Ignition Coil and Iridium Spark Plugs for Dodge Nitro (2007-2011) 4.0L

Direct-Replacement Ignition Coil and Iridium Spark Plug Kit for 2007-2011 Dodge Nitro

Primary Function: Restores factory ignition energy, stabilizes idle, and eliminates secondary misfires across all cylinders in the 4.0L V6 powertrain.

The Stock Nitro Thermal Breakdown and Misfire Vulnerability

Under sustained operating loads and engine bay heat soak, factory coil-on-plug packs on the 4.0L SOHC platform suffer dielectric breakdown in the internal epoxy and secondary windings. This thermal degradation increases primary resistance, causing sporadic misfire codes (P0300-P0306), unburnt fuel loading downstream catalytic converters, and severe throttle hesitation during towing or hard acceleration. Standard copper spark plugs compound the issue with accelerated electrode erosion and widened gaps over standard service intervals.

The Engineering Solution

This complete 6-cylinder refresh kit pairs high-dielectric coil-on-plug units with fine-wire iridium spark plugs. Each ignition coil is engineered with high-conductivity copper windings, thermal-resistant epoxy potting, and OEM-spec blade terminals to maintain consistent arc voltage under high combustion pressures. The companion iridium plugs feature a high-melting-point center electrode that resists spark erosion, delivering crisp kernel development, lower required ignition voltage, and reliable anti-fouling performance under heavy duty cycles.

Technical Specifications

Compatibility

• 2007 Dodge Nitro – 4.0L V6 (R/T, SLT)
• 2008 Dodge Nitro – 4.0L V6 (R/T, SLT)
• 2009 Dodge Nitro – 4.0L V6 (R/T, SLT)
• 2010 Dodge Nitro – 4.0L V6 (R/T, Detonator, Shock)
• 2011 Dodge Nitro – 4.0L V6 (Detonator, Shock)

The Dodge Heavy-Duty Standard

Engineered to handle severe thermal cycling and utility demands, this direct-fit ignition system restores peak towing capacity, cold-start efficiency, and consistent throttle response across the entire rev range.