Ignition Coil and Iridium Spark Plugs for Scion xD (2008-2014) 1.8L

Direct-Fit Ignition Coil and Iridium Spark Plug Service Kit for 2008-2014 Scion xD

What it Does: Restores factory secondary ignition output and precise flame front propagation across all four cylinders to eliminate misfires, rough idle, and unburnt fuel waste.

The Stock xD Ignition Breakdown

The high-compression 1.8L 2ZR-FE engine operates with tight thermal tolerances inside a compact engine bay. Over extended service intervals, factory coil-on-plug (COP) assemblies suffer thermal fatigue, breaking down internal epoxy insulation and degrading primary/secondary copper windings. This dielectric breakdown leads to secondary voltage leakage, intermittent spark dropouts under load, and carbon tracking along the plug ceramic. Worn factory plugs develop widened electrode gaps, forcing aged coils to draw excess primary current, which causes hesitation, reduced fuel efficiency, and P0300-P0304 DTCs.

The Engineering Solution

This full service kit features four direct-replacement ignition coils engineered with high-grade copper windings and premium thermoplastic housings to resist thermal breakdown and oil contamination. Matched with four fine-wire iridium spark plugs, the kit ensures low required firing voltage and concentrated spark energy across the combustion chamber. The direct-fit blade terminals and factory-keyed connectors ensure zero resistance loss, restoring crisp throttle response and stable idle dynamics.

Technical Specifications

Compatibility

• 2008-2014 Scion xD Base Hatchback 4-Door 1.8L 1798CC l4 GAS DOHC Naturally Aspirated

The Scion Reliability Standard

Built for the daily-driven demands of compact JDM platforms, this ignition kit delivers consistent spark discharge throughout the RPM band, keeping your 2ZR-FE operating at peak efficiency without misfire-induced catalytic converter damage.