Ignition Coil + Iridium Spark Plugs for Kia Sorento (2016-2020) 2.4L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2016-2020 Kia Sorento

What it Does: The ignition coil and iridium spark plug kit replaces aged factory ignition components on the 2016-2020 Kia Sorento to eliminate cylinder misfires, restore lost combustion efficiency, and stabilize idle quality.

The Stock Kia Sorento Thermal Breakdown Weakness

The naturally aspirated Theta II GDI engine relies on high cylinder pressures and direct fuel injection, which subjects ignition components to intense thermal cycling and high electrical stress. Over time, the internal primary and secondary windings in the factory 273002GGA0 coil packs experience dielectric breakdown, while the silicone spark plug boots harden and micro-crack. This causes high-voltage arc-over, secondary resistance spikes, and intermittent misfires under heavy acceleration. Concurrently, factory standard-electrode spark plugs suffer from premature gap erosion, increasing required breakdown voltage and compounding stress on the aging coils.

The Engineering Solution

This direct-fit overhaul kit combines high-dielectric epoxy-encapsulated ignition coils with fine-wire iridium spark plugs engineered to exceed OE durability thresholds. The coil assemblies utilize high-grade copper windings and premium magnetic silicon-steel cores to deliver consistent 30+ kV secondary output across all operating temperatures. Paired with laser-welded iridium-tipped spark plugs that feature an ultra-dense ceramic insulator, the kit maintains a stable spark kernel at lower firing voltages. This minimizes quenching effects, provides superior fouling resistance, and guarantees rapid flame propagation within direct-injection combustion chambers.

Technical Specifications

Compatibility

• 2016 Kia Sorento 2.4L L4 (L, LX)
• 2017 Kia Sorento 2.4L L4 (L, LX)
• 2018 Kia Sorento 2.4L L4 (L, LX)
• 2019 Kia Sorento 2.4L L4 (L, LX)
• 2020 Kia Sorento 2.4L L4 (L, LX)

Frequently Asked Questions

Does this fit the UM Sorento?
Yes, this is a direct fit for the 2016-2020 Kia Sorento equipped with the Theta II GDI 2.4L engine.

Should I replace all four ignition coils and spark plugs simultaneously?
Yes, replacing all coils and plugs as a set ensures uniform primary circuit resistance and prevents secondary cylinder imbalances across the ECU monitor.

The Kia Standard

Engineered for everyday family utility and cross-country road trips, this ignition package restores dependable cold-start reliability and clean throttle response under high cabin payloads.