Ignition Coil and Iridium Spark Plugs for Lexus NX300 (2018-2020) 2.0L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2018-2020 Lexus NX300

What it Does: The Ignition Coil and Iridium Spark Plug Kit restores factory combustion efficiency, eliminates cylinder misfires, and stabilizes idle on the 2018-2020 Lexus NX300.

The Stock Lexus NX300 Coil Thermal Breakdown

The high-compression, direct-injected 2.0L turbo 8AR-FTS engine generates intense thermal loads and high cylinder pressures that deteriorate ignition hardware over time. Prolonged heat soak breaks down the internal epoxy potting and secondary copper windings within the factory pencil coils, causing dielectric breakdown and voltage leak. Simultaneously, electrode erosion expands plug gaps, leading to spark blowout under boost, sluggish throttle response, reduced fuel economy, and P0300–P0304 misfire diagnostic trouble codes.

The Engineering Solution

This comprehensive ignition service package provides four heavy-duty pencil ignition coils paired with laser-welded fine-wire iridium spark plugs. Engineered to match factory dwell timing and secondary output curves, the coils feature high-dielectric resin and reinforced silicone boots to eliminate internal flashover and arcing. The iridium-tipped center electrodes provide exceptional thermal conductivity, resisting carbon fouling and high-boost quenching to ensure immediate flame kernel propagation and dependable cold starts.

Technical Specifications

Compatibility

• 2018 Lexus NX300 Base, F Sport, Luxury (2.0L Turbo I4)
• 2019 Lexus NX300 Base, F Sport, Luxury (2.0L Turbo I4)
• 2020 Lexus NX300 Base, F Sport, Luxury (2.0L Turbo I4)

Frequently Asked Questions

Does this fit the AZ10 NX300?
Yes, this is a direct fit for the 2018-2020 Lexus NX300 equipped with the 8AR-FTS 2.0L turbo engine.

Do these iridium spark plugs require manual gapping?
No, the included iridium plugs are factory pre-gapped specifically for the 2.0L turbo application to prevent damage to the fine-wire center electrode.

The Lexus Standard

Engineered to deliver clean combustion and factory-smooth power transfer, this kit restores crisp turbo responsiveness without throwing CEL codes or compromising luxury-tier NVH characteristics.