Ignition Coil Spark Plugs for Ford Bronco Sport (2021-2023) 2.0L

Direct-Replacement Ignition Coil and Spark Plug Kit for 2021-2023 Ford Bronco Sport (CX430)

What it Does: The ignition coil and iridium spark plug kit replaces degraded factory ignition hardware on the 2021-2023 Ford Bronco Sport to eliminate engine misfires and restore complete combustion efficiency under boost.

The Stock Ford Bronco Sport Thermal Breakdown and Voltage Leakage

The turbocharged 2.0L EcoBoost inline-four operates under extreme cylinder pressures and high underhood thermal stress. Over duty cycles, the factory coil-on-plug (COP) primary and secondary windings suffer dielectric breakdown due to persistent heat soak. This thermal fatigue causes internal micro-arcing, weakened secondary spark voltage, and boot carbon tracking. Paired with eroded factory spark plug gaps, the compromised system triggers intermittent ignition blowout under high manifold pressure, manifesting as hesitation under load, cylinder misfire codes (P0300–P0304), a rough idle, and unburned hydrocarbon wash that threatens catalytic converter integrity.

The Engineering Solution

This full tune-up assembly addresses secondary ignition loss with high-dielectric epoxy-filled windings and durable silicone boots engineered to resist continuous operating heat and high-voltage burn-through. The COP units interface directly with the factory multi-pin harness, preventing signal drop without wiring modification. Paired with fine-wire iridium spark plugs, the assembly utilizes a high-melting-point iridium center electrode that significantly lowers required firing voltage across varying boost levels. The reduced electrode surface area ensures stable flame kernel propagation, prevents premature gap erosion, and maintains peak combustion stability across all four cylinders.

What's Included

• 4 Ignition Coils (black)
• 4 Iridium Spark Plugs

Technical Specifications

Compatibility

• 2021 Ford Bronco Sport Badlands / First Edition (2.0L I4)
• 2022 Ford Bronco Sport Badlands (2.0L I4)
• 2023 Ford Bronco Sport Badlands / Heritage Limited Edition (2.0L I4)

Frequently Asked Questions & Fitment Warnings

Does this fit the CX430 Bronco Sport?

Yes, this is a direct fit for the 2021-2023 Ford Bronco Sport equipped with the 2.0L EcoBoost engine. This kit does not fit 1.5L EcoBoost 3-cylinder models.

Should dielectric grease be used during installation?

Applying a thin film of dielectric grease inside the boot base ensures a moisture-tight seal and prevents terminal boot adhesion to the spark plug insulator over high-temperature heat cycles.

The Ford Trail Reliability Standard

Engineered to handle sustained loads and off-road trail conditions, this ignition service kit ensures consistent firing reliability, preventing cylinder cut-out when negotiating steep inclines or traversing remote backcountry terrain.