{"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","url":"https:\/\/performancechiptuning.com\/products\/ignition-coil-and-iridium-spark-plugs-for-toyota-highlander-2020-2021-2-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}