{"product_id":"ignition-coil-and-iridium-spark-plugs-for-toyota-highlander-2001-2007-2-4l","title":"Ignition Coil and Iridium Spark Plugs for Toyota Highlander (2001-2007) 2.4L","description":"\u003ch2\u003eHigh-Dielectric Ignition Coil and Iridium Spark Plug Kit for 2001-2007 Toyota Highlander\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect-Fit Ignition Overhaul:\u003c\/strong\u003e Restores factory secondary ignition voltage and combustion efficiency across all four cylinders to eliminate misfires, rough idle, and hesitation under load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Highlander 2AZ-FE Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eOver extended thermal cycles, the factory coil-on-plug boots and epoxy insulation inside the deep spark plug wells of the 2AZ-FE engine experience severe dielectric breakdown. High engine bay operating temperatures degrade the internal secondary copper windings and cause micro-cracking in the phenolic resin casing. This thermal fatigue results in high-voltage arcing, carbon tracking along the plug insulator, increased coil resistance, and intermittent P0300-P0304 misfire codes, particularly during cold starts and sustained highway acceleration.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis ignition service kit pairs four heavy-duty coil-on-plug assemblies featuring high-grade electrolytic copper windings with fine-wire iridium spark plugs. The coils utilize reinforced thermoplastic housings and high-temperature silicone boots to prevent electrical leakage and shield against thermal degradation. The fine-wire 0.6mm iridium center electrodes drastically reduce required firing voltage, maximize spark kernel development, and ensure complete fuel atomization while resisting gap erosion under continuous thermal stress.\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;\"\u003e2001-2007 Toyota Highlander 2.4L\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;\"\u003e2.4L 2AZ-FE \/ XU20 (ACU20, ACU25)\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;\"\u003e155-160 hp \/ 163-165 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;\"\u003eUF333, 90919-02244, 90919-02243, 90919-02266, 90080-19023, 9091902244\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2001-2007 Toyota Highlander Base 2.4L L4 (2AZ-FE) FWD \/ AWD\u003c\/li\u003e\n  \u003cli\u003eOE \u0026amp; Interchange Reference: UF333, 90919-02244, 90919-02243, 90919-02266, 90080-19023, 9091902244\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Toyota Reliability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to match precise OEM electrical dwell times and resistance parameters, this direct-replacement assembly prevents ECU fault triggers and delivers consistent ignition performance for long-term daily commuter reliability.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50448864018680,"sku":"DS-EE4O2MSEH","price":77.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-and-iridium-spark-plugs-for-toyota-highlander-2001-2007-2-4l-1.jpg?v=1788662346","url":"https:\/\/performancechiptuning.com\/fr\/products\/ignition-coil-and-iridium-spark-plugs-for-toyota-highlander-2001-2007-2-4l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}