{"product_id":"ignition-coil-and-iridium-spark-plugs-for-nissan-altima-2007-2018-2-5l","title":"Ignition Coil and Iridium Spark Plugs for Nissan Altima (2007-2018) 2.5L","description":"\u003ch2\u003eDirect-Replacement Ignition Kit for 2007-2018 Nissan Altima\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect-fit replacement ignition tune-up kit:\u003c\/strong\u003e Restores factory spark energy, eliminates misfire trouble codes, and stabilizes idle dynamics on the QR25DE 2.5L 4-cylinder engine.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Altima Coil Breakdown and Spark Degradation\u003c\/h3\u003e\n\u003cp\u003eThe QR25DE engine subjects ignition coils to continuous thermal cycling within deep cylinder head plug wells. Over mileage, factory insulation breaks down internally, leading to secondary winding leakage, dielectric puncture, and high-load ignition misfires (DTC P0300–P0304). Worn standard plug gaps compound this load, causing hesitation, unburned hydrocarbon buildup, and rough cold starts.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis complete service kit pairs four heavy-duty coil-on-plug units with premium fine-wire iridium spark plugs. The coils utilize high-grade internal copper windings insulated with reinforced thermal epoxy to withstand heat soak and prevent arcing. High-melting-point iridium center electrodes resist gap erosion, delivering concentrated, high-voltage spark kernels for rapid flame propagation and crisp throttle response without ECU modification.\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;\"\u003e2007-2018 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 (2.5L I4) \/ L32, L33, D32\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;\"\u003e175-182 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;\"\u003eUF549 \/ UF-549\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2007-2012 Nissan Altima 2.5L L32 Sedan (Base, S, SL)\u003c\/li\u003e\n  \u003cli\u003e2008-2013 Nissan Altima 2.5L D32 Coupe (Base, S)\u003c\/li\u003e\n  \u003cli\u003e2013-2018 Nissan Altima 2.5L L33 Sedan (Base, S, SV, SL, SR)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Nissan Daily-Driver Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt for dependable commuter endurance, this kit ensures complete combustion, optimal air-fuel ratios, and clean emissions performance under everyday driving demands.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50452216971512,"sku":"DS-EPNC4K3QY","price":78.95,"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-2007-2018-2-5l-1.jpg?v=1788721027","url":"https:\/\/performancechiptuning.com\/products\/ignition-coil-and-iridium-spark-plugs-for-nissan-altima-2007-2018-2-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}