{"product_id":"ignition-coil-iridium-spark-plugs-for-toyota-4runner-2003-2009-4-7l-v8","title":"Ignition Coil \u0026 Iridium Spark Plugs for Toyota 4Runner (2003-2009) 4.7L V8","description":"\u003ch2\u003eHigh-Energy Ignition Coil \u0026amp; Iridium Spark Plugs for 2003-2009 Toyota 4Runner (2UZ-FE \/ N210)\u003c\/h2\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eDirect Replacement Ignition Kit:\u003c\/strong\u003e Restores lost power and eliminates misfires by providing a consistent, high-voltage spark to the 2UZ-FE cylinders under heavy load and daily driving conditions.\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Stock 4Runner Ignition Degradation\u003c\/h3\u003e\n  \u003cp\u003eOver thousands of thermal cycles, the OEM ignition coils on the 4.7L 2UZ-FE engine suffer from internal winding resistance breakdown and degraded epoxy potting. This manifests as weak spark, rough idle, increased fuel consumption, and eventual P0300-series misfire codes. Furthermore, standard spark plug electrodes erode over time, widening the spark gap. This increased gap forces the aging coils to work harder to jump the arc, compounding the thermal stress on the internal coil drivers and leading to premature failure, especially under towing or high-load conditions where combustion chamber pressures are highest.\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n  \u003cp\u003eThis ignition service kit resolves weak spark issues by combining heavily insulated, high-output ignition coils with performance iridium spark plugs. The upgraded coils feature premium copper windings with a specialized high-temperature dielectric epoxy potting, effectively shielding internal components from the V8's notorious valley heat soak. This ensures maximum voltage transfer without arching or cross-firing. Paired with the ultra-fine iridium center electrodes of the included spark plugs, the system requires less voltage to bridge the gap while generating a hotter, more concentrated spark kernel. This optimizes combustion efficiency, improves throttle response, and provides exceptional resistance to electrode wear and oxidation for long-term reliability.\u003c\/p\u003e\n  \n  \u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e2003-2009 Toyota 4Runner\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eEngine \/ Chassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e2UZ-FE 4.7L V8 \/ N210 Series (UZN210\/UZN215)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eStock Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e235-260 hp \/ 306-320 lb-ft (Approx)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e9091902230\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n \n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e2003 Toyota 4Runner 4.7L V8\u003c\/li\u003e\n    \u003cli\u003e2004 Toyota 4Runner 4.7L V8\u003c\/li\u003e\n    \u003cli\u003e2005 Toyota 4Runner 4.7L V8\u003c\/li\u003e\n    \u003cli\u003e2006 Toyota 4Runner 4.7L V8\u003c\/li\u003e\n    \u003cli\u003e2007 Toyota 4Runner 4.7L V8\u003c\/li\u003e\n    \u003cli\u003e2008 Toyota 4Runner 4.7L V8\u003c\/li\u003e\n    \u003cli\u003e2009 Toyota 4Runner 4.7L V8\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eThe Toyota Durability Standard\u003c\/h3\u003e\n  \u003cp\u003eEngineered for the demands of off-road trails and heavy towing, this ignition kit restores the legendary reliability of the 2UZ-FE, ensuring consistent torque delivery and preventing mid-trip misfires.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":48262497468664,"sku":"DS-ETDAUCVIO","price":209.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-iridium-spark-plugs-for-toyota-4runner-2003-2009-4-7l-v8-1.jpg?v=1776723439","url":"https:\/\/performancechiptuning.com\/products\/ignition-coil-iridium-spark-plugs-for-toyota-4runner-2003-2009-4-7l-v8","provider":"Performance Chip Tuning","version":"1.0","type":"link"}