Ignition Coil and Iridium Spark Plugs for Kia Telluride (2020-2023) 3.8L

Direct-Fit Ignition Coil and Iridium Spark Plug Service Kit for 2020-2023 Kia Telluride

What it Does: The ignition coil and iridium spark plug kit replaces degraded factory ignition components on the 2020-2023 Kia Telluride to eliminate cylinder misfires, stabilize idle fluctuations, and restore combustion efficiency.

The Stock Kia Telluride Secondary Ignition Breakdown

The 3.8L V6 in the ON chassis Telluride operates on a high-compression Atkinson cycle, placing continuous thermal load on the factory pencil coils. Over extended heat cycles, the original coil boots experience dielectric breakdown, allowing spark voltage to arc to the cylinder head wall rather than firing across the plug gap. Simultaneously, factory spark plug ground electrodes erode from carbon fouling and extended dwell times, widening the plug gap past nominal tolerance. This impedance jump strains the primary coil windings, leading to hesitation under load, delayed throttle response, and secondary misfire codes like P0300 through P0306.

The Engineering Solution

This comprehensive tune-up kit replaces all six coil-on-plug units and spark plugs with heavy-duty components engineered to match factory dwell timing and resistance profiles. The pencil coils feature high-grade magnetic silicon steel cores and thermal-resistant epoxy potting to resist thermal shock and voltage leakage. Paired with fine-wire iridium-tipped center electrodes and platinum ground pads, the kit maintains a precise arc gap under high chamber pressures. Direct interchange compatibility with OEM part numbers 273103L000 and UF844 ensures exact harness pinout engagement without requiring harness adapters or baseline ECU calibration adjustments.

Technical Specifications

Compatibility

• 2020 Kia Telluride (LX, S, EX, SX) 3.8L V6
• 2021 Kia Telluride (LX, S, EX, SX) 3.8L V6
• 2022 Kia Telluride (LX, S, EX, SX) 3.8L V6
• 2023 Kia Telluride (LX, S, EX, SX, X-Line, X-Pro) 3.8L V6

Frequently Asked Questions

Does this fit the ON Telluride?
Yes, this is a direct fit for the 2020-2023 Kia Telluride equipped with the Lambda II 3.8L GDI engine.

Do these spark plugs come pre-gapped for the 3.8L V6?
Yes, the iridium plugs arrive pre-gapped to factory specifications, though verifying gap with a feeler gauge prior to torquing is recommended.

The Kia Utility Standard

When hauling full passenger loads or towing up to the 5,000-lb chassis limit, consistent spark energy is critical to avoid high-load misfires. This direct-replacement ignition kit ensures clean, reliable flame kernel development to preserve the full rated torque curve of your Telluride under maximum load.