Ignition Coil and Iridium Spark Plugs for Kia Sorento (2018-2020) 3.3L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2018-2020 Kia Sorento

What it Does: The ignition coil and iridium spark plug kit restores combustion efficiency and primary spark energy on the 2018-2020 Kia Sorento to eliminate misfires, stabilize idle, and maintain factory fuel economy.

The Stock Kia Sorento Coil Breakdown

In the transverse-mounted 3.3L Lambda II GDI (G6DH) engine, the rear bank pencil coils endure intense thermal soak from the adjacent exhaust manifold and tightly packaged cylinder head. Over time, high operational temperatures degrade the OEM epoxy potting and secondary copper winding insulation. This thermal fatigue results in internal dielectric breakdown, micro-arcing, and spark energy dissipation. Concurrently, factory direct-injection cylinder pressures cause electrode erosion and excessive plug gap widening, driving primary circuit resistance beyond factory thresholds and triggering diagnostic trouble codes P0300 through P0306 under heavy throttle loads.

The Engineering Solution

This comprehensive ignition service kit provides six direct-fit coil-on-plug pencil coils paired with fine-wire iridium spark plugs designed specifically for the UM chassis platform. The ignition coils feature high-purity electrolytic copper windings sealed in impact-resistant, vacuum-impregnated epoxy resin to eliminate internal flashover and resist thermal cycling breakdown. The matched iridium spark plugs utilize laser-welded fine-wire center electrodes that demand lower ionization voltage while providing superior thermal dissipation under high cylinder pressures. This configuration ensures an instantaneous, high-energy spark kernel across the entire rev band, directly restoring throttle response. Replaces OEM interchange numbers 273103L000 and UF844.

Technical Specifications

Compatibility

• 2018 Kia Sorento 3.3L V6 (LX, EX, SX, SX Limited)
• 2019 Kia Sorento 3.3L V6 (L, LX, EX, SX, SX Limited, S)
• 2020 Kia Sorento 3.3L V6 (LX, EX, SX, S)

Frequently Asked Questions

Does this fit the UM Sorento?
Yes, this is a direct fit for the 2018-2020 Kia Sorento equipped with the 3.3L Lambda II GDI engine.

Are the included iridium spark plugs pre-gapped?
Yes, the spark plugs are pre-calibrated to factory direct-injection gap tolerances for immediate drop-in installation.

The Kia CUV Reliability Standard

Engineered to handle the continuous mechanical demands of heavy passenger transport and family towing, this ignition kit delivers uniform spark propagation to protect catalytic converters from raw fuel wash and maintain steady power on uphill grades.