Ignition Coil and Iridium Spark Plugs for Ford F-150 (2017-2020) 3.5L EcoBoost

High-Output Ignition Coil and Iridium Spark Plug Kit for 2017-2020 Ford F-150 (P552)

What it Does: The complete ignition tune-up kit replaces aged factory ignition components on the 2017-2020 Ford F-150 to eliminate high-boost spark blowout and restore stable combustion under heavy engine load.

The Stock Ford F-150 Ignition Breakdown Under Boost

Direct-injected, turbocharged engines place substantial dielectric load on ignition coils. In the P552 chassis equipped with the second-generation 3.5L EcoBoost, continuous thermal cycling causes internal potting resin to fail and degrades secondary coil windings. As manifold pressure climbs under towing or acceleration, cylinder resistance increases, causing weak coils to experience internal dielectric breakdown or secondary voltage tracking down the boots. The resulting spark blowout triggers rough idling, sluggish throttle response, and cylinder misfire DTCs (P0300–P0306). Factory plugs also suffer electrode erosion, expanding gap width and further stressing deteriorated coils.

The Engineering Solution

This refresh package restores ignition saturation with direct-fit coil-on-plug units and matched fine-wire iridium plugs. The coils feature dense, epoxy-filled windings and durable, heat-resistant silicone boots engineered to prevent arcing and withstand underhood thermal soak. Designed with OEM-spec 3-blade connectors, each coil bolts directly into the factory aluminum cylinder head location without harness alteration. The companion fine-wire iridium spark plugs feature a minimal center electrode profile, lowering required firing voltage while offering exceptional resistance to high-temperature spark erosion, stabilizing gap integrity under heavy boost.

What's Included

• 6x Black Ignition Coils (Coil-on-Plug, 3-Blade Connector)
• 6x Fine-Wire Iridium Spark Plugs

Technical Specifications

Compatibility

• 2017-2020 Ford F-150 3.5L V6 Twin Turbo EcoBoost
• 2017-2020 Ford F-150 Raptor 3.5L V6 High-Output Twin Turbo EcoBoost

Frequently Asked Questions & Fitment Warnings

Does this fit the P552 F-150?

Yes, this is a direct fit for the 2017-2020 Ford F-150 equipped with the 3.5L EcoBoost engine. Does not fit 2016-2017 naturally aspirated 3.5L V6 models, nor does it fit 2011-2016 first-generation EcoBoost engines.

What are the critical installation precautions for this kit?

Torque spark plugs strictly to factory specification into the aluminum cylinder heads to avoid thread damage, and apply a light film of dielectric grease inside the boots to prevent high-voltage tracking.

The Ford Towing & Heavy-Duty Caliber

Engineered to handle the intense thermal cycling and high manifold pressure of severe-duty towing, this ignition kit provides steady arc delivery across all six cylinders under heavy payloads.