{"product_id":"ignition-and-iridium-spark-plugs-for-mercedes-benz-c250-2012-2015-1-8l","title":"Ignition and Iridium Spark Plugs for Mercedes-Benz C250 (2012-2015) 1.8L","description":"\u003ch2\u003eHigh-Output Ignition Coils \u0026amp; Iridium Spark Plugs for 2012-2015 Mercedes Benz C-Class\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eThis direct-replacement ignition coil and iridium spark plug kit resolves misfires, restores lost fuel efficiency, and provides a 15% increase in spark energy for the 1.8L turbo engine.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock C-Class Ignition Degradation\u003c\/h3\u003e\n\u003cp\u003eThe stock ignition coils on the W204 chassis C250 are notoriously prone to premature degradation due to the intense thermal load generated by the M271 1.8L turbocharged engine. Over time, constant heat cycling degrades the internal epoxy potting and factory copper windings within the coil pack. This breakdown increases electrical resistance, leading to secondary voltage leaks. As the spark weakens, technicians typically observe rough idling, hesitation under heavy throttle, and eventual P0300-series misfire codes, which can quickly foul catalytic converters if left unaddressed.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis upgraded ignition package fundamentally redesigns the weak points of the OEM coils by integrating high-density copper wire internals and superior dielectric epoxy insulation to prevent voltage bleed. These materials ensure stable energy transfer even during extreme under-hood heat soak. Paired with the included iridium spark plugs, this kit delivers a 15% increase in spark energy. Iridium’s extremely high melting point allows for a precisely milled fine-wire center electrode, which concentrates the electrical field. This configuration requires less voltage from the coils to bridge the spark gap, reducing the strain on the ignition system while providing a hotter, more consistent burn for optimal combustion and restored throttle response.\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;\"\u003e2012-2015 Mercedes Benz C-Class\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;\"\u003eM271 \/ W204\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 \/ 229 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;\"\u003eUF658, C931, GN10552, 0001502580, 0040100072\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2012 Mercedes-Benz C250 1.8L\u003c\/li\u003e\n  \u003cli\u003e2013 Mercedes-Benz C250 1.8L\u003c\/li\u003e\n  \u003cli\u003e2014 Mercedes-Benz C250 1.8L\u003c\/li\u003e\n  \u003cli\u003e2015 Mercedes-Benz C250 1.8L\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Mercedes Benz Precision Standard\u003c\/h3\u003e\n\u003cp\u003eFor W204 owners, maintaining factory precision is non-negotiable. This OE+ upgrade guarantees proper resistance values to prevent ECU faults and check engine lights (CEL), delivering a glass-smooth idle and reliable power delivery consistent with strict European engineering standards.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50036041744632,"sku":"DS-EXX4J5KZ7","price":89.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-and-iridium-spark-plugs-for-mercedes-benz-c250-2012-2015-1-8l-1.jpg?v=1784742988","url":"https:\/\/performancechiptuning.com\/fr\/products\/ignition-and-iridium-spark-plugs-for-mercedes-benz-c250-2012-2015-1-8l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}