Ignition Coil and Iridium Spark Plugs for Ford Expedition (2015-2017) 3.5L

High-Dielectric Ignition Coil and Iridium Spark Plug Kit for 2015-2017 Ford Expedition

Direct Replacement Ignition Solution: Delivers high-voltage secondary output to eliminate high-boost spark blowout and restore complete combustion efficiency on the twin-turbocharged 3.5L platform.

The Stock Expedition Ignition Breakdown

Under the high cylinder pressures and heavy thermal loads of the twin-turbo EcoBoost architecture, factory ignition coils experience accelerated insulation breakdown. Extreme engine bay heat soak degrades the internal epoxy resin, resulting in micro-arcing and copper winding resistance shifts. When paired with standard plug gap erosion from high direct-injection cylinder pressures, this leads to spark blowout under heavy throttle, rough idle, and unburned hydrocarbon accumulation.

The Engineering Solution

This direct-replacement kit utilizes high-insulation epoxy filling and durable thermoplastic dielectric housings to contain secondary voltage without leakage. Premium internal copper windings maximize spark energy transfer, while the fine-wire iridium spark plugs provide superior resistance to spark erosion, maintaining tight gap tolerances and crisp flame kernel propagation under peak boost conditions.

Technical Specifications

Compatibility

• 2015-2017 Ford Expedition (3.5L V6 Turbocharged - XL, XLT, Limited, King Ranch, Platinum, EL)

The Ford Towing & Heavy-Duty Caliber

Engineered to handle severe duty cycles, high-payload hauling, and demanding towing conditions without power degradation, spark hesitation, or check engine lights.