{"product_id":"ignition-coil-iridium-spark-plugs-for-mercedes-benz-slk350-2005-2013-3-5l-v6","title":"Ignition Coil \u0026 Iridium Spark Plugs for Mercedes-Benz SLK350 (2005-2013) 3.5L V6","description":"\u003ch2\u003eHigh-Output Ignition Coil \u0026amp; Iridium Spark Plug Kit for 2005-2013 Mercedes Benz SLK-Class\u003c\/h2\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eThis comprehensive ignition overhaul kit directly replaces degrading factory coils and plugs to restore lost voltage, eliminate misfires, and improve combustion efficiency in the 3.5L V6.\u003c\/strong\u003e\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Stock SLK-Class Ignition Degradation\u003c\/h3\u003e\n  \u003cp\u003eThe factory ignition coils on the M272 and M276 engines are subjected to extreme thermal cycling due to their placement directly atop the cylinder heads. Over time, this heat soak breaks down the internal epoxy resin and primary\/secondary windings. This degradation increases electrical resistance, leading to weak spark energy, voltage leaks, and high-RPM misfires. When paired with worn standard spark plugs, the resulting incomplete combustion not only robs the engine of its factory horsepower but also places excessive strain on the catalytic converters and triggers persistent P0300-series check engine codes.\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n  \u003cp\u003eThis upgraded ignition kit utilizes premium internal copper wiring and high-dielectric epoxy to withstand extreme engine bay temperatures without voltage breakdown. By replacing the failure-prone OEM coils with these OE+ specification units, the system maintains consistent primary voltage and delivers maximum spark energy to the combustion chamber under high-load conditions. The included Iridium spark plugs feature an ultra-fine wire center electrode that requires less voltage to fire while offering superior resistance to thermal wear. This optimized spark event ensures complete fuel atomization, resolving rough idle issues, preventing spark blowout at higher RPMs, and offering up to a 15% increase in ignition performance and energy transfer.\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;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e2005-2013 Mercedes Benz SLK-Class\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eEngine \/ Chassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eM272 \u0026amp; M276 V6 \/ R171 \u0026amp; R172\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eStock Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e268-302 hp \/ 258-273 lb-ft (Approx)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eUF535, UF-535, 5C1748, C1691, 0001501980\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n \n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e2005 Mercedes-Benz SLK350 3.5L V6\u003c\/li\u003e\n    \u003cli\u003e2006 Mercedes-Benz SLK350 3.5L V6\u003c\/li\u003e\n    \u003cli\u003e2007 Mercedes-Benz SLK350 3.5L V6\u003c\/li\u003e\n    \u003cli\u003e2008 Mercedes-Benz SLK350 3.5L V6\u003c\/li\u003e\n    \u003cli\u003e2009 Mercedes-Benz SLK350 3.5L V6\u003c\/li\u003e\n    \u003cli\u003e2010 Mercedes-Benz SLK350 3.5L V6\u003c\/li\u003e\n    \u003cli\u003e2011 Mercedes-Benz SLK350 3.5L V6\u003c\/li\u003e\n    \u003cli\u003e2012 Mercedes-Benz SLK350 3.5L V6\u003c\/li\u003e\n    \u003cli\u003e2013 Mercedes-Benz SLK350 3.5L V6\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eThe Mercedes Benz Precision Standard\u003c\/h3\u003e\n  \u003cp\u003eEngineered to exact factory parameters, this ignition package ensures a precise fit within the tight confines of the SLK-Class cylinder banks, restoring smooth power delivery and guaranteeing a CEL-free operation.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50037218377976,"sku":"DS-E65I7YJZU","price":109.95,"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-slk350-2005-2013-3-5l-v6-1.jpg?v=1784755809","url":"https:\/\/performancechiptuning.com\/products\/ignition-coil-iridium-spark-plugs-for-mercedes-benz-slk350-2005-2013-3-5l-v6","provider":"Performance Chip Tuning","version":"1.0","type":"link"}