{"product_id":"ignition-coil-spark-plugs-for-toyota-sequoia-2001-2004-4-7l","title":"Ignition Coil + Spark Plugs for Toyota Sequoia (2001-2004) 4.7L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Ignition Coil \u0026amp; Platinum Spark Plug Kit for 2001-2004 Toyota Sequoia (UCK35\/UCK45)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Ignition Coil and Spark Plug Kit replaces worn factory ignition components on the 2001-2004 Toyota Sequoia to eliminate cylinder misfires, restore fuel economy, and stabilize combustion under load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Toyota Sequoia Ignition Degradation\u003c\/h3\u003e\n\u003cp\u003eUnder repeated thermal cycling, the factory coil-on-plug units on the \u003cstrong\u003e2UZ-FE\u003c\/strong\u003e engine suffer from dielectric breakdown and micro-cracking within the internal epoxy resin. High underhood temperatures degrade the silicone boot seals, allowing moisture intrusion and secondary voltage leakage to the spark plug tube walls. Simultaneously, electrode erosion on aged spark plugs increases the required firing voltage, placing excess impedance on aging factory \u003cstrong\u003eUF230\u003c\/strong\u003e coils. This manifests as hesitation under acceleration, erratic idle, reduced towing torque, and persistent P0300–P0308 diagnostic trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis complete refresh kit restores secondary ignition stability using high-temp resistant components engineered for the demands of the 4.7L V8 platform. The replacement coils feature reinforced magnetic cores, high-grade copper primary and secondary windings, and high-dielectric epoxy potting to withstand heavy thermal loads without internal arc-over. Paired with matched platinum spark plugs featuring fine-wire center electrodes, this setup lowers the required breakdown voltage, minimizes quenching, and ensures clean flame kernel propagation during cold starts and high-load towing.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e8 Energy Ignition Coils (Replacement for UF230)\u003c\/li\u003e\n  \u003cli\u003e8 Platinum Spark Plugs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\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;\"\u003e2001-2004 Toyota Sequoia\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;\"\u003e2UZ-FE \/ UCK35 (2WD), UCK45 (4WD)\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;\"\u003e240 hp \/ 315 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;\"\u003eUF230\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2001-2004 Toyota Sequoia SR5 4.7L V8\u003c\/li\u003e\n  \u003cli\u003e2001-2004 Toyota Sequoia Limited 4.7L V8\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the UCK35\/UCK45 Sequoia?\u003c\/h4\u003e\n\u003cp\u003eYes, this kit is engineered specifically for the 2001-2004 Toyota Sequoia equipped with the non-VVT-i \u003cstrong\u003e2UZ-FE\u003c\/strong\u003e 4.7L V8 engine. \u003cstrong\u003eThis kit does not fit 2005 and newer VVT-i models or other engine variants.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eAre spark plug wires included with this kit?\u003c\/h4\u003e\n\u003cp\u003eNo, the 4.7L \u003cstrong\u003e2UZ-FE\u003c\/strong\u003e utilizes an independent coil-on-plug design with direct harness connectors, eliminating traditional secondary spark plug wires entirely.\u003c\/p\u003e\n\n\u003ch3\u003eThe Toyota Endurance Standard\u003c\/h3\u003e\n\u003cp\u003eThe first-generation Sequoia is built for severe-duty hauling, payload carrying, and high-mileage durability. Refreshing both coils and plugs simultaneously guarantees uniform cylinder-to-cylinder resistance, protecting your catalytic converters and ensuring maximum torque delivery when pulling heavy loads.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67562508321016,"sku":"DS-EW967UMDU","price":166.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-spark-plugs-for-toyota-sequoia-2001-2004-4-7l-1.jpg?v=1790982872","url":"https:\/\/performancechiptuning.com\/de\/products\/ignition-coil-spark-plugs-for-toyota-sequoia-2001-2004-4-7l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}