Ignition Coil and Iridium Spark Plugs for Hyundai Ioniq (2017-2022) 1.6L

Direct-Replacement Ignition Coil and Iridium Spark Plug Kit for 2017-2022 Hyundai Ioniq

What it Does: The complete ignition kit replaces worn factory coil packs and degraded spark plugs on the 2017-2022 Hyundai Ioniq to restore combustion efficiency, eliminate misfires, and stabilize idle across hybrid drive cycles.

The Stock Hyundai Ioniq Thermal Breakdown and Secondary Voltage Loss

The factory ignition coils on the AE platform endure rapid thermal cycling due to the frequent engine start-stop sequences inherent to hybrid operation. Over time, internal epoxy insulation breaks down, leading to dielectric punch-through, secondary voltage degradation, and intermittent cylinder misfires (DTC P0300 through P0304). Furthermore, factory standard plugs suffer from electrode erosion and gap widening in the high-compression Atkinson-cycle Kappa II G4LE engine, causing hard switching between electric and internal combustion modes, degraded fuel economy, and unburnt hydrocarbon buildup.

The Engineering Solution

This matched ignition refresh features four high-dielectric pencil ignition coils engineered to directly replace OEM numbers 2730103HA0 and UF843. Built with high-purity copper windings, high-grade silicon magnetic steel cores, and heat-resistant thermoplastic housings, these coils deliver consistent secondary energy to resist heat soak under heavy transient loads. Paired with fine-wire iridium-tipped spark plugs featuring trivalent metal plating to prevent corrosion and anti-fouling thermal insulators, the kit maintains a stable spark gap, prevents quench, and optimizes flame-front propagation during lean-burn Atkinson cycles.

Technical Specifications

Compatibility

• 2017-2022 Hyundai Ioniq Hybrid (Blue, SEL, Limited) 1.6L L4
• 2018-2022 Hyundai Ioniq Plug-in Hybrid PHEV (Base, SEL, Limited) 1.6L L4

Frequently Asked Questions

Does this fit the AE Ioniq?
Yes, this is a direct fit for the 2017-2022 Hyundai Ioniq equipped with the 1.6L Kappa II G4LE engine.

Are these spark plugs pre-gapped for the Atkinson hybrid engine?
Yes, the iridium plugs arrive pre-gapped to factory Atkinson-cycle specifications for direct drop-in installation.

The Hyundai Hybrid Caliber

Engineered to meet the stringent demands of high-efficiency Atkinson-cycle powertrains, this direct-fit ignition kit ensures smooth hybrid combustion transitions, zero CEL illumination, and factory-matched secondary coil output.