Ignition Coil + Spark Plugs for Kia Sorento (2014-2017) 3.3L

High-Output Ignition Coil & NGK Iridium Spark Plug Kit for 2014-2017 Kia Sorento (XM / UM)

What it Does: The complete ignition kit replaces worn coil-on-plug packs and fouled plugs on the 2014-2017 Kia Sorento 3.3L to eliminate cylinder misfires, restore lost combustion efficiency, and stabilize idle.

The Stock Kia Sorento Ignition Breakdown

The transverse layout of the Lambda II GDI 3.3L engine subjects the rear bank ignition coils (cylinders 1, 3, and 5) to severe engine bay heat soak. Over time, factory coil boots suffer thermal degradation, causing dielectric puncture and intermittent high-voltage arc-through to the cylinder head. Combined with electrode erosion and gap widening on high-mileage spark plugs, this secondary ignition resistance overburdens the internal driver circuits, triggering P0300 through P0306 DTC misfire codes, rough cold starts, and sluggish off-idle response.

The Engineering Solution

This comprehensive tune-up kit features six heavy-duty ignition coils engineered with high-dielectric epoxy potting, reinforced thermoplastic housings, and premium magnetic core windings to resist thermal breakdown under sustained loads. Paired with laser-welded NGK Iridium spark plugs featuring ultra-fine center electrodes, this package delivers lower ignition voltage demand, stable flame kernel propagation, and superior anti-fouling characteristics. Replacing both coils and plugs simultaneously prevents premature coil failure caused by excessive plug gap impedance.

What's Included

• 6 Energy Ignition Coils (Direct replacement for UF546)
• 6 NGK Iridium Spark Plugs

Technical Specifications

Compatibility

• 2014-2017 Kia Sorento 3.3L V6 (LX, EX, SX, Limited, SXL)

Frequently Asked Questions & Fitment Warnings

Does this fit the XM and UM Sorento?

Yes, this is a direct fit for the 2014-2017 Kia Sorento equipped with the Lambda II 3.3L V6 engine. Does not fit 2.4L 4-cylinder or 2.0L Turbo applications.

Should spark plugs and coils be torqued to specific factory specifications?

Yes, torque spark plugs to 15-22 lb-ft into clean threads and tighten coil hold-down bolts to 7-8 lb-ft to prevent stripping the valve cover inserts.

The Kia Durability Standard

Crossover platforms carrying passenger loads and light towing duty require consistent high-energy spark delivery across all engine cycles to maintain clean fuel burn and prevent catalytic converter damage.