{"product_id":"ignition-coil-and-iridium-spark-plugs-for-nissan-altima-2002-2006-2-5l","title":"Ignition Coil and Iridium Spark Plugs for Nissan Altima (2002-2006) 2.5L","description":"\u003ch2\u003eDirect-Replacement Ignition Kit for 2002-2006 Nissan Altima\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Restores factory secondary ignition output and combustion efficiency across all four cylinders to eliminate misfires, rough idle, and unburnt fuel waste.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Altima Thermal Breakdown Weakness\u003c\/h3\u003e\n\u003cp\u003eThe QR25DE cylinder head subjects factory coil-on-plug modules to extreme thermal cycles, causing internal epoxy degradation, micro-cracking in the secondary insulation, and dielectric breakdown. Over time, high resistance in worn copper windings causes spark degradation, while eroded stock spark plug electrodes widen gaps, overstressing the coils and triggering P0300-P0304 fault codes under load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis complete tune-up kit pairs four high-dielectric coil packs with four laser-welded iridium spark plugs. The ignition coils feature premium internal copper windings and reinforced thermoplastic housings resistant to thermal fatigue and oil contamination. Matched with fine-wire iridium center electrodes, the system lowers required ignition voltage, prevents carbon tracking, and ensures a stable, high-energy spark kernel 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;\"\u003e2002-2006 Nissan Altima\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;\"\u003eQR25DE \/ L31\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;\"\u003e175 hp \/ 180 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;\"\u003eUF350, UF-350\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2002 Nissan Altima 2.5L 4-Cylinder (Base, S, SL)\u003c\/li\u003e\n  \u003cli\u003e2003 Nissan Altima 2.5L 4-Cylinder (Base, S, SL)\u003c\/li\u003e\n  \u003cli\u003e2004 Nissan Altima 2.5L 4-Cylinder (Base, S, SL)\u003c\/li\u003e\n  \u003cli\u003e2005 Nissan Altima 2.5L 4-Cylinder (Base, S, SL)\u003c\/li\u003e\n  \u003cli\u003e2006 Nissan Altima 2.5L 4-Cylinder (Base, S, SL)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Nissan Precision Calibration Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to match OEM electrical impedance and dwell time parameters, this ignition setup ensures seamless ECU integration without check-engine lights or harness modifications, restoring throttle response and baseline torque.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50451972260088,"sku":"DS-ENNL9SQ5K","price":73.95,"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-nissan-altima-2002-2006-2-5l-1.jpg?v=1788715438","url":"https:\/\/performancechiptuning.com\/es\/products\/ignition-coil-and-iridium-spark-plugs-for-nissan-altima-2002-2006-2-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}