{"product_id":"ignition-coil-and-iridium-spark-plugs-for-toyota-4runner-1999-2000-2-7l","title":"Ignition Coil and Iridium Spark Plugs for Toyota 4Runner (1999-2000) 2.7L","description":"\u003ch2\u003eDirect-Fit Ignition Coil and Iridium Spark Plug Kit for 1999-2000 Toyota 4Runner\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrimary Function:\u003c\/strong\u003e Restores factory secondary ignition output and resolves multi-cylinder misfires on 2.7L 3RZ-FE engines under continuous thermal load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock 4Runner Ignition Degradation\u003c\/h3\u003e\n\u003cp\u003eFactory coil packs on the N180 platform endure severe thermal cycling within the deep cylinder head plug wells. Over decades of operation, OEM insulation epoxy degrades and micro-fractures develop across the housing. This causes dielectric leakage, primary winding resistance drift, and high-load spark blowout. Simultaneously, standard nickel-alloy plugs experience electrode erosion, increasing the required arc voltage and placing excessive electrical strain on aging coil packs.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis direct-replacement ignition package upgrades both the primary induction and secondary discharge stages. The four coil-on-plug units utilize heavy-gauge internal copper windings, direct-fit blade terminals, and high-dielectric silicone boots that isolate secondary voltage and resist flashover. Paired with fine-wire iridium center-electrode spark plugs, the system reduces required ionization energy, stabilizes combustion flame kernels, and ensures dependable dwell timing across all four cylinders.\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;\"\u003e1999-2000 Toyota 4Runner\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;\"\u003e3RZ-FE (2.7L I4) \/ N180\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;\"\u003e150 hp \/ 177 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;\"\u003eUF323, UF-323, 90919-02237\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1999 Toyota 4Runner Base 2.7L L4 (3RZ-FE Engine \/ N180 Chassis)\u003c\/li\u003e\n  \u003cli\u003e2000 Toyota 4Runner Base 2.7L L4 (3RZ-FE Engine \/ N180 Chassis)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Toyota Truck Caliber\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle severe-duty off-road and towing conditions, this kit restores reliable cold-cranking performance, smooth idle balance, and consistent throttle response under heavy powertrain load.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50452869906680,"sku":"DS-EYKJFRC81","price":111.95,"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-4runner-1999-2000-2-7l-1.jpg?v=1788723758","url":"https:\/\/performancechiptuning.com\/es\/products\/ignition-coil-and-iridium-spark-plugs-for-toyota-4runner-1999-2000-2-7l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}