{"product_id":"ignition-coil-spark-plugs-for-mercedes-benz-m-class-2008-2011-5-5l","title":"Ignition Coil + Spark Plugs for Mercedes Benz M-Class (2008-2011) 5.5L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Replacement Ignition Coil and Spark Plug Kit for 2008-2011 Mercedes Benz M-Class 5.5L (W164 \/ M273)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The complete ignition kit replaces worn coil packs and fouled spark plugs on the 2008-2011 Mercedes Benz M-Class 5.5L to eliminate cylinder misfires, restore clean flame-front propagation, and stabilize idle quality.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Mercedes Benz M-Class Secondary Ignition Degradation\u003c\/h3\u003e\n\u003cp\u003eIn the \u003cstrong\u003eW164\u003c\/strong\u003e ML550, the 32-valve \u003cstrong\u003eM273\u003c\/strong\u003e V8 generates significant under-hood thermal load. Over extended heat cycles, factory ignition coil boots suffer from dielectric breakdown and micro-cracking. Weakened internal windings and degraded silicone boots permit secondary spark energy to arc directly to the cylinder head rather than firing across the plug gap. Under wide-open-throttle load and high cylinder pressures, this voltage leak triggers random P0300 through P0308 diagnostic trouble codes, poor fuel economy, and potential catalytic converter contamination from unburnt fuel.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis service kit resolves secondary ignition failure by pairing 8 direct-fit ignition coils with 8 pre-gapped \u003cstrong\u003eNGK LKR7BGP\u003c\/strong\u003e platinum-tipped spark plugs. The coil assemblies are built with high-conductivity copper wire windings insulated by high-dielectric epoxy potting to withstand continuous engine-bay heat without voltage drop. Matched with fine-wire platinum center electrodes, this set lowers primary firing voltage demand, guarantees immediate arc transfer under load, and directly matches factory specifications for OEM part numbers \u003cstrong\u003e0001502780\u003c\/strong\u003e and \u003cstrong\u003e2729060060\u003c\/strong\u003e.\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;\"\u003e2008-2011 Mercedes Benz M-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;\"\u003eM273 5.5L V8 \/ W164\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;\"\u003e382 hp \/ 391 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;\"\u003eUF535, 0001501980, 0001502680, 0001502780, 2729060060\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\u003e2008-2011 Mercedes Benz M-Class ML550 5.5L V8 (M273 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 W164 M-Class?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2008-2011 Mercedes Benz M-Class equipped with the M273 5.5L V8 engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo these spark plugs require gapping before installation?\u003c\/strong\u003e\u003cbr\u003e The included NGK LKR7BGP platinum spark plugs arrive factory pre-gapped, though checking gap clearance with a feeler gauge prior to installation is recommended practice.\u003c\/p\u003e\n\n\u003ch3\u003eThe Mercedes Benz Precision Standard\u003c\/h3\u003e\n\u003cp\u003eEuropean V8 powertrains rely on strict primary resistance values to prevent false misfire detection by the Bosch ME9.7 engine management system. This ignition kit delivers factory-calibrated impedance curves to ensure smooth operation without check engine lights.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50625845428472,"sku":"DS-ESKCNHIKW","price":248.95,"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-2008-2011-5-5l-1.jpg?v=1790352262","url":"https:\/\/performancechiptuning.com\/fr\/products\/ignition-coil-spark-plugs-for-mercedes-benz-m-class-2008-2011-5-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}