{"product_id":"kacuyelin-uf549-ignition-coil-pack-double-iridium-spark-plug-kit-set-of-4-direct-fit-oem-grade","title":"KacuYelin UF549 Ignition Coil Pack \u0026 Double‑Iridium Spark Plug Kit Set of 4 — Direct‑Fit OEM‑Grade","description":"\u003cstrong\u003eA complete ignition upgrade kit: four KacuYelin UF549 coil packs paired with four double-iridium spark plugs engineered to restore reliable spark, smoother idling, and improved fuel efficiency for compatible Nissan and Infiniti 4‑cylinder engines.\u003c\/strong\u003e\n\n\u003cp\u003eThis kit combines direct-fit ignition coils and premium double‑iridium spark plugs designed as a one‑stop replacement for worn or failing ignition components. Built to match OEM fitment and electrical output, the UF549 coil packs use high‑purity copper windings and temperature‑resistant materials to reduce misfires and coil deterioration. The matching double‑iridium spark plugs use continuous laser welding and high‑alumina ceramic insulation for longer life and more consistent combustion across a wide range of driving conditions.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles and engines does this kit fit?\u003c\/h3\u003e\n\u003cp\u003eThis set is designed for many Nissan and Infiniti models with 4‑cylinder engines from roughly 2005 through 2020. It replaces factory part numbers such as 22448ED000 and C1696 and fits common displacements like 1.6L, 1.8L, 2.0L and 2.5L.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible models include Altima, Cube, Frontier, NV200, Rogue, Sentra, Versa, Versa Note, and select Infiniti models\u003c\/li\u003e\n  \u003cli\u003eCheck year, model, engine size and aspiration to confirm exact compatibility\u003c\/li\u003e\n  \u003cli\u003eDirect plug‑and‑play replacements for specified OEM numbers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do the coil packs improve ignition performance?\u003c\/h3\u003e\n\u003cp\u003eThe UF549 coils use German‑imported copper windings and a silicon steel core to deliver stable high voltage while resisting oxidation and heat breakdown. That stability helps reduce misfires, rough idle and intermittent no‑start conditions caused by degraded coils.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh‑purity copper windings for efficient power transfer\u003c\/li\u003e\n  \u003cli\u003eEpoxy resin and corrosion‑resistant materials for long life\u003c\/li\u003e\n  \u003cli\u003eEngineered to match OE electrical output for consistent firing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat benefits do the double‑iridium spark plugs provide?\u003c\/h3\u003e\n\u003cp\u003eThese plugs use a 360° continuous laser weld and cold extrusion on the center electrode with high iridium content for stronger spark concentration and extended wear life. High‑density alumina ceramic insulators maintain excellent heat resistance and electrical isolation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUp to 90% iridium content for superior erosion resistance\u003c\/li\u003e\n  \u003cli\u003e360° laser welding for focused, reliable sparks\u003c\/li\u003e\n  \u003cli\u003eRated longevity typically in the 80,000–120,000 mile range under normal use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill installing this kit affect fuel economy and emissions?\u003c\/h3\u003e\n\u003cp\u003eReplacing worn coils and plugs can restore efficient combustion and reduce incomplete burning that raises fuel use and emissions. While results vary by vehicle and driving habits, improved ignition consistency typically reduces rough running and can help optimize MPG.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMore accurate ignition timing and stronger sparks improve fuel burn\u003c\/li\u003e\n  \u003cli\u003eMay reduce engine symptoms like lack of power and increased fuel consumption\u003c\/li\u003e\n  \u003cli\u003eDesigned to meet EPA emissions expectations when installed correctly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Drivers and DIY mechanics who own compatible Nissan or Infiniti 4‑cylinder models and want a direct‑fit, higher‑durability replacement for aging ignition coils and spark plugs. This kit is suited to anyone repairing misfires, restoring drivability, or preferring longer service intervals without changing OEM wiring or connectors. Always confirm vehicle year, model, engine and OEM part references before purchasing and consult a professional installer if unsure.\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: How do I confirm this kit fits my car?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Compare your vehicle year, model, engine size and OEM part numbers (e.g., 22448ED000, C1696) to the fitment list before purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What is the expected life of the iridium spark plugs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Under normal driving they typically last 80,000–120,000 miles depending on conditions and maintenance.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"KacuYelin","offers":[{"title":"Default Title","offer_id":48080830857374,"sku":"B0F1FRJ5V6","price":76.39,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/kacuyelin-front-packaging_229c04c7-15d1-49ac-9c4a-1d2cece736af.jpg?v=1785789406","url":"https:\/\/northtrailauto.ca\/products\/kacuyelin-uf549-ignition-coil-pack-double-iridium-spark-plug-kit-set-of-4-direct-fit-oem-grade","provider":"North Trail Auto","version":"1.0","type":"link"}