{"product_id":"ignition-coil-spark-plugs-for-mercedes-benz-m-class-2003-2005-3-7l","title":"Ignition Coil + Spark Plugs for Mercedes Benz M-Class (2003-2005) 3.7L","description":"\u003ch2\u003eOEM-Grade Direct-Fit Ignition Kit for 2003-2005 Mercedes Benz M-Class\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Ignition Coil and Spark Plug Kit replaces degraded factory secondary ignition components on the 2003-2005 Mercedes Benz M-Class to eliminate cylinder misfires, restore clean combustion, and stabilize idle quality.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Mercedes Benz M-Class Secondary Ignition Degradation\u003c\/h3\u003e\n\u003cp\u003eUnder-hood heat soak in the \u003cstrong\u003eW163\u003c\/strong\u003e engine bay causes chronic thermal fatigue to the factory ignition components of the 3.7L \u003cstrong\u003eM112\u003c\/strong\u003e V6. Over time, the internal epoxy resin and secondary copper windings within the factory coils break down, causing dielectric breakdown and voltage flashover. Compounding this issue, the twin-spark architecture demands reliable firing across twelve electrode gaps; worn plugs increase overall electrical resistance, overloading the coils and causing P0300 through P0306 misfire codes, hesitations under load, unburnt hydrocarbon wash, and catalytic converter damage.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive service kit restores ignition efficiency by matching six direct-fit coils with twelve calibrated spark plugs. Each ignition coil is built with high-dielectric epoxy potting, insulated copper windings, and high-temp PBT housings resistant to thermal arc tracking and micro-cracking. Paired with corrosion-resistant, pre-gapped spark plugs featuring dense alumina ceramic insulators, this setup ensures a rapid spark discharge across both flame fronts in each \u003cstrong\u003eM112\u003c\/strong\u003e cylinder chamber. The result is complete fuel atomization, prompt throttle response, and dependable cold-weather starting without electrical leakage.\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; margin-bottom: 20px;\"\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;\"\u003e2003-2005 Mercedes Benz M-Class (ML350)\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;\"\u003e\n\u003cstrong\u003eM112.970\u003c\/strong\u003e (3.7L V6) \/ \u003cstrong\u003eW163\u003c\/strong\u003e\n\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;\"\u003e232 hp \/ 254 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;\"\u003e\n\u003cstrong\u003eUF359\u003c\/strong\u003e, \u003cstrong\u003eGN10015\u003c\/strong\u003e, \u003cstrong\u003eGN10361\u003c\/strong\u003e, \u003cstrong\u003eC-671\u003c\/strong\u003e, \u003cstrong\u003e0001587803\u003c\/strong\u003e, \u003cstrong\u003eC1361\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2003 Mercedes-Benz M-Class ML350 3.7L V6 (W163, M112.970 Engine)\u003c\/li\u003e\n  \u003cli\u003e2004 Mercedes-Benz M-Class ML350 3.7L V6 (W163, M112.970 Engine)\u003c\/li\u003e\n  \u003cli\u003e2005 Mercedes-Benz M-Class ML350 3.7L V6 (W163, M112.970 Engine)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the W163 M-Class?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2003-2005 Mercedes Benz M-Class equipped with the \u003cstrong\u003eM112\u003c\/strong\u003e 3.7L V6 engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre spark plug wires included with this kit?\u003c\/strong\u003e\u003cbr\u003e No, this kit includes 6 coils and 12 spark plugs; reuse your existing secondary ignition leads or replace them separately if inspecting shows boot deterioration.\u003c\/p\u003e\n\n\u003ch3\u003eThe Mercedes Benz Precision Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to exact European OBD-II operational parameters, this ignition kit delivers factory-level resistance matching to maintain optimal primary current and prevent CEL fault codes while safeguarding your catalytic converters from rich-condition thermal degradation.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50623710200056,"sku":"DS-EFYEXV89D","price":208.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-spark-plugs-for-mercedes-benz-m-class-2003-2005-3-7l-1.jpg?v=1790298683","url":"https:\/\/performancechiptuning.com\/es\/products\/ignition-coil-spark-plugs-for-mercedes-benz-m-class-2003-2005-3-7l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}