{"product_id":"rc12yc-spark-plug-491055-pack-of-10-yigucs-briggs-stratton-champion-john-deere","title":"RC12YC Spark Plug 491055 Pack of 10 | YIGUCS – Briggs \u0026 Stratton, Champion, John Deere","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eMeet the YIGUCS RC12YC Spark Plug, a 10-pack designed to support routine maintenance for a range of outdoor power equipment. Built to replace worn or fouled plugs, these spark plugs can help restore dependable starts and steady idling in compatible engines. The working feel is tactile and precise, from the cool ceramic body to the snug threads that help create a reliable seal during combustion.\u003c\/p\u003e\n\n\u003ch3\u003eCompatibility at a glance\u003c\/h3\u003e\n\u003cp\u003eThis plug is designed to fit a broad array of brands and part numbers, including Champion RC12YC, Briggs \u0026amp; Stratton 491055 family (491055, 491055S, 491055T, 499608, 5066, 72347GS, 792015, 805015, 692051, 694385), John Deere M78543, Kohler variants, ARIENS, Gravely, MTD CC 759-3336, and Husqvarna models. Always confirm the exact fit for your engine before purchasing to avoid mismatches.\u003c\/p\u003e\n\n\u003ch3\u003eWhat’s inside\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e10 high quality spark plugs with a ceramic and alloy body for durability\u003c\/li\u003e\n  \u003cli\u003eCopper-core electrodes designed for fast heating and reliable ignition\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey features and benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDurable ceramic and alloy construction resists wear and corrosion for a long service life\u003c\/li\u003e\n  \u003cli\u003eCopper-core electrodes enable quick heat and responsive ignition across a range of operating conditions\u003c\/li\u003e\n  \u003cli\u003eCapable of withstanding brief high-temperature spikes, contributing to consistent combustion\u003c\/li\u003e\n  \u003cli\u003eManufactured under strict quality control for reliability in everyday use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eReal-world use cases\u003c\/h3\u003e\n\u003cp\u003eIdeal for routine maintenance on lawn mowers, small tractors, snow blowers, and other outdoor equipment. Replacing worn plugs can help improve starting performance, smooth running, and overall engine health—without overpromising results.\u003c\/p\u003e\n\n\u003ch3\u003eHow to replace and care tips\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCheck model compatibility before purchase to avoid mismatches\u003c\/li\u003e\n  \u003cli\u003eFollow the engine manufacturer’s recommended gap and torque during installation\u003c\/li\u003e\n  \u003cli\u003eUse a clean, dry environment when changing plugs to prevent contamination\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eNote: This product is intended for replacement in compatible engines. Performance gains vary by engine condition and operating environment.\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: What engines is the RC12YC spark plug compatible with?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Fits Champion RC12YC engines, Briggs \u0026amp; Stratton 491055 family, John Deere M78543, Kohler, ARIENS, Gravely, MTD, and Husqvarna models.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What are the main materials and performance features?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Ceramic and alloy body with copper-core electrodes enable fast heating and reliable ignition under demanding conditions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"YIGUCS","offers":[{"title":"Default Title","offer_id":48188451094772,"sku":"B0C6M1TY7B","price":28.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/6652\/0820\/files\/yigucs-rc12yc-spark-plug-pack-10.jpg?v=1778387697","url":"https:\/\/www.cerapatiogarden.com\/products\/rc12yc-spark-plug-491055-pack-of-10-yigucs-briggs-stratton-champion-john-deere","provider":"Cera Garden","version":"1.0","type":"link"}