Ignition Coil & Iridium Spark Plugs for Hyundai Sonata (2009-2015) 2.4L I4

High-Performance Ignition Coil & Iridium Spark Plug Kit for 2009-2015 Hyundai Sonata

What it does: This direct-replacement ignition kit restores spark energy and resolves misfires for the 2.4L Theta II engine, featuring OE+ durability coils and Iridium spark plugs for optimized combustion.

The Stock Sonata Ignition Shortcomings

The factory ignition coils on the 2.4L Theta II engine are notorious for thermal degradation over time. As the engine cycles through countless heat waves, the OEM internal epoxy and primary windings break down, leading to increased electrical resistance. This thermal stress ultimately results in weak spark delivery, intermittent misfires under load, rough idling, and diminished fuel economy. Furthermore, factory copper or platinum plugs naturally wear down their electrode gap, exacerbating the stress placed on the aging coils and frequently triggering dreaded P0300-series CEL codes.

The Engineering Solution

This upgraded ignition kit addresses these thermal and electrical failure points by utilizing heavy-duty copper wire internals within the coils, vastly reducing resistance and heat generation. The coils feature a high-dielectric epoxy resin and robust silicone boots to prevent voltage leaks and withstand extreme engine bay temperatures. Paired with 4X Iridium spark plugs, this package delivers up to a 15% increase in spark energy. The ultra-fine iridium center electrode ensures a highly concentrated spark, providing a more complete fuel burn, faster throttle response, and a stable idle. The direct-fit 3-pin blade terminal design guarantees a plug-and-play installation, restoring factory performance and exceeding OEM reliability.

Technical Specifications

Compatibility

• 2009 Hyundai Sonata 2.4L I4
• 2010 Hyundai Sonata 2.4L I4
• 2011 Hyundai Sonata 2.4L I4
• 2012 Hyundai Sonata 2.4L I4
• 2013 Hyundai Sonata 2.4L I4
• 2014 Hyundai Sonata 2.4L I4
• 2015 Hyundai Sonata 2.4L I4

The Hyundai Reliability Standard

Engineered for longevity, this ignition overhaul ensures your Sonata maintains smooth daily drivability, optimal fuel efficiency, and precise combustion timing without triggering nuisance check engine lights.