{"product_id":"ignition-coil-and-iridium-spark-plugs-for-audi-a4-2011-2012-1-8l","title":"Ignition Coil and Iridium Spark Plugs for Audi A4 (2011-2012) 1.8L","description":"\u003ch2\u003eDirect-Fit Ignition Coil \u0026amp; Iridium Spark Plug Kit for 2011-2012 Audi A4\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Restores secondary ignition circuit integrity by replacing degraded factory coil packs and eroded spark plugs to eliminate high-load misfires and erratic idle.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock A4 Thermal Fatigue and Spark Blowout\u003c\/h3\u003e\n\u003cp\u003eThe direct-injected turbocharged 1.8L engine generates elevated cylinder pressures and high under-hood thermal cycles that aggressively degrade factory ignition components. Over time, OEM coil pack epoxy potting develops micro-fissures from heat soak, causing internal dielectric breakdown and voltage leakage to ground. Simultaneously, factory spark plug electrodes erode, widening the gap and demanding higher secondary voltage from already-compromised coils. Under moderate to heavy boost, this leads to spark blowout, hesitations, unburned fuel entering the catalytic converter, and recurring cylinder misfire trouble codes (P0300-P0304).\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis complete ignition overhaul kit features four high-grade coil-on-plug units wound with premium electrolytic copper wire to maximize magnetic saturation and spark output across the entire RPM range. Reinforced thermal-resistant silicone boots isolate secondary voltage and prevent flashover along the ceramic insulator. Matched with fine-wire iridium spark plugs, the assembly lowers the required ignition voltage, stabilizes flame-front propagation, and withstands extreme combustion chamber temperatures without electrode erosion, ensuring consistent combustion stability.\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;\"\u003e2011-2012 Audi A4 1.8L\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;\"\u003eEA888 1.8L TFSI \/ B8 (Typ 8K)\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;\"\u003e160 hp \/ 184 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;\"\u003eUF575, UF-575, UF529, 07K905715D, 07K905715F, 07K905715C, L06F905115G, L07K905715F, 95860210200, 6739303, CLS1139, 5C1684, 921-2110, 5C1773\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2011 Audi A4 1.8L 4-Cylinder Turbocharged\u003c\/li\u003e\n  \u003cli\u003e2012 Audi A4 1.8L 4-Cylinder Turbocharged\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Audi Precision Standard\u003c\/h3\u003e\n\u003cp\u003eCalibrated specifically for European engine management requirements, these coils and plugs interface directly with the factory ECU without triggering diagnostic fault codes or requiring dwell map modifications. Proper primary resistance and terminal construction deliver zero-CEL reliability and smooth, OE-level throttle response.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50451950010616,"sku":"DS-EQHVMG6FK","price":79.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-and-iridium-spark-plugs-for-audi-a4-2011-2012-1-8l-1.jpg?v=1788714062","url":"https:\/\/performancechiptuning.com\/fr\/products\/ignition-coil-and-iridium-spark-plugs-for-audi-a4-2011-2012-1-8l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}