{"title":"Ignition Coils for Toyota Highlander","description":"\u003ch2\u003eIgnition Coils Compatible with Toyota Highlander\u003c\/h2\u003e\n\u003cp\u003eA Highlander that stumbles on a merge usually has a coil boot that has gone soft from heat. These coil and iridium spark plug kits cover select Toyota Highlander applications from 2001-2021. The 2001-2007 years have both a 2.4L listing and a combined 3.0L and 3.3L listing. The two 3.5L bands are not the same kit. Pair the job with \u003ca href=\"\/collections\/toyota-air-intakes\"\u003ecold air intakes compatible with Toyota\u003c\/a\u003e or a \u003ca href=\"\/collections\/toyota-performance-tune\"\u003eperformance tune for Toyota\u003c\/a\u003e. See \u003ca href=\"\/collections\/toyota-ignition\"\u003eignition parts for Toyota\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eSelect Highlander Years and Engines\u003c\/h3\u003e\n\u003cp\u003eOnly the 2008-2016 title says 3.5L V6. The 2017-2019 3.5L title does not. The 2020-2021 2.5L title does not say I4. The 2009-2019 2.7L title does say I4.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2.4L:\u003c\/strong\u003e Highlander 2001-2007\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3.0L and 3.3L:\u003c\/strong\u003e Highlander 2001-2007\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3.3L:\u003c\/strong\u003e Highlander 2008-2010\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2.7L I4:\u003c\/strong\u003e Highlander 2009-2019\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3.5L V6:\u003c\/strong\u003e Highlander 2008-2016\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3.5L:\u003c\/strong\u003e Highlander 2017-2019\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2.5L:\u003c\/strong\u003e Highlander 2020-2021\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch3\u003eWhich Highlander years and engines are covered?\u003c\/h3\u003e\n\u003cp\u003eSelect applications from 2001-2021, not every Highlander. Listings are 2.4L (2001-2007), 3.0L and 3.3L together (2001-2007), 3.3L (2008-2010), 2.7L I4 (2009-2019), 3.5L V6 (2008-2016), 3.5L (2017-2019), and 2.5L (2020-2021). The 2008-2010 3.3L kit is not the 2001-2007 3.0L and 3.3L kit. A 2.4L kit is not the 3.5L part. No hybrid displacement is named on these titles.\u003c\/p\u003e\n\n\u003ch3\u003eWill new Highlander coils clear a misfire?\u003c\/h3\u003e\n\u003cp\u003eOften, when the cause is weak spark. P0300 means the misfire is moving between cylinders. A single-cylinder code points at one hole. The 2008-2016 3.5L V6 can show codes through P0306. The 2017-2019 3.5L listing does not say V6, so do not assume it is the same kit. Coils and plugs fix the spark side only.\u003c\/p\u003e\n\n\u003ch3\u003eWhy do these Highlander listings include iridium plugs?\u003c\/h3\u003e\n\u003cp\u003eEvery Highlander title in this set names iridium spark plugs with the coils. A worn plug raises the load on the coil. Installing the matched set keeps the gap and the coil on the same job. There is no coil-only Highlander listing here. Confirm the year, because 2001-2007 has two different engine kits.\u003c\/p\u003e","products":[{"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"},{"product_id":"ignition-coil-iridium-spark-plugs-for-toyota-highlander-2009-2019-2-7l-i4","title":"Ignition Coil \u0026 Iridium Spark Plugs for Toyota Highlander (2009-2019) 2.7L I4","description":"\u003ch2\u003eHigh-Output Ignition Coil \u0026amp; Iridium Spark Plugs for 2009-2019 Toyota Highlander (1AR-FE \/ XU40\/XU50)\u003c\/h2\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eDirect Replacement Ignition Upgrade:\u003c\/strong\u003e Replaces degrading factory ignition coils and standard plugs with high-output coils and iridium-tipped spark plugs to restore spark energy, eliminate misfires, and stabilize the fuel burn process.\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Stock Highlander 1AR-FE Weakness\u003c\/h3\u003e\n  \u003cp\u003eOver time and mileage, the factory ignition coils on the 2.7L 1AR-FE suffer from thermal degradation due to constant exposure to cylinder head heat. This cyclic heat soak compromises the internal epoxy and winding insulation, leading to voltage leaks and a weakened spark. Paired with worn factory spark plugs where the electrode gap has widened beyond specification, the engine experiences incomplete combustion. Mechanics often diagnose this cascading failure as a rough idle, hesitation under load, diminished fuel economy, or intermittent P0300-series misfire codes, especially during cold starts or heavy acceleration demands.\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n  \u003cp\u003eThis ignition upgrade kit directly combats thermal breakdown and voltage drop. The new high-output ignition coils are manufactured with premium copper wire windings and high-dielectric epoxy, ensuring consistent primary-to-secondary voltage transfer even under extreme engine bay temperatures. They provide a precise, high-energy spark directly to the combustion chamber. Paired with performance iridium spark plugs, which feature an ultra-fine center electrode and high melting point, this kit delivers superior spark centralization. The result is a cleaner, more complete fuel burn, translating to restored factory horsepower, improved torque delivery across the RPM range, and rock-solid reliability without risking pre-ignition or fouling.\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;\"\u003e2009-2019 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;\"\u003e1AR-FE \/ 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;\"\u003e187 hp \/ 186 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, C1601SPEC, EBC1039, CUF487, EBC1214, EBC1832, 26C1034, 90919A2005, C1601VC, 5C1653, IGC0176, C1596VC\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n \n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e2009 Toyota Highlander 2.7L I4\u003c\/li\u003e\n    \u003cli\u003e2010 Toyota Highlander 2.7L I4\u003c\/li\u003e\n    \u003cli\u003e2011 Toyota Highlander 2.7L I4\u003c\/li\u003e\n    \u003cli\u003e2012 Toyota Highlander 2.7L I4\u003c\/li\u003e\n    \u003cli\u003e2013 Toyota Highlander 2.7L I4\u003c\/li\u003e\n    \u003cli\u003e2014 Toyota Highlander 2.7L I4\u003c\/li\u003e\n    \u003cli\u003e2015 Toyota Highlander 2.7L I4\u003c\/li\u003e\n    \u003cli\u003e2016 Toyota Highlander 2.7L I4\u003c\/li\u003e\n    \u003cli\u003e2017 Toyota Highlander 2.7L I4\u003c\/li\u003e\n    \u003cli\u003e2018 Toyota Highlander 2.7L I4\u003c\/li\u003e\n    \u003cli\u003e2019 Toyota Highlander 2.7L I4\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eThe Toyota Reliability Standard\u003c\/h3\u003e\n  \u003cp\u003eEngineered to match the bulletproof reputation of Toyota's four-cylinder powerplants, this kit ensures steady performance and consistent power delivery for daily commuting and loaded family hauling without triggering a Check Engine Light (CEL).\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":48266406822136,"sku":"DS-EDEI4JSRO","price":144.95,"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-2009-2019-2-7l-i4-1.jpg?v=1776814606"},{"product_id":"ignition-coil-and-iridium-spark-plugs-for-toyota-highlander-2001-2007-3-0l-3-3l","title":"Ignition Coil and Iridium Spark Plugs for Toyota Highlander (2001-2007) 3.0L 3.3L","description":"\u003ch2\u003eDirect-Fit Ignition Coil and Iridium Spark Plug Kit for 2001-2007 Toyota Highlander\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Replaces degraded factory coil packs and worn spark plugs to eliminate engine misfires, stabilize idle, and restore primary ignition efficiency across all six cylinders.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Highlander Ignition Heat Soak Weakness\u003c\/h3\u003e\n\u003cp\u003eThe transverse layout of the 1MZ-FE and 3MZ-FE V6 engines subjects the rear cylinder bank (Bank 1) to extreme thermal trapping against the firewall. Over extended service intervals, OEM coil housing epoxy deteriorates from continuous heat cycling, causing dielectric breakdown, micro-arcing, and intermittent P0300–P0306 diagnostic trouble codes. Coupled with eroded ground electrodes on aging factory plugs, the ignition system requires higher secondary voltage to bridge the gap, leading to incomplete combustion and sluggish throttle response.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive overhaul kit features six heavy-duty ignition coils manufactured with high-conductivity copper primary and secondary windings encased in thermal-resistant dielectric resin. The direct-fit plug boots seal out oil vapor and moisture, preventing high-voltage flashover. Paired with six fine-wire iridium spark plugs, this kit provides a concentrated, low-resistance spark kernel capable of sustaining consistent combustion under high thermal loads without premature electrode erosion.\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\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;\"\u003e3.0L 1MZ-FE \/ 3.3L 3MZ-FE V6 \/ XU20 Chassis\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;\"\u003e220-230 hp \/ 222-242 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;\"\u003eUF267, 90919-02234, 90080-19016, C1175\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2001-2003 Toyota Highlander 3.0L V6 (1MZ-FE) - Base, Limited\u003c\/li\u003e\n  \u003cli\u003e2004-2007 Toyota Highlander 3.3L V6 (3MZ-FE) - Base, Limited, Sport\u003c\/li\u003e\n  \u003cli\u003e2006-2007 Toyota Highlander Hybrid 3.3L V6 (3MZ-FE)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Toyota Durability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to meet factory duty-cycle tolerances, this ignition set restores original V6 operational smoothness and reliable cold-start crank performance across everyday commuting and sustained highway towing.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50447754297592,"sku":"DS-EL8NCZLLX","price":116.95,"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-2001-2007-3-0l-3-3l-1.jpg?v=1788623270"},{"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"},{"product_id":"ignition-coil-and-iridium-spark-plugs-for-toyota-highlander-2008-2010-3-3l","title":"Ignition Coil and Iridium Spark Plugs for Toyota Highlander (2008-2010) 3.3L","description":"\u003ch2\u003eDirect-Fit Ignition Coil and Iridium Spark Plug Service Kit for 2008-2010 Toyota Highlander\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Replaces degraded factory coil packs and worn spark plugs with high-dielectric coil-on-plug assemblies and precision iridium plugs to restore proper combustion efficiency and eliminate misfires.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Highlander Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eThe transverse-mounted 3.3L V6 places the rear bank of ignition coils directly against the firewall, trapping radiant engine heat in a confined space. Over extended thermal cycles, the factory epoxy insulation and internal copper windings degrade, resulting in secondary voltage leakage, intermittent cylinder misfires under load, and carbon tracking along the plug boot. Combined with worn factory electrodes widening the spark gap, this breakdown forces the ignition system to demand higher primary voltage, leading to poor cold-start combustion, hesitations during hybrid-to-ICE transitions, and unburned fuel entering the catalytic converters.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis complete ignition kit features six reinforced coil-on-plug units engineered with high-conductivity oxygen-free copper windings and high-grade silicone boots to resist thermal breakdown and dielectric puncture. Matched with six laser-welded iridium spark plugs, the fine-wire center electrode design lowers the required breakdown voltage while providing superior erosion resistance compared to standard copper or platinum alternatives. Solid brass terminal connections prevent internal corrosion, ensuring instantaneous spark delivery and consistent flame front propagation across the entire RPM range.\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;\"\u003e2008-2010 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;\"\u003e3.3L 3MZ-FE V6 \/ XU40 (MHU48)\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 (Combined) \/ 212 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;\"\u003eUF267, IFR6T11, 90919-02234, 90080-19016, C1175\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 Hybrid 3.3L V6 (3MZ-FE)\u003c\/li\u003e\n  \u003cli\u003e2008 Toyota Highlander Hybrid Limited 3.3L V6 (3MZ-FE)\u003c\/li\u003e\n  \u003cli\u003e2009 Toyota Highlander Hybrid 3.3L V6 (3MZ-FE)\u003c\/li\u003e\n  \u003cli\u003e2009 Toyota Highlander Hybrid Limited 3.3L V6 (3MZ-FE)\u003c\/li\u003e\n  \u003cli\u003e2010 Toyota Highlander Hybrid 3.3L V6 (3MZ-FE)\u003c\/li\u003e\n  \u003cli\u003e2010 Toyota Highlander Hybrid Limited 3.3L V6 (3MZ-FE)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Toyota Reliability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to withstand the demanding stop-start drive cycles of Toyota hybrid powertrains, these ignition components maintain precise arc timing and zero misfire tolerances to preserve smooth electric-to-gas power delivery and protect catalytic converter life.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50451861963000,"sku":"DS-EL8DAKKSK","price":100.95,"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-2008-2010-3-3l-1.jpg?v=1788711444"},{"product_id":"ignition-coil-and-iridium-spark-plugs-for-toyota-highlander-2020-2021-2-5l","title":"Ignition Coil and Iridium Spark Plugs for Toyota Highlander (2020-2021) 2.5L","description":"\u003ch2\u003eDirect-Replacement Ignition Coil and Iridium Spark Plug Kit for 2020-2021 Toyota Highlander\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect Combustion Refresh:\u003c\/strong\u003e Restores high-voltage secondary ignition output and precise flame kernel propagation across all four cylinders in Toyota 2.5L Atkinson-cycle powertrains.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Highlander Coil Degradation\u003c\/h3\u003e\n\u003cp\u003eAggressive thermal cycling and high-frequency start-stop hybrid operating conditions place severe stress on factory ignition components. Over extended mileage, stock coil-on-plug boots and epoxy insulation suffer dielectric breakdown, leading to internal resistance drift, micro-arcing, and spark blowout under load. Worn plug gaps compound this issue, increasing primary circuit strain and causing rough hybrid-to-gas engine transitions, misfire diagnostic codes, and deteriorated thermal efficiency.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive tune-up kit features four direct-fit coil packs built with premium-grade internal copper windings and high-dielectric epoxy potting to eliminate internal shorting and voltage leakage. Fitted with direct-fit blade terminal connectors, the coils supply reliable high-energy discharge directly to four matching fine-wire iridium spark plugs. The corrosion-resistant iridium center electrodes withstand extreme combustion chamber heat, ensuring rapid spark initiation, stabilized idle quality, and complete fuel atomization.\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;\"\u003e2020-2021 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;\"\u003e2.5L A25A-FXS I4 \/ XU70\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;\"\u003e243 hp (Combined System) \/ 175 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;\"\u003eUF849, UF-849\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2020 Toyota Highlander 2.5L 4-Cylinder Hybrid (LE, XLE, Limited, Platinum)\u003c\/li\u003e\n  \u003cli\u003e2021 Toyota Highlander 2.5L 4-Cylinder Hybrid (LE, XLE, Limited, Platinum)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Toyota Reliability Standard\u003c\/h3\u003e\n\u003cp\u003eDesigned specifically to meet the high-efficiency demands of the Dynamic Force hybrid platform, this ignition service package delivers precise, misfire-free operation and smooth combustion without triggering diagnostic trouble codes.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50458165608696,"sku":"DS-E2V22VI7Y","price":105.95,"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-2020-2021-2-5l-1.jpg?v=1788793445"},{"product_id":"ignition-coil-and-iridium-spark-plugs-for-toyota-highlander-2017-2019-3-5l","title":"Ignition Coil and Iridium Spark Plugs for Toyota Highlander (2017-2019) 3.5L","description":"\u003ch2\u003eDirect-Fit Ignition Coil and Iridium Spark Plug Kit for 2017-2019 Toyota Highlander\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Ignition Coil and Iridium Spark Plug Kit replaces fatigued coil-on-plug boots and eroded electrodes on the 2017-2019 Toyota Highlander to eliminate misfires, stabilize idle, and restore peak combustion efficiency.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Toyota Highlander Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eUnder the transverse engine packaging of the \u003cstrong\u003eXU50\u003c\/strong\u003e chassis, the \u003cstrong\u003e2GR-FKS\u003c\/strong\u003e 3.5L V6 traps substantial radiant heat around the firewall-facing rear cylinder bank (cylinders 1, 3, and 5). Over time, thermal cycling degrades the factory coil's dielectric resin and silicone boots, creating micro-fractures that induce voltage leakage and secondary winding breakdown. Combined with gradual electrode erosion on aged spark plugs, the widened plug gap overburdens the coils, resulting in sluggish throttle response, erratic idle, and diagnostic trouble codes from \u003cstrong\u003eP0300\u003c\/strong\u003e to \u003cstrong\u003eP0306\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis complete six-cylinder ignition service kit features pencil coils constructed with high-grade magnetic silicon steel cores and temperature-resistant epoxy compounds to resist thermal breakdown. Reinforced silicone spark plug boots insulate against flashover and high-voltage arc loss under heavy engine load. Paired with fine-wire iridium spark plugs that require lower firing voltage while offering superior thermal conductivity, this direct-fit kit maintains optimal flame kernel development for Toyota's combined port and direct-injection (D-4S) combustion system.\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; margin-bottom: 20px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2017-2019 Toyota Highlander\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003e2GR-FKS\u003c\/strong\u003e \/ \u003cstrong\u003eXU50\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e295 hp \/ 263 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003e90919A2008\u003c\/strong\u003e, \u003cstrong\u003eUF796\u003c\/strong\u003e, \u003cstrong\u003e9091902273\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2017-2019 Toyota Highlander LE 3.5L V6\u003c\/li\u003e\n  \u003cli\u003e2017-2019 Toyota Highlander LE Plus 3.5L V6\u003c\/li\u003e\n  \u003cli\u003e2017-2019 Toyota Highlander XLE 3.5L V6\u003c\/li\u003e\n  \u003cli\u003e2017-2019 Toyota Highlander SE 3.5L V6\u003c\/li\u003e\n  \u003cli\u003e2017-2019 Toyota Highlander Limited 3.5L V6\u003c\/li\u003e\n  \u003cli\u003e2017-2019 Toyota Highlander Limited Platinum 3.5L V6\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the XU50 Highlander?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2017-2019 Toyota Highlander equipped with the \u003cstrong\u003e2GR-FKS\u003c\/strong\u003e engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the included iridium spark plugs pre-gapped for the 2GR-FKS engine?\u003c\/strong\u003e\u003cbr\u003e Yes, all six plugs arrive pre-gapped to factory tolerances for straightforward installation without gap manipulation.\u003c\/p\u003e\n\n\u003ch3\u003eThe Toyota Durability Standard\u003c\/h3\u003e\n\u003cp\u003eThe Highlander is engineered for dependable family transport and heavy hauling duty. Installing heat-resilient ignition components ensures clean burn efficiency under load, protects upstream catalytic converters from unburnt fuel damage, and maintains factory payload towing performance.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50594046116088,"sku":"DS-EZD9LOGN7","price":134.95,"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-2017-2019-3-5l-1.jpg?v=1790056317"}],"url":"https:\/\/performancechiptuning.com\/collections\/toyota-highlander-ignition.oembed","provider":"Performance Chip Tuning","version":"1.0","type":"link"}