Ignition Coil and Iridium Spark Plugs for Dodge Durango (2004-2008) 3.7L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2004-2008 Dodge Durango

Primary Function: This complete 6-cylinder ignition overhaul kit restores factory spark energy and cylinder combustion efficiency on the 3.7L PowerTech V6 engine.

The Stock Durango Secondary Ignition Breakdown

Factory coil-on-plug modules on the Dodge Durango 3.7L routinely degrade due to continuous thermal cycling in congested engine bays. Over time, original epoxy insulation suffers internal dielectric breakdown and copper primary windings develop micro-shorts. Concurrently, standard copper or platinum plugs experience electrode erosion, widening the spark gap. This combined degradation causes secondary voltage leakage, cylinder misfires under load, rough idle, increased emissions, and premature catalytic converter fouling.

The Engineering Solution

This direct-replacement kit pairs six reinforced coil packs with six precision fine-wire iridium spark plugs. The coil assemblies feature high-grade magnetic copper windings insulated with premium dielectric epoxy to resist high-voltage tracking and thermal breakdown under severe duty. Combined with laser-welded iridium electrode spark plugs that require lower firing voltage and resist spark erosion, this kit delivers consistent spark delivery, sharp throttle response, stable idle, and complete fuel burn.

Technical Specifications

Compatibility

• 2004-2008 Dodge Durango (3.7L V6 SOHC)
• Direct interchange with OE numbers: UF270, 56028138AB, 56028138AD, 56028138AE, 56028138AF, 56028138, 52-2034, 5C1114

The Dodge Truck Caliber

Engineered to handle sustained thermal loads and the demands of daily towing or hauling, this complete ignition refresh maintains steady combustion pressures to eliminate misfire-related power loss under load.