Ignition Coil + Spark Plugs for Ford F-350 (2020-2022) 7.3L

Direct-Fit Ignition Coil and Spark Plug Kit for 2020-2022 Ford F-350

What it Does: The ignition coil and spark plug tune-up kit restores factory spark energy and cylinder combustion efficiency across all eight cylinders on the 2020-2022 Ford F-350 7.3L Godzilla to eliminate high-load misfires and rough idling.

The Stock Ford F-350 Thermal Breakdown and Secondary Voltage Loss

The high-displacement pushrod architecture of the Ford Godzilla 7.3L engine generates immense underhood thermal stress, especially under heavy payload and severe fifth-wheel towing duties. Factory coil packs mounted on the P558 platform endure severe heat soak cycles that degrade internal copper windings, break down dielectric epoxy insulation, and cause spark plug electrode erosion over time. This insulation fatigue introduces secondary voltage leakage, erratic burn rates, intermittent spark blow-out under peak cylinder pressures, and persistent P0300 through P0308 diagnostic trouble codes.

The Engineering Solution

This complete 8-cylinder ignition overhaul kit pairs high-dielectric coil-on-plug modules with factory-specified spark plugs to re-establish a stable, high-energy spark arc. Each ignition coil features vacuum-impregnated high-grade magnetic copper wiring encased in heat-resistant, impact-modified thermoplastic housings that resist thermal degradation and cracking. Paired with fine-wire spark plugs engineered for superior resistance to spark erosion and high combustion chamber pressures, this kit eliminates spark drop-off, restores dynamic throttle response, and provides dependable cold-start reliability without ECU recalibration.

Technical Specifications

Compatibility

• 2020 Ford F-350 Super Duty 7.3L V8 Godzilla Gas
• 2021 Ford F-350 Super Duty 7.3L V8 Godzilla Gas
• 2022 Ford F-350 Super Duty 7.3L V8 Godzilla Gas

Frequently Asked Questions

Does this fit the P558 F-350?
Yes, this is a direct fit for the 2020-2022 Ford F-350 equipped with the 7.3L Godzilla engine.

Should the spark plug gaps be checked prior to installation?
Yes, verify each plug matches factory gap specifications (0.051-0.055 in) and torque to 11-15 lb-ft before reinstalling the ignition coils.

The Ford Heavy-Duty Towing Standard

Designed to withstand continuous heavy commercial use, extreme tongue weights, and sustained high-RPM operation, this ignition kit delivers the thermal resilience and spark integrity required to keep your Super Duty operating under maximum load.