{"product_id":"ignition-coil-and-iridium-spark-plugs-for-mercedes-benz-c-class-2015-2018-2-0l","title":"Ignition Coil and Iridium Spark Plugs for Mercedes Benz C-Class (2015-2018) 2.0L","description":"\u003ch2\u003eDirect-Fit Ignition Service Kit for 2015-2018 Mercedes Benz C-Class\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Restores factory spark energy and precise combustion timing across all four cylinders to eliminate misfires, rough idling, and hesitation under boost.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock C-Class Ignition Vulnerability\u003c\/h3\u003e\n\u003cp\u003eThe turbocharged M274 engine operates under elevated cylinder pressures and thermal loads. Over time, OEM ignition coils suffer dielectric breakdown within the primary and secondary internal copper windings due to sustained engine bay heat soak. Simultaneously, factory spark plug electrodes degrade, widening the plug gap and forcing the coil packs to demand higher secondary voltage. This thermal and electrical fatigue leads to erratic spark delivery, unburnt fuel entering the exhaust tract, hesitation during wide-open throttle transitions, and common diagnostic trouble codes such as P0300 through P0304.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive service kit pairs four heavy-duty coil-on-plug units with four fine-wire iridium spark plugs engineered to factory thermal specs. The ignition coils feature premium insulated copper windings and high-grade silicone boots to prevent electrical arcing and dielectric failure under high load. The iridium plugs offer superior thermal conductivity and corrosion resistance compared to standard nickel, maintaining a precise spark gap under high boost levels to deliver consistent flame kernel propagation and smooth power delivery.\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;\"\u003e2015-2018 Mercedes Benz C-Class 2.0L L4\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;\"\u003eM274 \/ W205\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;\"\u003e241 hp \/ 273 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;\"\u003eUF734, UF820, A2749060700, A2749061400, 2749060700, 2749061400, 28400714\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2015 Mercedes-Benz C300 2.0L L4 (W205)\u003c\/li\u003e\n  \u003cli\u003e2016 Mercedes-Benz C300 2.0L L4 (W205)\u003c\/li\u003e\n  \u003cli\u003e2017 Mercedes-Benz C300 2.0L L4 (W205)\u003c\/li\u003e\n  \u003cli\u003e2018 Mercedes-Benz C300 2.0L L4 (W205)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Mercedes-Benz Precision Standard\u003c\/h3\u003e\n\u003cp\u003eEuropean direct-injection engines require exact resistance and dwell-time calibration to prevent false misfire flags. These coils and iridium plugs match factory ECU parameters for plug-and-play installation without triggering check engine lights.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50449147330808,"sku":"DS-EIBV5I7M2","price":202.95,"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-mercedes-benz-c-class-2015-2018-2-0l-1.jpg?v=1788667879","url":"https:\/\/performancechiptuning.com\/products\/ignition-coil-and-iridium-spark-plugs-for-mercedes-benz-c-class-2015-2018-2-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}