Ignition Coil and Iridium Spark Plugs for Ford Fiesta (2014-2016) 1.6L

Direct-Replacement Ignition Coil and Iridium Spark Plug Kit for 2014-2016 Ford Fiesta

Direct-Fit Ignition Overhaul: Restores secondary ignition integrity, stabilizes erratic idle, and eliminates high-rpm cylinder misfires across the naturally aspirated and turbocharged 1.6L 4-cylinder platform.

The Stock Fiesta Ignition Weakness

Factory ignition coils mounted deep within the cylinder head on the 1.6L platform are subjected to continuous thermal cycling and trapped engine heat. Over time, heat soak degrades the internal primary and secondary copper windings, while dry-rotted silicone spark plug boots permit high-voltage dielectric breakdown and spark scatter. When paired with worn OEM plugs, the increased spark gap places excess resistance on the coil drivers, triggering hesitation under load, poor cold-start combustion, and P0300-series misfire codes.

The Engineering Solution

This comprehensive ignition pack features four heavy-duty ignition coils paired with fine-wire iridium spark plugs. The coils utilize premium-grade internal copper windings and high-dielectric epoxy encapsulation to resist thermal degradation and maintain consistent millijoule energy transfer. The high-melting-point iridium center electrodes optimize flame-front propagation, lower ignition voltage requirements, and ensure clean, complete fuel burn throughout the rev range.

Technical Specifications

Compatibility

• 2014 Ford Fiesta 1.6L 4-Cylinder
• 2015 Ford Fiesta 1.6L 4-Cylinder
• 2016 Ford Fiesta 1.6L 4-Cylinder
• Interchange Reference: UF674, UF-674, BM5Z-12029-B, BM5Z12029B, BM5G-12A366-DA, GN10644, 5C1887, C1830

The Ford Precision Standard

Calibrated specifically to factory ECU dwell times, this ignition kit delivers reliable cold-weather starting, linear throttle response, and smooth power delivery without triggering false CEL misfire codes.