Ignition Coil & Iridium Spark Plugs for Scion FR-S (2013-2014) 2.0L

Direct-Fit Ignition Coil & Iridium Spark Plugs for 2013-2014 Scion FR-S

Restores lost combustion efficiency and eliminates high-RPM misfires in the FA20 boxer engine by replacing degraded factory ignition coils and worn spark plugs with OEM-grade equivalents.

The Stock FR-S Ignition Degradation

The FA20 boxer engine in the ZN6 chassis is notorious for subjecting its ignition components to severe thermal stress. Positioned horizontally deep within the engine bay and dangerously close to the exhaust headers, the factory ignition coils suffer from extreme heat soak over extended mileage. This continuous thermal cycling degrades the internal epoxy and primary windings, leading to increased electrical resistance. As the factory spark plug gaps widen from standard electrode wear, the weakened coils struggle to bridge the gap under load. This results in inconsistent spark timing, rough idling, hesitation during acceleration, and cylinder misfires—particularly in the upper RPM band where the FR-S requires precise spark delivery to maintain peak naturally aspirated power.

The Engineering Solution

This comprehensive ignition kit provides a direct replacement solution utilizing high-dielectric epoxy and reinforced polymer housings designed to withstand the high temperatures characteristic of the boxer engine layout. The upgraded coil packs deliver optimal voltage output, ensuring a strong, consistent arc across the entire RPM range. Paired with pre-gapped iridium spark plugs, this system maximizes spark efficiency. Iridium’s high melting point and superior hardness allow for a fine-wire center electrode, which dramatically lowers the voltage requirement for spark creation while providing exceptional durability against combustion chamber erosion. This synergy between the high-output coils and iridium plugs restores crisp throttle response, stabilizes idle vacuum, and ensures complete combustion events, ultimately preventing unburnt fuel from damaging the catalytic converter.

Technical Specifications

Compatibility

• 2013 Scion FR-S 2.0L
• 2014 Scion FR-S 2.0L

The Scion Precision

Maintaining reliable spark delivery is critical for the high-revving nature of modern JDM boxer engines, ensuring consistent linear power delivery, avoiding check engine lights (CEL), and keeping your sports coupe performing at its peak on the street or track.