{"product_id":"ignition-coil-and-iridium-spark-plugs-for-mercedes-benz-c-class-2003-2005-1-8l","title":"Ignition Coil and Iridium Spark Plugs for Mercedes Benz C-Class (2003-2005) 1.8L","description":"\u003ch2\u003eDirect-Fit Ignition Tune-Up Kit for 2003-2005 Mercedes Benz C-Class\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrimary Function:\u003c\/strong\u003e Restores factory secondary ignition performance and peak combustion efficiency for the 1.8L supercharged M271 powertrain by replacing degraded coils and worn electrodes with matched high-dielectric coil-on-plug packs and fine-wire iridium plugs.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock W203 Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eThe forced-induction M271 engine operates under elevated cylinder pressures and thermal loads within the tight engine bay of the W203 chassis. Over time, OEM ignition coils suffer from dielectric breakdown in the epoxy potting, internal copper winding fatigue, and boot micro-cracking. This breakdown causes high-rpm spark blowout, secondary voltage leakage, rough idle, and persistent misfire codes (P0300–P0304). Simultaneously, worn standard spark plug gaps increase the required firing voltage, accelerating coil driver degradation inside the ECU.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis complete 4-cylinder refresh kit features four heavy-duty coil packs engineered with high-conductivity copper primary and secondary windings, reinforced PBT thermoplastic housings, and heat-resistant silicone boots to isolate high voltage. Paired with four fine-wire iridium spark plugs, the system requires significantly lower ionization voltage while providing a stable, localized spark kernel capable of withstanding boost pressure. The result is instant throttle response, optimized fuel burn, and total elimination of high-load ignition misfires.\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;\"\u003e2003-2005 Mercedes Benz C-Class (1.8L 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;\"\u003eM271 Supercharged I4 \/ W203\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;\"\u003e189 hp \/ 192 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;\"\u003eUF555, UF-555\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003e2003-2005 Mercedes-Benz C230 Kompressor Sedan 1.8L L4\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003e2003-2005 Mercedes-Benz C230 Kompressor Coupe 1.8L L4\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Mercedes-Benz Calibration Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to meet precise European engine management tolerances, these direct-fit blade terminal assemblies deliver OEM-specified dwell time response without triggering nuisance check engine lights or interference with sensitive CAN bus electronics.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50458903544056,"sku":"DS-E6SVXP4OL","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-mercedes-benz-c-class-2003-2005-1-8l-1.jpg?v=1788802752","url":"https:\/\/performancechiptuning.com\/es\/products\/ignition-coil-and-iridium-spark-plugs-for-mercedes-benz-c-class-2003-2005-1-8l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}