in-140cc-lawn-mower-briggs-stratton-300e-450e-500-550ex-engines","provider":"PlentyTorque","version":"1.0","type":"link"}