Ignition Coil and Iridium Spark Plugs for Ford Fusion (2010-2012) 3.5L

Direct-Fit Ignition Coil and Iridium Spark Plug Service Kit for 2010-2012 Ford Fusion 3.5L

What it Does: Delivers high-dielectric secondary voltage and ultra-fine spark kernel propagation across all cylinders to restore factory ignition timing, eliminate intermittent misfires, and stabilize idle combustion dynamics.

The Stock Fusion Duratec 35 Ignition Degradation

Continuous thermal cycling inside the transverse CD3 engine bay accelerates dielectric breakdown within factory coil-on-plug boots and epoxy-sealed windings. Over extended service intervals, increased internal winding resistance triggers secondary voltage leakage, micro-arcing, and spark blowout under open-throttle load. Combined with standard spark plug electrode erosion, these ignition dropouts generate unburnt hydrocarbon spikes, erratic idle surge, and persistent P0300-P0306 cylinder misfire fault codes.

The Engineering Solution

This comprehensive tune-up assembly integrates high-grade internal copper windings insulated by impact-modified thermoplastic housings with OE-spec direct-fit blade terminals. Paired with laser-welded fine-wire iridium spark plugs, the kit minimizes quench area while maintaining high thermal conductivity and electrode integrity under high-RPM operation. Matched to interchange specs UF553 and DG520, it provides stable spark energy, crisp throttle response, and complete flame-front propagation.

Technical Specifications

Compatibility

• 2010 Ford Fusion Sport (3.5L V6 Duratec 35)
• 2011 Ford Fusion Sport (3.5L V6 Duratec 35)
• 2012 Ford Fusion Sport (3.5L V6 Duratec 35)

The Ford Duratec Standard

Built to handle the high volumetric demands of the 3.5L Cyclone V6, this ignition service kit sustains peak cylinder pressure and combustion efficiency across the entire powerband without heat-soak fade.