Ignition Coil and Iridium Spark Plugs for Subaru BRZ (2017-2020) 2.0L

Direct-Replacement Ignition Coil and Iridium Spark Plugs for 2017-2020 Subaru BRZ

Restores optimal combustion and eliminates misfires by delivering a consistent, high-voltage spark to the FA20 engine. This comprehensive ignition overhaul kit includes four precision-wound ignition coils and four iridium-tipped spark plugs designed specifically for the high-revving 2.0L boxer architecture.

The Stock BRZ Ignition Weakness

The FA20D engine is notorious for generating substantial under-hood temperatures, especially near the cylinder heads where the ignition coils are mounted directly into the valve covers. Over time, this constant heat cycling degrades the internal epoxy and primary windings of the factory coils, leading to internal resistance variations. Simultaneously, the OEM spark plug electrodes wear down under the stress of high-compression direct and port injection cycles (D-4S). This degradation manifests as high-RPM hesitation, erratic idle quality, worsening fuel economy, and eventually, P0300-series random misfire trouble codes that compromise drivability.

The Engineering Solution

This replacement ignition kit directly addresses factory thermal limitations. The new ignition coils feature upgraded copper windings and high-dielectric epoxy resin, ensuring consistent voltage multiplication even under severe heat soak conditions. The boots utilize high-temperature silicone to prevent arcing and lock out moisture. Matched with these coils are four premium iridium spark plugs, which feature an ultra-fine center electrode. Iridium's exceptional hardness prevents gap erosion over tens of thousands of miles, ensuring a concentrated spark kernel for complete fuel burn. This combination restores factory throttle response, stabilizes idle parameters, and ensures the engine pulls cleanly to its 7,400 RPM redline without spark blowout.

Technical Specifications

Compatibility

• 2017 Subaru BRZ 2.0L
• 2018 Subaru BRZ 2.0L
• 2019 Subaru BRZ 2.0L
• 2020 Subaru BRZ 2.0L

The Subaru JDM Standard

Built to handle the demanding high-RPM nature of the boxer platform, this ignition package guarantees restored power delivery and a smooth idle, getting your ZC6 back to peak naturally aspirated performance without throwing check engine lights.