{"title":"Ignition Coils for Hyundai Elantra","description":"\u003ch2\u003eIgnition Coils Compatible with Hyundai Elantra\u003c\/h2\u003e\n\u003cp\u003eAn Elantra miss often starts as a light shudder in gear, then a code. These iridium coil and plug kits cover select sedan years from 2003-2020 plus one Elantra Coupe GT listing. The 2003-2006 2.0L kit is the only Elantra set here that includes plug wires. See \u003ca href=\"\/collections\/hyundai-ignition\"\u003eignition parts for Hyundai\u003c\/a\u003e or add a \u003ca href=\"\/collections\/hyundai-performance-tune\"\u003eperformance tune for Hyundai\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eSelect Elantra Years and Engines\u003c\/h3\u003e\n\u003cp\u003eSame displacement does not mean the same kit. The Coupe GT is its own listing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2.0L with wires:\u003c\/strong\u003e Elantra 2003-2006\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1.8L:\u003c\/strong\u003e Elantra 2011-2016\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1.8L and 2.0L I4:\u003c\/strong\u003e Elantra Coupe GT 2012-2020\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2.0L:\u003c\/strong\u003e Elantra 2015-2020\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1.4L:\u003c\/strong\u003e Elantra 2017-2020\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1.6L:\u003c\/strong\u003e Elantra 2017-2020\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch3\u003eWhich Elantra years and engines do these coils fit?\u003c\/h3\u003e\n\u003cp\u003eSelect applications from 2003-2020, not every Elantra year. Displacements are 1.4L, 1.6L, 1.8L, and 2.0L. The 2017-2020 1.4L and the 2017-2020 1.6L are separate kits. The 2011-2016 1.8L sedan kit is not the Coupe GT listing. The Coupe GT title names 1.8L and 2.0L I4 for 2012-2020.\u003c\/p\u003e\n\n\u003ch3\u003eDoes the Elantra Coupe GT use the sedan 2.0L kit?\u003c\/h3\u003e\n\u003cp\u003eNo. The Coupe GT listing is its own kit for 2012-2020, and it says 1.8L and 2.0L I4. The 2015-2020 sedan listing says 2.0L only and does not say I4. Match the name and the displacement on the title.\u003c\/p\u003e\n\n\u003ch3\u003eWhich Elantra kit includes plug wires?\u003c\/h3\u003e\n\u003cp\u003eOnly the 2003-2006 2.0L listing says coils, iridium plugs, and wires. The later 1.4L, 1.6L, 1.8L, 2.0L, and Coupe GT kits do not include wires.\u003c\/p\u003e","products":[{"product_id":"ignition-coil-iridium-spark-plugs-for-hyundai-elantra-coupe-gt-2012-2020-1-8l-2-0l-i4","title":"Ignition Coil \u0026 Iridium Spark Plugs for Hyundai Elantra Coupe GT (2012-2020) 1.8L 2.0L I4","description":"\u003ch2\u003eHigh-Output Ignition Coil \u0026amp; Iridium Spark Plugs for 2012-2020 Hyundai Elantra (Nu G4NB\/G4NA \/ MD\/AD)\u003c\/h2\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e This direct-replacement ignition coil and iridium spark plug kit restores optimal spark energy to resolve misfires, improve fuel combustion efficiency, and stabilize idle in higher-mileage Nu-series engines.\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Stock Elantra Ignition System Vulnerabilities\u003c\/h3\u003e\n  \u003cp\u003eThe OEM ignition coils on the 1.8L and 2.0L Nu engines are notoriously susceptible to thermal degradation. Positioned directly atop the cylinder head, they endure constant heat soak cycles, leading to the breakdown of internal winding resistance and deterioration of the epoxy potting. Over time, this manifests as weak spark output, intermittent cylinder misfires under heavy load, and a deteriorating idle quality. Furthermore, as the factory spark plugs wear past 60,000 miles, the electrode gap widens, forcing the aging ignition coils to work harder to bridge the gap. This elevated electrical workload accelerates coil failure, ultimately resulting in reduced fuel economy, sluggish throttle response, and an illuminated Check Engine Light (CEL) indicating active P0300-series misfire codes.\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n  \u003cp\u003eUpgrading to this combined ignition coil and iridium spark plug kit comprehensively addresses these thermal and electrical shortcomings. The replacement coils feature high-grade copper internal windings and advanced high-dielectric epoxy potting, effectively isolating the primary and secondary circuits from severe engine bay heat to prevent voltage leaks. This ensures consistent, high-voltage energy transfer across the entire RPM range. Paired with performance iridium spark plugs, the system benefits from an ultra-fine center electrode that requires significantly less voltage to fire while providing a more concentrated, robust spark kernel. Iridium's exceptional melting point resists gap erosion, guaranteeing a complete and efficient fuel burn. The result is restored horsepower, smoother acceleration, and long-term reliability without the risk of premature coil burnout.\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;\"\u003e2012-2020 Hyundai Elantra\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;\"\u003e1.8L Nu G4NB, 2.0L Nu G4NA \/ MD, JK, GD, AD, PD\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;\"\u003e147-173 hp \/ 131-154 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;\"\u003eUF651 \/ 273002E000 \/ IC780521660478109317504\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n \n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e2012-2020 Hyundai Elantra (1.8L \u0026amp; 2.0L I4)\u003c\/li\u003e\n    \u003cli\u003e2013-2014 Hyundai Elantra Coupe (1.8L \u0026amp; 2.0L I4)\u003c\/li\u003e\n    \u003cli\u003e2013-2020 Hyundai Elantra GT (1.8L \u0026amp; 2.0L I4)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eThe Hyundai Reliability Standard\u003c\/h3\u003e\n  \u003cp\u003eFor the KDM daily driver, maintaining optimal spark delivery is critical for long-term engine health. This comprehensive ignition overhaul ensures maximum power delivery, sustained fuel efficiency, and a misfire-free dashboard for thousands of miles to come.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":48266906239224,"sku":"DS-EJ1OLMXFN","price":134.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-iridium-spark-plugs-for-hyundai-elantra-coupe-gt-2012-2020-1-8l-2-0l-i4-1.jpg?v=1776830936"},{"product_id":"ignition-coil-and-iridium-spark-plugs-for-hyundai-elantra-2011-2016-1-8l","title":"Ignition Coil and Iridium Spark Plugs for Hyundai Elantra (2011-2016) 1.8L","description":"\u003ch2\u003eDirect-Replacement Ignition Coil and Iridium Spark Plug Kit for 2011-2016 Hyundai Elantra\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrimary Function:\u003c\/strong\u003e Restores factory secondary ignition output and combustion efficiency across all four cylinders to eliminate misfires and irregular idle.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Elantra Ignition Degradation\u003c\/h3\u003e\n\u003cp\u003eFactory coil-on-plug assemblies in the 1.8L Nu engine are subjected to extreme thermal cycling deep within the cylinder head spark plug wells. Over time, OEM epoxy insulation degrades and internal windings develop micro-fractures, while standard plugs experience gap erosion. This dielectric breakdown increases electrical resistance, causing weak spark discharge, erratic cold-start idling, hesitation under acceleration, and unburned fuel dumping into the exhaust stream.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive service kit features direct-fit coil packs built with premium-grade internal copper windings and reinforced thermoplastic housings to resist thermal fatigue and prevent high-voltage arcing. Paired with high-melting-point fine-wire iridium spark plugs, the system ensures lower voltage requirement for spark gap ionization, providing a robust flame kernel, stable idle, and maximized fuel atomization across the entire operating RPM range.\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;\"\u003e2011-2016 Hyundai Elantra\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;\"\u003e1.8L Nu MPi I4 \/ MD, UD\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;\"\u003e148 hp \/ 131 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;\"\u003eUF651, 27300-2E000, 273002E000, C1804, 5C1861, GN10633\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2011 Hyundai Elantra 1.8L L4 (GLS, Limited)\u003c\/li\u003e\n  \u003cli\u003e2012 Hyundai Elantra 1.8L L4 (GLS, Limited, Touring)\u003c\/li\u003e\n  \u003cli\u003e2013 Hyundai Elantra 1.8L L4 (GLS, Limited)\u003c\/li\u003e\n  \u003cli\u003e2014 Hyundai Elantra 1.8L L4 (SE, Limited)\u003c\/li\u003e\n  \u003cli\u003e2015 Hyundai Elantra 1.8L L4 (SE, Limited)\u003c\/li\u003e\n  \u003cli\u003e2016 Hyundai Elantra 1.8L L4 (SE, Limited, Value Edition)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Hyundai Commuter Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to withstand the demands of high-mileage daily commuting, this ignition setup clears common P0300-series misfire codes, restores peak stoichiometric efficiency, and guarantees dependable cold-weather start reliability.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50448294805752,"sku":"DS-EXT7NTYY5","price":69.95,"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-hyundai-elantra-2011-2016-1-8l-1.jpg?v=1788638996"},{"product_id":"ignition-coil-and-iridium-spark-plugs-for-hyundai-elantra-2017-2020-1-6l","title":"Ignition Coil and Iridium Spark Plugs for Hyundai Elantra (2017-2020) 1.6L","description":"\u003ch2\u003eDirect-Replacement Ignition Coil and Iridium Spark Plug Kit for 2017-2020 Hyundai Elantra\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Replaces degrading factory ignition coils and worn plugs to eliminate high-load misfires and restore direct-injection combustion efficiency across the entire RPM band.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Elantra Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eUnder sustained boost and high cylinder pressures, the direct-injected 1.6L turbocharged Gamma engine generates significant cylinder head thermal loads. Factory coil packs frequently suffer dielectric breakdown as internal epoxy degrades from thermal cycling. This leads to secondary voltage leakage, carbon tracking along spark plug boots, increased quenching, and erratic misfires under load that trigger check engine lights and power derating.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive ignition service kit utilizes four heavy-duty coil-on-plug assemblies built with high-conductivity internal copper windings and high-dielectric insulated resin housings to prevent voltage bleed. Matched with four fine-wire iridium spark plugs, this setup lowers required firing voltage while offering exceptional thermal resistance against erosion. Direct-fit blade terminals and factory-matched electrical connectors ensure plug-and-play installation without harness modification.\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;\"\u003e2017-2020 Hyundai Elantra\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;\"\u003e1.6L T-GDI (Gamma G4FJ) \/ AD Chassis\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;\"\u003e201 hp \/ 195 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;\"\u003eUF817, UF-817, 27301-2B120\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2017 Hyundai Elantra 1.6L L4 Turbo (Sport Trim)\u003c\/li\u003e\n  \u003cli\u003e2018 Hyundai Elantra 1.6L L4 Turbo (Sport Trim)\u003c\/li\u003e\n  \u003cli\u003e2019 Hyundai Elantra 1.6L L4 Turbo (Sport Trim)\u003c\/li\u003e\n  \u003cli\u003e2020 Hyundai Elantra 1.6L L4 Turbo (Sport Trim)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Hyundai Performance Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to meet the precise timing and dwell profiles required by Hyundai direct-injection engine control modules, delivering instantaneous throttle response, smooth idle stability, and consistent spark energy under high boost.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50452497662200,"sku":"DS-EU0Q1G5MF","price":98.95,"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-hyundai-elantra-2017-2020-1-6l-1.jpg?v=1788722147"},{"product_id":"ignition-coil-and-iridium-spark-plugs-for-hyundai-elantra-2015-2020-2-0l","title":"Ignition Coil and Iridium Spark Plugs for Hyundai Elantra (2015-2020) 2.0L","description":"\u003ch2\u003eDirect-Fit Ignition Coil and Iridium Spark Plug Kit for 2015-2020 Hyundai Elantra\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Restores factory combustion efficiency, stabilizes cylinder firing, and eliminates ignition misfires across the entire rev range on 2.0L engines.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Elantra Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eFactory ignition coils on the 2.0L Nu engine are prone to premature dielectric breakdown caused by sustained underhood thermal cycling. Over time, internal epoxy potting degrades, leading to high-voltage micro-arcing, weakened secondary winding output, and intermittent P0300-P0304 DTC fault codes. Paired with degraded OEM plug electrodes that suffer from thermal gap widening, this results in incomplete combustion, sluggish throttle response, reduced fuel economy, and severe rough idling under load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive ignition service kit replaces degraded components with four heavy-duty coil-on-plug assemblies and four matched fine-wire iridium spark plugs. The coils feature high-conductivity internal copper primary and secondary windings insulated in high-dielectric resin to resist thermal breakdown and current leakage. Direct-fit blade terminals ensure low contact resistance, while the laser-welded iridium electrode tips provide superior spark concentration, reduced arc voltage requirements, and high thermal resistance against flame erosion.\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;\"\u003e2015-2020 Hyundai Elantra 2.0L 4-Cylinder\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;\"\u003eNu 2.0L (G4NA \/ G4NH) \/ MD, UD, AD Chassis\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;\"\u003e147 hp \/ 132 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;\"\u003eUF816, UF-816\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2015-2016 Hyundai Elantra 2.0L L4 (MD \/ UD Chassis)\u003c\/li\u003e\n  \u003cli\u003e2017-2020 Hyundai Elantra 2.0L L4 (AD Chassis)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Hyundai Commuter Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to meet or exceed OEM electrical specifications, this direct-replacement kit provides consistent cold starts, dependable daily drivability, and zero-CEL reliability for daily commuter applications.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50454166995192,"sku":"DS-EY58ZS44R","price":99.95,"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-hyundai-elantra-2015-2020-2-0l-1.jpg?v=1788726593"},{"product_id":"ignition-coil-and-iridium-spark-plugs-for-hyundai-elantra-2017-2020-1-4l","title":"Ignition Coil and Iridium Spark Plugs for Hyundai Elantra (2017-2020) 1.4L","description":"\u003ch2\u003eDirect-Fit Ignition Coil and Iridium Spark Plug Kit for 2017-2020 Hyundai Elantra\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Replaces fatigued factory ignition coils and worn spark plugs to restore precise combustion timing, eliminate cylinder misfires, and stabilize idle across the 1.4L turbocharged powertrain.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Elantra Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eUnder continuous thermal cycling in the turbocharged 1.4L engine bay, OEM ignition coil packs suffer from dielectric breakdown and internal insulation failure. High cylinder pressures and sustained heat degrade the internal secondary windings, causing intermittent spark loss, rough idling, hesitation under boost, and premature spark plug fouling due to weak flame front propagation.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis direct-replacement ignition pack features primary and secondary windings wound with high-conductivity oxygen-free copper, sealed in high-dielectric epoxy potting to resist thermal degradation and electrical leakage. Paired with fine-wire iridium spark plugs engineered to withstand high boost conditions, the kit provides sustained spark energy, consistent high-voltage delivery through heavy-duty blade terminals, and reliable arc stability under heavy load.\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;\"\u003e2017-2020 Hyundai Elantra\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;\"\u003e1.4L Turbo GDI (Kappa II G4LD) \/ AD Chassis\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;\"\u003e128 hp \/ 156 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;\"\u003eUF857, UF-857, 2730103AA0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2017 Hyundai Elantra Eco 1.4L L4 Gas Turbo (G4LD)\u003c\/li\u003e\n  \u003cli\u003e2018 Hyundai Elantra Eco 1.4L L4 Gas Turbo (G4LD)\u003c\/li\u003e\n  \u003cli\u003e2019 Hyundai Elantra Eco 1.4L L4 Gas Turbo (G4LD)\u003c\/li\u003e\n  \u003cli\u003e2020 Hyundai Elantra Eco 1.4L L4 Gas Turbo (G4LD)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Hyundai Reliability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to exact OEM tolerances for direct plug-and-play installation, this complete ignition refresh maintains factory electrical resistance parameters, ensuring seamless ECU synchronization and zero check-engine lights across daily commuting and sustained highway driving.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50456039653624,"sku":"DS-EZ5HDAW8V","price":131.95,"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-hyundai-elantra-2017-2020-1-4l-1.jpg?v=1788757268"},{"product_id":"ignition-coil-and-iridium-spark-plugs-and-wires-for-hyundai-elantra-2003-2006-2-0l","title":"Ignition Coil and Iridium Spark Plugs and Wires for Hyundai Elantra (2003-2006) 2.0L","description":"\u003ch2\u003eHigh-Output Direct-Fit Ignition Kit for 2003-2006 Hyundai Elantra\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The ignition coil, iridium spark plugs, and wire kit replaces degraded factory ignition hardware on the 2003-2006 Elantra to eliminate spark blowout, stabilize erratic idle, and restore peak combustion efficiency.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Hyundai Elantra Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eUnder repeated thermal cycling, the factory ignition components on the 2.0L \u003cstrong\u003eBeta II\u003c\/strong\u003e engine degrade predictably. The OEM coil pack suffers from dielectric insulation breakdown as the internal potting epoxy cures and fractures, causing high-voltage secondary arc-through. Concurrently, factory resistive plug wires experience micro-fissuring in their silicone jackets and increased internal conductor resistance. Combined with electrode erosion on aging plugs, the system requires higher ionization voltages than the aging coil can deliver, resulting in cylinder misfires (DTC P0300–P0304), sluggish throttle pickup, and incomplete combustion under load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive service kit addresses the complete secondary ignition circuit in a single maintenance cycle. The dual-tower ignition coil assembly is built using high-permeability magnetic cores and vacuum-impregnated epoxy encapsulation to resist thermal degradation and prevent dielectric punch-through. Paired with low-resistance spark plug wires wrapped in high-temp silicone jackets, inductive current is delivered with minimal voltage drop. The four fine-wire \u003cstrong\u003eiridium spark plugs\u003c\/strong\u003e offer a reduced electrode footprint that lowers required breakdown voltage, creating an intense, stable spark kernel for rapid flame front propagation across the \u003cstrong\u003eXD\u003c\/strong\u003e combustion chamber.\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;\"\u003e2003-2006 Hyundai Elantra\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\u003eBeta II (G4GC)\u003c\/strong\u003e \/ \u003cstrong\u003eXD\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;\"\u003e138 hp \/ 136 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\u003e30520RBJS01\u003c\/strong\u003e, \u003cstrong\u003eUF419\u003c\/strong\u003e, \u003cstrong\u003eUF627\u003c\/strong\u003e, \u003cstrong\u003e30520RBJ003\u003c\/strong\u003e, \u003cstrong\u003e30520RBJ013\u003c\/strong\u003e, \u003cstrong\u003eKIN135982TOP\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\u003e2003 Hyundai Elantra 2.0L L4 (GLS, GT)\u003c\/li\u003e\n  \u003cli\u003e2004 Hyundai Elantra 2.0L L4 (GLS, GT)\u003c\/li\u003e\n  \u003cli\u003e2005 Hyundai Elantra 2.0L L4 (GLS, GT)\u003c\/li\u003e\n  \u003cli\u003e2006 Hyundai Elantra 2.0L L4 (GLS, GT, Limited)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the XD Elantra?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2003-2006 Hyundai Elantra equipped with the \u003cstrong\u003eBeta II\u003c\/strong\u003e 2.0L DOHC engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo the included iridium spark plugs require manual gapping?\u003c\/strong\u003e\u003cbr\u003e The iridium plugs arrive pre-gapped; avoid using wedge or coin-style gapping tools to prevent damaging the fine-wire iridium center electrode.\u003c\/p\u003e\n\n\u003ch3\u003eThe Hyundai Reliability Standard\u003c\/h3\u003e\n\u003cp\u003eRestore dependable, everyday commuter performance to your \u003cstrong\u003eXD\u003c\/strong\u003e chassis with direct-fit ignition hardware engineered to meet OEM electrical tolerances and withstand prolonged heat exposure.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50593935786232,"sku":"DS-E99I9D1CL","price":91.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-and-iridium-spark-plugs-and-wires-for-hyundai-elantra-2003-2006-2-0l-1.jpg?v=1790053946"}],"url":"https:\/\/performancechiptuning.com\/collections\/hyundai-elantra-ignition.oembed","provider":"Performance Chip Tuning","version":"1.0","type":"link"}