Ignition Coil and Iridium Spark Plugs for Scion xB (2010-2015) 2.4L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2010-2015 Scion xB

Primary Function: Restores factory ignition energy and combustion efficiency by replacing degraded coil-on-plug packs and worn spark plugs across all four cylinders.

The Stock xB Ignition Breakdown

The 2.4L 2AZ-FE engine subjects top-mounted ignition coils to sustained thermal cycling within a compact engine bay. Over extended mileage, factory coil windings suffer from dielectric breakdown, internal insulation degradation, and micro-cracking in the epoxy casing. Concurrently, standard spark plug electrodes erode, widening the spark gap. This combined deterioration results in high-rpm spark blowout, intermittent misfires, sluggish throttle response, reduced fuel economy, and unburned hydrocarbon build-up on downstream catalytic converters.

The Engineering Solution

This comprehensive service kit includes four high-dielectric coil packs and four precision-gapped iridium spark plugs engineered to exceed OEM durability. Each ignition coil features high-purity electrolytic copper windings sealed in high-temperature epoxy to prevent arc-through under load, paired with corrosion-resistant blade terminals for optimal electrical conductivity. The included iridium spark plugs utilize fine-wire center electrodes that require lower voltage to bridge the gap, promoting faster flame kernel expansion, crisp throttle response, and stable idle stability.

Technical Specifications

Compatibility

• 2010 Scion xB Base 2.4L L4 Gas (2AZ-FE)
• 2011 Scion xB Base 2.4L L4 Gas (2AZ-FE)
• 2012 Scion xB Base 2.4L L4 Gas (2AZ-FE)
• 2013 Scion xB Base 2.4L L4 Gas (2AZ-FE)
• 2014 Scion xB Base 2.4L L4 Gas (2AZ-FE)
• 2015 Scion xB Base 2.4L L4 Gas (2AZ-FE)

The Scion JDM Tuner Benchmark

Engineered to deliver clean, uninterrupted spark delivery, this complete ignition refresh ensures the high-revving 2AZ-FE delivers linear power band performance, smooth idle, and maximum combustion efficiency without triggering check engine lights.