Ignition Coil + Iridium Spark Plugs for Kia Sportage (2017-2022) 2.4L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2017-2022 Kia Sportage

What it Does: The complete ignition service kit replaces worn factory coil-on-plug packs and fouled spark plugs on the 2017-2022 Sportage to restore combustion efficiency, eliminate cylinder misfires, and stabilize idle quality.

The Stock Kia Sportage Secondary Ignition Breakdown

In the direct-injected 2.4L Theta II GDI powerplant, high combustion pressures and sustained thermal cycling aggressively degrade secondary ignition components. Over time, the internal primary and secondary copper windings inside the factory coil packs break down due to dielectric breakdown, leading to voltage leakage, intermittent spark delivery, and hesitation under load. Simultaneously, standard plugs experience electrode erosion from high-energy cylinder events, widening the gap past factory tolerances and overworking the coil drivers in the ECU, ultimately triggering P0300 through P0304 diagnostic trouble codes.

The Engineering Solution

This drop-in maintenance kit provides four high-dielectric epoxy-molded ignition coils paired with fine-wire iridium spark plugs engineered to withstand severe thermal stress. The ignition coils feature heat-resistant thermoplastic housings and silicone boots that prevent flashover and moisture intrusion. High-conductivity internal copper windings deliver consistent secondary kilovolt output across the entire RPM band. The companion iridium-tipped plugs feature a laser-welded fine-wire center electrode and a trivalent metal-plated shell to resist corrosion, prevent fouling, and require significantly less firing voltage than traditional copper or platinum alternatives.

Technical Specifications

Compatibility

• 2017-2022 Kia Sportage 2.4L L4 Naturally Aspirated (Chassis: QL)

Frequently Asked Questions

Does this fit the QL Sportage?
Yes, this is a direct fit for the 2017-2022 Kia Sportage equipped with the 2.4L Theta II GDI engine.

Do the iridium spark plugs need to be pre-gapped prior to installation?
The iridium plugs arrive pre-gapped to factory specification, but clearance should always be verified with a feeler gauge without prying against the fragile center electrode.

The Kia Precision Standard

Engineered to match OEM electrical impedance and dwell mapping, this ignition refresh guarantees reliable cold starts, zero check-engine lights, and smooth combustion under heavy commuting conditions.