Ignition Coil & Iridium Spark Plugs for Infiniti JX35 (2013) 3.5L

Direct-Fit Ignition Coil & Iridium Spark Plugs for Infiniti JX35 (VQ35DE / L50)

Restores optimal combustion and eliminates misfires by replacing degraded factory ignition coils and worn spark plugs with high-voltage, iridium-tipped replacements.

The Stock JX35 Ignition System Degradation

Over time, the L50 chassis equipped with the VQ35DE engine is prone to progressive ignition system degradation. The factory coil packs endure relentless thermal cycling from the transverse-mounted 3.5L V6, leading to internal epoxy breakdown and micro-cracking in the coil boots. This severe heat soak induces voltage leaks and intermittent misfires, particularly under load. Simultaneously, standard spark plug electrodes erode, increasing the spark gap beyond factory tolerances. This combination forces the ignition coils to work harder to jump the expanded gap, accelerating primary winding failure, triggering P0300-series OBD2 codes, and noticeably degrading fuel economy and throttle response.

The Engineering Solution

This comprehensive ignition overhaul mitigates VQ35DE misfire conditions through upgraded materials and tighter manufacturing tolerances. The replacement ignition coils feature high-grade dielectric epoxy and reinforced polybutylene terephthalate (PBT) housings to resist extreme engine bay temperatures and prevent secondary voltage arc-over. Heavy-duty copper wire windings increase the primary and secondary turn ratios, delivering a more potent and consistent spark energy to the combustion chamber. The matched iridium spark plugs utilize an ultra-fine center electrode that requires less voltage to fire while offering exceptional resistance to spark erosion. This ensures a precise, stable spark gap over a significantly longer service life, restoring the factory power curve, smoothing out rough idles, and maximizing fuel atomization efficiency.

Technical Specifications

Compatibility

• 2013 Infiniti JX35 Base 3.5L V6

The Infiniti Precision Standard

For Japanese luxury crossovers, maintaining precise ignition timing is critical for smooth, reliable power delivery. This matched coil and plug kit ensures your VQ35DE operates at peak efficiency without triggering the check engine light, restoring factory reliability and responsive acceleration.