{"product_id":"ignition-coil-spark-plugs-for-mercedes-benz-cl-class-1998-1999-6-0l","title":"Ignition Coil + Spark Plugs for Mercedes Benz CL-Class (1998-1999) 6.0L","description":"\u003ch2\u003eDirect-Fit Ignition Coil and Spark Plug Tune-Up Kit for 1998-1999 Mercedes Benz CL-Class\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The ignition coil and spark plug kit replaces aged, heat-degraded ignition components on the 1998-1999 Mercedes Benz CL-Class to eliminate high-load misfires, stabilize idle quality, and restore factory combustion efficiency across all 12 cylinders.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Mercedes Benz CL-Class Thermal Breakdown Vulnerability\u003c\/h3\u003e\n\u003cp\u003eThe 6.0L V12 engine bay of the \u003cstrong\u003eC140\u003c\/strong\u003e chassis operates under severe thermal loading due to tight packaging and high underhood temperatures. Over time, continuous heat cycling degrades the internal copper windings and primary epoxy insulation of the factory ignition coils. This breakdown causes dielectric breakdown, micro-arcing, and intermittent misfires under throttle tip-in or sustained load. Compounding this, extended plug gap erosion from aged copper or platinum electrodes increases secondary circuit resistance, putting excess electrical strain on the coil drivers and causing catalytic converter overheating or cylinder deactivation codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive 12-coil and 12-spark plug service kit delivers a complete refresh designed to match factory resistance and dwell parameters for the Bosch ME engine management system. Each ignition coil features high-dielectric epoxy potting, thermal-resistant PBT housings, and premium magnetic-grade silicon steel laminations to prevent internal arcing and heat soak saturation. The matched spark plugs feature high-grade nickel and copper core metallurgy engineered to maintain precise electrode gaps, resist fouling, and ensure clean flame kernel propagation under high compression.\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;\"\u003e1998-1999 Mercedes Benz CL-Class 6.0L\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\u003eM120\u003c\/strong\u003e 6.0L V12 \/ \u003cstrong\u003eC140\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;\"\u003e389 hp \/ 420 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\u003eUF352\u003c\/strong\u003e, \u003cstrong\u003eC1214\u003c\/strong\u003e, \u003cstrong\u003eC1216\u003c\/strong\u003e, \u003cstrong\u003eC-764\u003c\/strong\u003e, \u003cstrong\u003eIC482\u003c\/strong\u003e, \u003cstrong\u003eGN10014\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\u003e1998 Mercedes-Benz CL-Class CL600 Coupe 6.0L V12 (C140 \/ M120.982)\u003c\/li\u003e\n  \u003cli\u003e1999 Mercedes-Benz CL-Class CL600 Coupe 6.0L V12 (C140 \/ M120.982)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the C140 CL-Class?\u003c\/strong\u003e\u003cbr\u003e Yes, this kit is specifically designed for the 1998-1999 Mercedes Benz CL-Class (C140) equipped with the 6.0L M120 V12 engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShould all 12 coils and plugs be replaced at the same time?\u003c\/strong\u003e\u003cbr\u003e Yes, replacing all 12 simultaneously ensures uniform secondary resistance across both cylinder banks, preventing uneven idle and misfire fault codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Mercedes Benz Precision Standard\u003c\/h3\u003e\n\u003cp\u003ePreserve the balanced smoothness of your classic V12 grand tourer with components engineered to exact German tolerances, ensuring clean cold starts, error-free ECU communication, and zero CEL illumination.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50623692669176,"sku":"DS-EJRL0QK39","price":323.95,"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-cl-class-1998-1999-6-0l-1.jpg?v=1790297870","url":"https:\/\/performancechiptuning.com\/fr\/products\/ignition-coil-spark-plugs-for-mercedes-benz-cl-class-1998-1999-6-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}