{"product_id":"ignition-coil-iridium-spark-plugs-for-mercedes-benz-e-class-2012-2016-4-7l-5-5l","title":"Ignition Coil + Iridium Spark Plugs for Mercedes Benz E-Class (2012-2016) 4.7L 5.5L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Ignition Coil \u0026amp; Iridium Spark Plug Kit for 2012-2016 Mercedes Benz E-Class 4.7L, 5.5L (W212 \/ M278 \u0026amp; M157)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The complete ignition kit restores factory spark energy and cylinder combustion efficiency across the 2012-2016 Mercedes Benz E-Class to eliminate high-boost misfires and stabilize idle quality.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Mercedes Benz E-Class Ignition Breakdown Under Boost\u003c\/h3\u003e\n\u003cp\u003eThe bi-turbocharged \u003cstrong\u003eM278\u003c\/strong\u003e and \u003cstrong\u003eM157\u003c\/strong\u003e engines in the \u003cstrong\u003eW212\u003c\/strong\u003e chassis generate extreme cylinder pressures and thermal loads within cramped engine bays. Factory ignition coils suffer dielectric breakdown over time as prolonged heat cycles degrade internal epoxy insulation and primary\/secondary windings. Simultaneously, factory spark plug electrode gaps expand due to high-boost electrical erosion, substantially raising the required firing voltage. This combination causes intermittent secondary ignition breakdown, intermittent spark blowout under load, sluggish transient response, and soft misfire trouble codes without necessarily tripping an immediate check engine light.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive service kit pairs eight high-dielectric coil-on-plug units with genuine double-iridium \u003cstrong\u003eBosch ZR6SII3320\u003c\/strong\u003e spark plugs engineered specifically for Mercedes-Benz direct-injection forced-induction architectures. The ignition coils utilize premium heat-resistant silicone boots, internal thermal-conductive epoxy resins, and copper-core windings that deliver consistent output up to factory peak voltage without thermal breakdown. Paired with fine-wire double-iridium center and ground electrodes, this ignition system minimizes quenching, lowers ignition voltage demand, resists fouling, and maintains consistent gap clearance under heavy boost to ensure clean, complete combustion cycles.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\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;\"\u003e2012-2016 Mercedes Benz E-Class\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;\"\u003eM278 (4.7L), M157 (5.5L) \/ W212, S212\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;\"\u003e402-577 hp \/ 443-590 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;\"\u003eUF741, A2769063700, 2769063700, 2769060501, 0040103070, ZR6SII3320\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2012-2016 Mercedes Benz E-Class E550 4.7L V8 Biturbo (M278)\u003c\/li\u003e\n  \u003cli\u003e2012-2015 Mercedes Benz E-Class E63 AMG 5.5L V8 Biturbo (M157)\u003c\/li\u003e\n  \u003cli\u003e2014-2016 Mercedes Benz E-Class E63 AMG S 5.5L V8 Biturbo (M157)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the W212 E-Class?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2012-2016 Mercedes Benz E-Class equipped with the M278 4.7L and M157 5.5L bi-turbo V8 engines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the recommended installation torque for these spark plugs?\u003c\/strong\u003e\u003cbr\u003e Torque the double-iridium spark plugs dry to the factory-specified 23 Nm (17 lb-ft) into the aluminum cylinder head to avoid thread distortion or heat dissipation failure.\u003c\/p\u003e\n\n\u003ch3\u003eThe Mercedes Benz Precision Standard\u003c\/h3\u003e\n\u003cp\u003eEuro direct-injected bi-turbo engines demand strict electrical tolerances; installing fresh coils alongside matched double-iridium plugs guarantees balanced cylinder-to-cylinder resistance, prevents diagnostic CEL codes, and preserves refined high-speed cruising manners.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50625856012536,"sku":"DS-E9KON7J2N","price":499.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-iridium-spark-plugs-for-mercedes-benz-e-class-2012-2016-4-7l-5-5l-1.jpg?v=1790352397","url":"https:\/\/performancechiptuning.com\/es\/products\/ignition-coil-iridium-spark-plugs-for-mercedes-benz-e-class-2012-2016-4-7l-5-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}