Ignition Coil and Iridium Spark Plugs for Nissan Altima (2007-2018) 2.5L

Direct-Replacement Ignition Kit for 2007-2018 Nissan Altima

Direct-fit replacement ignition tune-up kit: Restores factory spark energy, eliminates misfire trouble codes, and stabilizes idle dynamics on the QR25DE 2.5L 4-cylinder engine.

The Stock Altima Coil Breakdown and Spark Degradation

The 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.

The Engineering Solution

This 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.

Technical Specifications

Compatibility

• 2007-2012 Nissan Altima 2.5L L32 Sedan (Base, S, SL)
• 2008-2013 Nissan Altima 2.5L D32 Coupe (Base, S)
• 2013-2018 Nissan Altima 2.5L L33 Sedan (Base, S, SV, SL, SR)

The Nissan Daily-Driver Standard

Built for dependable commuter endurance, this kit ensures complete combustion, optimal air-fuel ratios, and clean emissions performance under everyday driving demands.