{"product_id":"ignition-coil-spark-plugs-for-mercedes-benz-m-class-1999-2003-4-3l-5-5l","title":"Ignition Coil + Spark Plugs for Mercedes Benz M-Class (1999-2003) 4.3L 5.5L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eOEM-Grade Ignition Coil and Spark Plug Tune-Up Kit for 1999-2003 Mercedes Benz M-Class (W163)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The ignition coil and Denso PK16TT spark plug kit restores factory spark energy and cylinder combustion efficiency across twin-spark 1999-2003 Mercedes Benz M-Class engines to eliminate misfires and rough idling.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Mercedes Benz M-Class Ignition Degradation\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eW163\u003c\/strong\u003e platform's twin-spark \u003cstrong\u003eM113\u003c\/strong\u003e V8 relies on dual-tower coil packs to fire two spark plugs sequentially per cylinder. Over time, extreme engine bay thermal cycling degrades the coil internal copper windings and dielectric epoxy insulation, causing internal dielectric breakdown and secondary voltage leakage under load. Simultaneously, worn ground electrodes on aging spark plugs widen gaps, forcing the coils to operate at elevated breakdown voltages. This degradation triggers intermittent misfires under acceleration, rough idle harmonics, unburnt hydrocarbon build-up, and persistent P0300 through P0308 diagnostic trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive service kit pairs eight high-dielectric dual-output ignition coils with sixteen \u003cstrong\u003eDenso PK16TT (4503)\u003c\/strong\u003e platinum-titanium twin-tip spark plugs to fully overhaul the ignition secondary circuit. Built with high-purity magnetic steel laminations and heat-resistant silicone boots, the coils resist voltage breakdown and corona discharge in confined valve cover recesses. The twin-tip design utilizes a 1.1mm platinum center electrode coupled with a titanium-enhanced ground electrode, reducing quenching effects and maintaining low firing voltage requirements across the entire RPM band. The resulting uniform kernel propagation maximizes flame speed and restores optimal combustion pressure in all sixteen flame fronts.\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;\"\u003e1999-2003 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;\"\u003e\n\u003cstrong\u003eM113\u003c\/strong\u003e (4.3L \/ 5.5L V8) \/ \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;\"\u003e268-342 hp \/ 288-376 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\u003e0001587803\u003c\/strong\u003e, \u003cstrong\u003e0001587303\u003c\/strong\u003e, \u003cstrong\u003eA0001587803\u003c\/strong\u003e, \u003cstrong\u003eUF-359\u003c\/strong\u003e\n\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\u003e1999-2001 Mercedes Benz M-Class ML430 4.3L V8 (W163 - M113.942)\u003c\/li\u003e\n  \u003cli\u003e2000-2003 Mercedes Benz M-Class ML55 AMG 5.5L V8 (W163 - M113.981)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the W163 M-Class?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 1999-2003 Mercedes Benz M-Class equipped with the \u003cstrong\u003eM113\u003c\/strong\u003e engine.\u003c\/p\u003e\n\n\u003ch4\u003eWhy are there 16 spark plugs for an 8-cylinder engine?\u003c\/h4\u003e\n\u003cp\u003eThe Mercedes-Benz \u003cstrong\u003eM113\u003c\/strong\u003e V8 employs a dual-ignition, twin-spark combustion chamber architecture requiring two spark plugs per cylinder fired by eight dual-output coil packs.\u003c\/p\u003e\n\n\u003ch3\u003eThe Mercedes Benz Precision Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to meet rigorous European diagnostic parameters, this dual-spark ignition kit provides smooth engine operation, precise ME 2.8 ECU timing compliance, and clean misfire-free combustion with zero risk of triggering a check engine light.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67524631560440,"sku":"DS-EFTGFAIUE","price":356.95,"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-1999-2003-4-3l-5-5l-1.jpg?v=1790460758","url":"https:\/\/performancechiptuning.com\/fr\/products\/ignition-coil-spark-plugs-for-mercedes-benz-m-class-1999-2003-4-3l-5-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}