{"product_id":"ignition-coil-and-iridium-spark-plugs-for-bmw-3-series-2003-2005-2-2l","title":"Ignition Coil and Iridium Spark Plugs for BMW 3 Series (2003-2005) 2.2L","description":"\u003ch2\u003eDirect-Fit Ignition Coil and Iridium Spark Plug Service Kit for 2003-2005 BMW 3 Series\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrimary Function:\u003c\/strong\u003e Restores factory ignition energy, stabilizes combustion efficiency, and eliminates cylinder misfires across all six cylinders of the M54 inline-six platform.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock 3 Series Ignition Coil Degradation and Heat Breakdown\u003c\/h3\u003e\n\u003cp\u003eFactory ignition coils on the E46 chassis endure severe thermal cycles situated directly above the cylinder head beneath aesthetic engine shrouds. Over time, radiant engine heat breaks down internal epoxy resin and degrades internal copper winding insulation, inducing dielectric breakdown, secondary winding shorts, and high-rpm spark blowout. Simultaneously, standard nickel-core plugs suffer gap erosion and carbon accumulation, causing rough cold starts, unburned hydrocarbon emissions, intermittent hesitation, and catalyst-damaging misfire fault codes (P0300-P0306).\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis 6-cylinder refresh kit features heavy-duty coil-on-plug assemblies engineered with high-grade electromagnetic copper windings, high-dielectric silicone boots, and heat-resistant thermoplastic housings designed to withstand operating temperatures exceeding 140°C. Paired with ultra-fine-wire iridium spark plugs, the kit reduces the secondary ignition voltage required for arc gap jump, delivering superior flame kernel propagation, razor-sharp throttle response, stable idle harmonics, and complete fuel atomization under high engine loads.\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;\"\u003e2003-2005 BMW 3 Series 2.2L\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;\"\u003eM54B22 \/ E46\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;\"\u003e168 hp \/ 155 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;\"\u003eUF515, UF-515, UF522, UF-522\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2003 BMW 3 Series (E46) 320i 2.2L L6\u003c\/li\u003e\n  \u003cli\u003e2004 BMW 3 Series (E46) 320i 2.2L L6\u003c\/li\u003e\n  \u003cli\u003e2005 BMW 3 Series (E46) 320i 2.2L L6\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe BMW Precision Standard\u003c\/h3\u003e\n\u003cp\u003eDesigned to integrate seamlessly with the Siemens DME engine management system, these coils and iridium plugs deliver precise dwell control and OEM resistance calibration, ensuring crisp combustion cycles without false CEL triggers or electromagnetic interference.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50451973406968,"sku":"DS-EJ8TR8TE4","price":101.95,"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-bmw-3-series-2003-2005-2-2l-1.jpg?v=1788715528","url":"https:\/\/performancechiptuning.com\/fr\/products\/ignition-coil-and-iridium-spark-plugs-for-bmw-3-series-2003-2005-2-2l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}