{"product_id":"x4xz-ignition-coil-pack-double-iridium-spark-plug-kit-4-pack-for-kia-hyundai-direct-fit-long-life","title":"X4XZ Ignition Coil Pack \u0026 Double Iridium Spark Plug Kit — 4-Pack for Kia\/Hyundai, Direct-Fit Long-Life","description":"\u003cp\u003e\u003cstrong\u003eThe X4XZ UF651 ignition coil pack paired with NGK 9723 double iridium spark plugs is a direct-fit replacement kit designed to restore reliable spark delivery and consistent combustion for compatible Kia and Hyundai 4-cylinder models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis complete 4-pack contains four ignition coil packs and four long-life double iridium spark plugs engineered to match or exceed OE specifications for fit and function. The components are built to resist heat and electrical noise while delivering stable spark energy, aiming to reduce misfires, improve throttle response, and help return fuel economy to expected levels when worn units are replaced. Confirm vehicle compatibility against the provided application list and the second product image before purchase.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles does this kit fit?\u003c\/h3\u003e\n\u003cp\u003eThis kit is manufactured to fit many Hyundai and Kia 4-cylinder engines from model years roughly 2011–2021. Fitment varies by model and production year, so visual verification of connector style is recommended.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHyundai: Elantra (2011–2016 GLS\/Limited\/SE 1.8L), Elantra GT (2014–2020 2.0L), Tucson (2014–2021 2.0L).\u003c\/li\u003e\n  \u003cli\u003eKia: Forte (2014–2016 1.8L\/2.0L, Forte Koup 2.0L), Forte5 (2014–2018 2.0L), Soul (2012–2019 2.0L).\u003c\/li\u003e\n  \u003cli\u003eCheck for 2-pin vs. 4-pin coil connectors in 2017–2018 models before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these ignition coils and spark plugs improve engine performance?\u003c\/h3\u003e\n\u003cp\u003eThe ignition coils and double iridium spark plugs in this kit restore efficient ignition timing and energy transfer, which helps reduce misfires and rough idling. Consistent spark reduces incomplete combustion and can lead to steadier throttle response and more predictable acceleration.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDouble iridium tips maintain a stable spark and longer service life—rated up to approximately 100,000 km under typical conditions.\u003c\/li\u003e\n  \u003cli\u003eCoil design includes ferrite noise suppression to limit radio interference and ensure reliable signal delivery.\u003c\/li\u003e\n  \u003cli\u003eThermoplastic coil connectors resist thermal cycling and reduce fracture risk during repeated heating and cooling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the build and quality features to expect?\u003c\/h3\u003e\n\u003cp\u003eEach coil and spark plug is constructed with materials chosen to withstand engine heat and electrical stress. The coils use stainless-steel springs and internal suppressors; the plugs feature dual iridium electrodes for longevity and stable gap performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOE-referenced part numbers: UF651 coil compatible with NGK 9723 spark plug.\u003c\/li\u003e\n  \u003cli\u003ePremium materials designed to resist corrosion, wear, and thermal degradation.\u003c\/li\u003e\n  \u003cli\u003eEngineered for straightforward installation—direct-fit replacement with no modification required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and what’s included in the box?\u003c\/h3\u003e\n\u003cp\u003eInstallation is intended to be straightforward for a technician or mechanically inclined DIYer. The set is supplied with four ignition coils and four double iridium spark plugs—no printed manual included, but many users follow factory service procedures or online tutorials.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncluded: 4 x ignition coil packs, 4 x NGK 9723 double iridium spark plugs.\u003c\/li\u003e\n  \u003cli\u003eNot included: instruction manual—use factory torque specs and gap checks during installation.\u003c\/li\u003e\n  \u003cli\u003eAfter-sales support: 24-hour customer service and a 1-year product service warranty from X4XZ.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: This replacement kit is intended for owners and technicians servicing compatible Hyundai and Kia compact vehicles that are experiencing ignition-related issues such as misfires, rough idle, or decreased fuel economy. Choose this kit if you want a direct-fit, longer-life spark plug option (double iridium) paired with coils designed to minimize interference and withstand repeated thermal cycles. Confirm connector type and part fitment for your specific model year before ordering to ensure compatibility.\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 direct replacements for my Hyundai or Kia?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, they are direct-fit for the listed Hyundai and Kia models—verify connector type and model year before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long do the double iridium spark plugs last?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Under typical conditions they are rated for about 100,000 km, depending on driving and maintenance.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"X4XZ","offers":[{"title":"Default Title","offer_id":48080989421726,"sku":"B0CB9THKK7","price":79.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/x4xz-uf651-pack-front-view.jpg?v=1785794026","url":"https:\/\/northtrailauto.ca\/products\/x4xz-ignition-coil-pack-double-iridium-spark-plug-kit-4-pack-for-kia-hyundai-direct-fit-long-life","provider":"North Trail Auto","version":"1.0","type":"link"}