{"product_id":"ignition-coil-iridium-spark-plugs-for-toyota-highlander-2008-2016-3-5l-v6","title":"Ignition Coil \u0026 Iridium Spark Plugs for Toyota Highlander (2008-2016) 3.5L V6","description":"\u003ch2\u003eHigh-Output Ignition Coil \u0026amp; Iridium Spark Plugs for 2008-2016 Toyota Highlander (2GR-FE \/ XU40 \u0026amp; XU50)\u003c\/h2\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eDirect OEM replacement ignition coils and performance iridium spark plugs designed to restore optimal combustion efficiency and eliminate misfires in the 3.5L V6.\u003c\/strong\u003e\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Stock Highlander Ignition Weakness\u003c\/h3\u003e\n  \u003cp\u003eOver time, the factory ignition coils on the XU40 and XU50 Toyota Highlander 3.5L V6 are prone to thermal degradation due to their positioning atop the transverse-mounted 2GR-FE engine. The rear bank (cylinders 1, 3, and 5) is notoriously difficult to access and suffers from elevated ambient heat trapped against the firewall. This continuous heat cycling degrades the internal epoxy potting and secondary windings inside the OEM coils, leading to internal shorting, weak spark delivery, and eventual P0300-series misfire codes. Furthermore, aging standard spark plugs increase the required firing voltage, compounding the stress on already weakened coils and resulting in poor fuel burn, rough idling, and a noticeable loss of low-end torque.\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n  \u003cp\u003eThis comprehensive ignition service kit bundles six high-energy ignition coils and six precision-gapped iridium spark plugs to permanently resolve 2GR-FE ignition failures. The upgraded coils feature premium copper wire windings and high-temperature dielectric epoxy that resists thermal breakdown and electrical arcing, even in the restrictive firewall-facing rear cylinder bank. Paired with ultra-fine wire iridium center electrodes, these spark plugs require less voltage to bridge the gap, which reduces the electrical load on the ignition coils while ensuring a more complete, consistent fuel burn. This combination restores factory horsepower, improves throttle response, prevents unburned fuel from damaging the catalytic converters, and significantly extends the service interval over traditional alternatives.\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;\"\u003e2008-2016 Toyota Highlander\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;\"\u003e2GR-FE V6 \/ XU40, XU50\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;\"\u003e270 hp \/ 248 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;\"\u003e673-1309, 23-0480, 23-0525, 52-1894, 52-2092, 90919A2005\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n \n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e2008 Toyota Highlander 3.5L V6\u003c\/li\u003e\n    \u003cli\u003e2009 Toyota Highlander 3.5L V6\u003c\/li\u003e\n    \u003cli\u003e2010 Toyota Highlander 3.5L V6\u003c\/li\u003e\n    \u003cli\u003e2011 Toyota Highlander 3.5L V6\u003c\/li\u003e\n    \u003cli\u003e2012 Toyota Highlander 3.5L V6\u003c\/li\u003e\n    \u003cli\u003e2013 Toyota Highlander 3.5L V6\u003c\/li\u003e\n    \u003cli\u003e2014 Toyota Highlander 3.5L V6\u003c\/li\u003e\n    \u003cli\u003e2015 Toyota Highlander 3.5L V6\u003c\/li\u003e\n    \u003cli\u003e2016 Toyota Highlander 3.5L V6\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eThe Toyota Reliability Standard\u003c\/h3\u003e\n  \u003cp\u003eBy upgrading to premium iridium ignition components, you ensure your Highlander maintains the steadfast towing capability and long-term reliability required for daily hauling and extended road trips, keeping the check engine light off and the 2GR-FE engine running flawlessly.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":48263143063800,"sku":"DS-E9FD3YQ4M","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-highlander-2008-2016-3-5l-v6-1.jpg?v=1776746390","url":"https:\/\/performancechiptuning.com\/fr\/products\/ignition-coil-iridium-spark-plugs-for-toyota-highlander-2008-2016-3-5l-v6","provider":"Performance Chip Tuning","version":"1.0","type":"link"}