{"product_id":"ignition-coil-and-iridium-spark-plugs-for-infiniti-qx56-2011-2013-5-6l","title":"Ignition Coil and Iridium Spark Plugs for Infiniti QX56 (2011-2013) 5.6L","description":"\u003ch2\u003eDirect-Fit Ignition Coil and Iridium Spark Plug Kit for 2011-2013 Infiniti QX56\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The direct-fit ignition kit replaces fatigued factory coil packs and degraded spark plugs on the 2011-2013 Infiniti QX56 to eliminate secondary voltage leakage, resolve misfire codes, and restore factory combustion efficiency.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Infiniti QX56 Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eUnder the high thermal loads of the \u003cstrong\u003eZ62\u003c\/strong\u003e chassis engine bay, factory ignition coils experience accelerated dielectric breakdown. The direct-injected \u003cstrong\u003eVK56VD\u003c\/strong\u003e 5.6L V8 operates under high cylinder pressures and lean-burn scenarios, which place heavy demands on the secondary winding circuits. Over time, prolonged exposure to heat cycles causes the factory epoxy potting to micro-fracture and the rubber boots to harden. This degradation allows high-voltage arc tracking, carbon tracking down the plug insulator, and persistent misfires under load (DTC P0300 through P0308). Concurrently, worn factory plug gaps widen, increasing electrical resistance and accelerating primary driver strain.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis complete tune-up kit features eight high-output coil-on-plug units engineered with high-dielectric epoxy potting, thermal-resistant silicone boots, and high-conductivity copper wiring to prevent internal shorting and voltage flashover. Matched with eight fine-wire iridium spark plugs, this setup lowers required firing voltages, enhances flame kernel propagation, and maintains high spark stability under wide-open throttle. Designed to match OE dwell profiles, it restores crisp throttle response and clean combustion without ECU calibration changes.\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;\"\u003e2011-2013 Infiniti QX56\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\u003eVK56VD\u003c\/strong\u003e \/ \u003cstrong\u003eZ62\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;\"\u003e400 hp \/ 413 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\u003eUF650\u003c\/strong\u003e, \u003cstrong\u003eUF677\u003c\/strong\u003e, \u003cstrong\u003eIGC0083\u003c\/strong\u003e, \u003cstrong\u003eC1836\u003c\/strong\u003e, \u003cstrong\u003e5C1893\u003c\/strong\u003e, \u003cstrong\u003eGN10863\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\u003e2011 Infiniti QX56 Base 5.6L V8 (VK56VD) RWD \/ 4WD\u003c\/li\u003e\n  \u003cli\u003e2012 Infiniti QX56 Base 5.6L V8 (VK56VD) RWD \/ 4WD\u003c\/li\u003e\n  \u003cli\u003e2013 Infiniti QX56 Base 5.6L V8 (VK56VD) RWD \/ 4WD\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the Z62 QX56?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2011-2013 Infiniti QX56 equipped with the \u003cstrong\u003eVK56VD\u003c\/strong\u003e direct-injection 5.6L engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the iridium spark plugs pre-gapped for this application?\u003c\/strong\u003e\u003cbr\u003e The iridium plugs are pre-gapped to factory specifications for direct-injected 5.6L applications, but verifying gap clearance prior to installation is always standard practice.\u003c\/p\u003e\n\n\u003ch3\u003eThe Infiniti Towing \u0026amp; Endurance Standard\u003c\/h3\u003e\n\u003cp\u003eThe full-size \u003cstrong\u003eZ62\u003c\/strong\u003e platform relies on uncompromised low-end torque to manage its 8,500-pound tow rating. Restoring proper spark delivery ensures continuous combustion stability under sustained towing loads, steep grades, and high ambient temperatures.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50594116272376,"sku":"DS-EOG1U0JO5","price":136.95,"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-infiniti-qx56-2011-2013-5-6l-1.jpg?v=1790057166","url":"https:\/\/performancechiptuning.com\/fr\/products\/ignition-coil-and-iridium-spark-plugs-for-infiniti-qx56-2011-2013-5-6l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}