{"product_id":"ignition-coil-iridium-spark-plugs-for-toyota-4runner-fj-cruiser-2010-2013-4-0l-v6","title":"Ignition Coil \u0026 Iridium Spark Plugs for Toyota 4Runner FJ Cruiser (2010-2013) 4.0L V6","description":"\u003ch2\u003eHigh-Output Ignition Coil \u0026amp; Iridium Spark Plug Kit for 2010-2013 Toyota FJ Cruiser (1GR-FE \/ GSJ15)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect-fit replacement ignition upgrade designed to restore factory spark energy and resolve misfire codes on aging 4.0L V6 engines.\u003c\/strong\u003e This complete package replaces degraded OEM ignition coils and worn spark plugs to optimize fuel burn, maintain consistent idle stability, and deliver reliable voltage under heavy engine load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock 1GR-FE Ignition Degradation\u003c\/h3\u003e\n\u003cp\u003eAs the 4.0L 1GR-FE logs higher mileage, the factory ignition coils suffer from prolonged thermal cycling and heat soak within the engine bay. The internal epoxy potting compounds break down over time, leading to micro-cracking and parasitic voltage leaks. Simultaneously, factory spark plug electrodes erode, increasing the gap and forcing the ignition coils to work harder to bridge it. This combined degradation results in weak spark delivery, manifesting as rough idling, sluggish throttle response, unburnt fuel (decreased MPG), and eventual P0300-series misfire codes under load or during acceleration.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis matched ignition coil and iridium spark plug set eliminates ignition-related performance drops by upgrading the engine's spark delivery network. The new ignition coils feature high-grade copper wire windings and reinforced dielectric boots, shielding against voltage bleed and resisting extreme engine bay temperatures. Coupled with performance iridium spark plugs, which utilize an ultra-fine center electrode, this kit requires less firing voltage while providing a concentrated, hotter spark. The result is a more complete combustion event, restoring the engine's original horsepower and torque output, improving throttle tip-in, and ensuring long-term reliability under severe operating conditions.\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;\"\u003e2010-2013 Toyota FJ Cruiser \u0026amp; 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;\"\u003e1GR-FE V6 \/ GSJ15\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;\"\u003e260 hp \/ 271 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 \/ 90919A2005\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2010-2013 Toyota FJ Cruiser 4.0L V6\u003c\/li\u003e\n  \u003cli\u003e2010-2013 Toyota 4Runner 4.0L V6\u003c\/li\u003e\n  \u003cli\u003eInterchange Part Numbers: 673-1309, 23-0480, 23-0525, 52-1894, 52-2092, C1601SPEC, EBC1039, CUF487, EBC1214, EBC1832, 26C1034, 90919A2005, C1601VC, 5C1653, IGC0176, C1596VC\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Toyota Durability Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt to handle the harsh demands of trail riding and overland towing, this ignition kit ensures your 4.0L maintains critical engine reliability far off the grid, keeping power delivery smooth and preventing unexpected stalls on challenging off-road terrain.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":48263135166712,"sku":"DS-EWKB10L9B","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-4runner-fj-cruiser-2010-2013-4-0l-v6-1.jpg?v=1776746245","url":"https:\/\/performancechiptuning.com\/products\/ignition-coil-iridium-spark-plugs-for-toyota-4runner-fj-cruiser-2010-2013-4-0l-v6","provider":"Performance Chip Tuning","version":"1.0","type":"link"}