{"product_id":"npauto-ignition-coil-and-spark-plug-kit-for-3-5l-v6-nissan-infiniti-6-pack-uf550-pre-gapped-plugs","title":"NPAUTO Ignition Coil and Spark Plug Kit for 3.5L V6 Nissan \u0026 Infiniti — 6-Pack UF550, Pre-Gapped Plugs","description":"\u003cp\u003e\u003cstrong\u003eComplete replacement kit of six NPAUTO UF550 ignition coils and six pre-gapped spark plugs engineered for 3.5L V6 Nissan and Infiniti engines from late-2000s through 2020.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis all-in-one ignition kit bundles six UF550 ignition coils with six pre-gapped spark plugs to restore reliable spark, smoother idle, and consistent combustion in compatible Nissan and Infiniti 3.5L V6 vehicles. Built to meet or exceed OEM specifications, the components are supplied as a matched set so you can replace all cylinders at once and avoid mismatched wear or performance gaps.\u003c\/p\u003e\n\n\u003ch3\u003eWhich models and years does this NPAUTO kit fit?\u003c\/h3\u003e\n\u003cp\u003eThis kit is designed for a broad range of Nissan and Infiniti vehicles with the 3.5L V6 engine. Always verify the compatibility chart for your exact VIN and engine code before purchasing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNissan: Maxima (2009–2014, 2016–2020), Altima (2007–2018), Murano (2009–2020), Pathfinder (2013–2020), Quest (2011–2017), 350Z (2007–2009)\u003c\/li\u003e\n  \u003cli\u003eInfiniti: Q50\/Q70 (2014–2017 depending on model), QX60 (2014–2020), M35\/M35h (2009–2013), EX35 (2008–2012), FX35 (2009–2012), G35\/G25 (2007–2008, 2011–2012)\u003c\/li\u003e\n  \u003cli\u003eCompatible part numbers: UF550, UF-550, 22448JA10A, 22448ZE00A, 22448JA10C, 22448JA11C, 22448JA12D, GN10244, C-750, C1670\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow will replacing all six coils and plugs at once help my car?\u003c\/h3\u003e\n\u003cp\u003eReplacing the entire set prevents uneven wear across cylinders and reduces the chance of recurring misfires caused by a single weak component. A matched replacement set restores consistent spark timing and combustion efficiency.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSolves intermittent engine misfires and rough idling\u003c\/li\u003e\n  \u003cli\u003eImproves starting reliability and throttle response\u003c\/li\u003e\n  \u003cli\u003eHelps maintain fuel economy by ensuring balanced combustion\u003c\/li\u003e\n  \u003cli\u003ePre-gapped plugs save installation time and reduce guesswork\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the construction and quality highlights of the NPAUTO UF550 kit?\u003c\/h3\u003e\n\u003cp\u003eThese coils and plugs are manufactured to high-quality standards using premium materials intended to meet or exceed OEM dimensions and performance. The coils deliver stable high-voltage output and the plugs are pre-gapped for correct electrode spacing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePrecision-molded coil housing for secure fit and heat resistance\u003c\/li\u003e\n  \u003cli\u003eRobust internal windings and insulation for reliable spark delivery\u003c\/li\u003e\n  \u003cli\u003ePre-gapped spark plugs matched to OEM gap specifications\u003c\/li\u003e\n  \u003cli\u003ePackaged as a 6-coil and 6-plug set for full-bank replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is installation and what should I check before buying?\u003c\/h3\u003e\n\u003cp\u003eInstallation is a medium-difficulty DIY or technician task: coils and spark plugs are accessible on most V6 engines but may require basic tools and care to avoid cross-threading plugs. Confirm the kit's compatibility with your vehicle's engine code and check torque specifications during installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInspect compatibility chart and match part numbers before purchase\u003c\/li\u003e\n  \u003cli\u003eUse a torque wrench and proper socket to avoid damaging threads\u003c\/li\u003e\n  \u003cli\u003eReplace all six coils\/plugs simultaneously for best results\u003c\/li\u003e\n  \u003cli\u003eConsider dielectric grease on coil boots for moisture prevention\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This NPAUTO UF550 6-coil and 6-plug set is aimed at owners and mechanics of Nissan and Infiniti vehicles with the 3.5L V6 who want a complete, OEM-grade ignition refresh. It's suitable for those troubleshooting misfires, poor idle, weak starts, or anyone performing scheduled ignition maintenance and preferring a matched, pre-gapped set to ensure uniform performance across all cylinders.\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: Are these coils and plugs pre-gapped and ready to install?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the spark plugs are pre-gapped and the kit includes six coils and six plugs for immediate installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this kit cure a persistent engine misfire?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: If misfires are caused by failed coils or fouled plugs, replacing the full set often resolves the issue; confirm diagnostics first.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"NPAUTO","offers":[{"title":"Default Title","offer_id":48081431855262,"sku":"B0B8Z41CLB","price":139.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/npauto-front-packaging-uf550-coil-plug-set.jpg?v=1785804143","url":"https:\/\/northtrailauto.ca\/products\/npauto-ignition-coil-and-spark-plug-kit-for-3-5l-v6-nissan-infiniti-6-pack-uf550-pre-gapped-plugs","provider":"North Trail Auto","version":"1.0","type":"link"}