Ignition Coil and Iridium Spark Plugs for Ford Mustang (2018-2020) 5.0L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2018-2020 Ford Mustang

Designed For: Restoring factory spark output, combustion stability, and throttle response by eliminating ignition misfires in the high-compression Gen 3 Coyote 5.0L V8.

The Stock Mustang Thermal Degradation and Misfire Vulnerability

Under demanding operating conditions, the S550 engine bay exposes coil-on-plug modules to intense thermal cycling. Over time, heat soak degrades the internal insulation and primary/secondary windings, causing resistance spikes and spark leakage. Coupled with electrode gap erosion on aged plugs, this leads to spark blowout under heavy load, erratic idle, loss of high-RPM power, and diagnostic trouble codes (DTCs).

The Engineering Solution

This comprehensive tune-up kit features eight direct-replacement ignition coils engineered with high-purity internal copper windings and premium dielectric epoxy potting to resist thermal breakdown and arc-over. Paired with eight fine-wire iridium spark plugs, this kit provides a lower required firing voltage and superior quench resistance, ensuring stable flame kernel propagation, smooth idle characteristics, and consistent ignition throughout the full 7,500 RPM band.

Technical Specifications

Compatibility

• 2018 Ford Mustang GT (5.0L V8 Fastback & Convertible)
• 2019 Ford Mustang GT (5.0L V8 Fastback & Convertible)
• 2019 Ford Mustang Bullitt (5.0L V8 Fastback)
• 2020 Ford Mustang GT (5.0L V8 Fastback & Convertible)
• 2020 Ford Mustang Bullitt (5.0L V8 Fastback)

The Ford Muscle Caliber

Engineered to meet the stringent demands of high-revving naturally aspirated V8 applications, ensuring optimal combustion chamber efficiency, sharp throttle response, and uncompromised horsepower delivery.