{"product_id":"ignition-coil-and-iridium-spark-plugs-for-porsche-cayenne-2003-2006-4-5l","title":"Ignition Coil and Iridium Spark Plugs for Porsche Cayenne (2003-2006) 4.5L","description":"\u003ch2\u003eDirect-Fit Ignition Coil \u0026amp; Iridium Spark Plug Service Kit for 2003-2006 Porsche Cayenne\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Restores high-voltage secondary ignition delivery and combustion efficiency across all eight cylinders to resolve misfires, rough idling, and hesitation under load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Cayenne 955 Thermal Breakdown\u003c\/h3\u003e\n\u003cp\u003eThe M48 4.5L V8 in the first-generation Cayenne generates significant cylinder head thermal soak, particularly in the deep plug wells. Over time, factory coil pack composite casings undergo thermal degradation, resulting in micro-cracks along the insulating body. This breakdown creates secondary voltage arcing directly to the cylinder head rather than across the plug gap, causing misfire codes (P0300-P0308), unburned fuel wash, and catalytic converter stress. Additionally, standard spark plug electrodes erode, widening gaps and demanding higher secondary voltage from already-compromised coils.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive 8-cylinder ignition kit addresses high-voltage dielectric breakdown through reinforced coil-on-plug housings and high-purity internal copper windings that maintain consistent saturation under continuous load. Direct-fit blade terminals ensure low-resistance connectivity. Paired with ultra-fine wire iridium spark plugs, the system reduces the required ionization voltage, providing superior anti-fouling characteristics, stable flame front propagation, and rapid ignition under high cylinder pressures.\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;\"\u003e2003-2006 Porsche Cayenne 4.5L V8\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;\"\u003eM48.00, M48.50 \/ Type 955 (9PA)\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;\"\u003e340-450 hp \/ 310-457 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;\"\u003eUF563, 94860210405, 94860210400, 94860210401, C1448\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2003-2006 Porsche Cayenne S 4.5L V8 (M48.00)\u003c\/li\u003e\n  \u003cli\u003e2003-2006 Porsche Cayenne Turbo 4.5L V8 (M48.50)\u003c\/li\u003e\n  \u003cli\u003e2006 Porsche Cayenne Turbo S 4.5L V8 (M48.50)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Porsche Engineering Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to exact German Motronic specifications, this complete coil and iridium plug kit ensures precise spark timing, eliminates false knock detection, and maintains factory DME calibration without throwing check engine lights.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50447754395896,"sku":"DS-EAOT1XW8Q","price":146.95,"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-porsche-cayenne-2003-2006-4-5l-1.jpg?v=1788623300","url":"https:\/\/performancechiptuning.com\/es\/products\/ignition-coil-and-iridium-spark-plugs-for-porsche-cayenne-2003-2006-4-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}