{"product_id":"ignition-coil-and-iridium-spark-plugs-for-kia-optima-2011-2016-2-0l","title":"Ignition Coil and Iridium Spark Plugs for Kia Optima (2011-2016) 2.0L","description":"\u003ch2\u003eDirect-Fit Ignition Coil and Iridium Spark Plug Kit for 2011-2016 Kia Optima\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The ignition coil and iridium spark plug kit replaces degraded factory ignition components on the 2011-2016 Kia Optima to eliminate high-load misfires, restore lost combustion efficiency, and stabilize idle quality.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Kia Optima Secondary Voltage Breakdown\u003c\/h3\u003e\n\u003cp\u003eFactory coil packs and plugs on the direct-injected \u003cstrong\u003eTheta II\u003c\/strong\u003e engine face extreme cylinder pressures and thermal saturation. Over time, heat cycles break down the primary and secondary epoxy windings inside the OEM coil boots, leading to dielectric breakdown and micro-arcing. Paired with eroded factory ground electrodes, this increased resistance causes blowout under boost, sluggish throttle tip-in, and persistent P0300-P0304 cylinder misfire fault codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive service kit features four reinforced direct-fit pencil coils and matched iridium-tipped spark plugs engineered to withstand aggressive turbo duty cycles. The coil housings use high-grade thermoplastic potting and premium copper internal windings to resist thermal shock and deliver a stable 35,000+ volt discharge. The fine-wire iridium plugs feature sintered alumina ceramic insulators and laser-welded center electrodes that resist carbon fouling and spark erosion across elevated cylinder temperatures.\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;\"\u003e2011-2016 Kia Optima 2.0L\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\u003eTheta II G4KH\u003c\/strong\u003e \/ \u003cstrong\u003eTF\u003c\/strong\u003e, \u003cstrong\u003eJF\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;\"\u003e274 hp \/ 269 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\u003eUF647\u003c\/strong\u003e, \u003cstrong\u003eHL3Z12029A\u003c\/strong\u003e, \u003cstrong\u003eKIN119978TOP\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\u003e2011-2015 Kia Optima SX 2.0L Turbo 4-Cylinder\u003c\/li\u003e\n  \u003cli\u003e2013-2016 Kia Optima SXL \/ Limited 2.0L Turbo 4-Cylinder\u003c\/li\u003e\n  \u003cli\u003e2016 Kia Optima SX 2.0L Turbo 4-Cylinder\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the TF chassis Optima?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2011-2016 Kia Optima equipped with the \u003cstrong\u003eTheta II\u003c\/strong\u003e 2.0L turbocharged engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre these spark plugs pre-gapped for direct injection applications?\u003c\/strong\u003e\u003cbr\u003e Yes, the iridium plugs arrive pre-gapped to factory factory specifications for fast coil-on-plug installation without adjustment.\u003c\/p\u003e\n\n\u003ch3\u003eThe Kia Performance Standard\u003c\/h3\u003e\n\u003cp\u003eDirect-injected Korean platforms demand precise ignition timing and uncompromised secondary voltage to maintain full power delivery under boost. This direct-replacement ignition pack guarantees clean combustion chamber flame front propagation with zero diagnostic trouble codes.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50594079015160,"sku":"DS-EUU7TNCIQ","price":68.95,"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-kia-optima-2011-2016-2-0l-1.jpg?v=1790056781","url":"https:\/\/performancechiptuning.com\/fr\/products\/ignition-coil-and-iridium-spark-plugs-for-kia-optima-2011-2016-2-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}