{"product_id":"ignition-coil-and-iridium-spark-plugs-for-mercedes-benz-m-class-2012-2015-3-5l","title":"Ignition Coil and Iridium Spark Plugs for Mercedes Benz M-Class (2012-2015) 3.5L","description":"\u003ch2\u003eDirect-Fit Ignition Coil and Iridium Spark Plug Service Kit for 2012-2015 Mercedes Benz M-Class\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Replaces fatigued factory ignition coils and fouled plugs to restore precise combustion timing, eliminate misfires, and stabilize idle across all six cylinders.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock M-Class Secondary Ignition Degradation\u003c\/h3\u003e\n\u003cp\u003eThe naturally aspirated 3.5L M276 direct-injection engine operates under high thermal loads and lean-burn conditions. Over extended duty cycles, OEM coil packs suffer from dielectric breakdown in the internal epoxy insulation, causing high-voltage leakage, erratic spark energy, and cold-start cylinder misfires. Concurrently, factory spark plugs experience electrode erosion, increasing gap resistance and placing excessive strain on primary ignition circuits.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive refresh kit pairs six heavy-duty ignition coil packs with six fine-wire iridium spark plugs. The coil-on-plug assemblies feature high-conductivity copper primary and secondary windings encased in thermal-resistant resin to prevent insulation tracking and arc-over. Matched iridium-tipped spark plugs offer superior thermal dissipation and high-arc stability under elevated cylinder pressures, ensuring complete fuel atomization, prompt throttle response, and smooth transient acceleration.\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 M-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;\"\u003e3.5L M276 V6 \/ W166\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;\"\u003e302 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;\"\u003eUF733, UF-733, UF741, UF-741, 2769063500, 2769063700\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 ML350 3.5L V6 (W166, Base \u0026amp; 4Matic)\u003c\/li\u003e\n  \u003cli\u003e2013 Mercedes-Benz ML350 3.5L V6 (W166, Base \u0026amp; 4Matic)\u003c\/li\u003e\n  \u003cli\u003e2014 Mercedes-Benz ML350 3.5L V6 (W166, Base \u0026amp; 4Matic)\u003c\/li\u003e\n  \u003cli\u003e2015 Mercedes-Benz ML350 3.5L V6 (W166, Base \u0026amp; 4Matic)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Mercedes Benz Precision Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to match strict European ECU resistance parameters, this ignition kit maintains closed-loop factory mapping without triggering nuisance check engine lights or adaptation faults, ensuring uncompromising German engineering reliability.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50458905968888,"sku":"DS-EKH9IKST7","price":197.95,"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-m-class-2012-2015-3-5l-1.jpg?v=1788802887","url":"https:\/\/performancechiptuning.com\/products\/ignition-coil-and-iridium-spark-plugs-for-mercedes-benz-m-class-2012-2015-3-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}