Ignition Coil & Iridium Spark Plugs for Toyota 4Runner (2010) 2.7L

Direct-Replacement Ignition Coil & Iridium Spark Plugs for Toyota 4Runner (2TR-FE / N280)

Restores lost ignition efficiency and eliminates misfires: This complete ignition service kit replaces degraded factory coils and fouled plugs to deliver a consistent, high-voltage spark for the 2.7L 2TR-FE engine.

The Stock 4Runner Ignition Degradation

The OEM ignition coils and standard spark plugs on the 2.7L N280 4Runner are notorious for thermal degradation over high-mileage cycles. Constant exposure to extreme engine bay temperatures causes the epoxy resin inside the factory coil packs to break down, leading to internal arcing, voltage leaks, and intermittent misfires. Simultaneously, standard copper or worn platinum spark plugs suffer from accelerated electrode erosion under heavy loads. This combination results in sluggish throttle response, increased unburnt fuel in the exhaust, rough idling, and a noticeable drop in overall fuel economy, especially when hauling or navigating steep inclines.

The Engineering Solution

This comprehensive service kit upgrades the ignition system with high-output ignition coils and performance iridium spark plugs. The coils feature advanced dielectric epoxy and upgraded primary/secondary copper windings to resist heat soak and ensure maximum voltage transfer to the plug. The included iridium spark plugs utilize a fine-wire center electrode that requires less voltage to fire while offering superior resistance to electrical wear and thermal breakdown. This synergy translates to a stronger, more concentrated spark kernel, promoting complete combustion, stabilizing the idle, and fully restoring the engine's factory torque curve and mechanical efficiency.

Technical Specifications

Compatibility

• 2010 Toyota 4Runner 2.7L 4-Cylinder

The Toyota Durability Standard

For trucks and SUVs built for overlanding and utility, maintaining peak ignition performance is critical for off-road reliability and consistent low-end torque delivery. This kit ensures your N280 remains dependable on the trail and efficient on the highway.