Ignition Coil and Iridium Spark Plugs for Mazda MX-5 Miata (2016-2023) 2.0L

Direct-Replacement Ignition Coil and Iridium Spark Plugs for 2016-2023 Mazda MX-5 Miata

What it Does: This complete ignition kit replaces worn or failing factory coils and plugs to restore optimal spark energy, smooth out idle variations, and eliminate high-RPM misfires in the Skyactiv-G 2.0L.

The Stock MX-5 Miata Ignition Weakness

Over multiple heat cycles in the tight ND engine bay, the OEM ignition coils on the 2.0L Skyactiv-G are prone to thermal degradation. The internal windings and epoxy resin break down over time, leading to internal voltage leaks and weak spark delivery under load. Simultaneously, factory spark plug electrodes wear down naturally, increasing the spark gap beyond factory tolerances. This specific combination manifests mechanically as rough idling, delayed throttle response, reduced fuel economy, and eventual P0300-series misfire codes, especially when pushing the vehicle through aggressive canyon carving or extended high-RPM track sessions.

The Engineering Solution

This comprehensive kit includes four high-output ignition coils and four premium iridium spark plugs engineered to meet or exceed strict OEM specifications. The ignition coils utilize upgraded internal copper windings and high-dielectric epoxy to actively resist heat soak, ensuring consistent, high-voltage energy transfer directly to the plug. The included iridium spark plugs feature an ultra-fine center electrode and superior heat dissipation characteristics. This advanced iridium construction drastically lowers the required firing voltage while maintaining a precise, stable spark gap over its entire service life. The mechanical result is a complete restoration of combustion efficiency, yielding crisper throttle inputs, a stabilized idle, and reliable power delivery across the entire ND RPM band.

Technical Specifications

Compatibility

• 2016-2023 Mazda MX-5 Miata 2.0L

The Mazda Caliber

Engineered to match the precise driving dynamics of the ND chassis, this ignition overhaul ensures your Skyactiv-G engine delivers the linear power, efficiency, and responsive throttle that JDM enthusiasts demand from their roadsters.