Ignition Coil and Iridium Spark Plugs for Hyundai Sonata (2015-2019) 1.6L

Direct-Replacement Ignition Coil and Iridium Spark Plug Kit for 2015-2019 Hyundai Sonata

What it Does: This complete ignition service kit replaces degraded factory coil packs and worn plugs to eliminate high-boost misfires, restore lost combustion efficiency, and stabilize idle quality.

The Stock Sonata LF Ignition Breakdown

The turbocharged 1.6L Gamma T-GDI engine produces high cylinder pressures and elevated thermal loads that accelerate the degradation of stock ignition components. Over time, OEM coil epoxy insulation breaks down from continuous heat cycling, resulting in secondary voltage leakage, carbon tracking, and intermittent hesitation under acceleration. Simultaneously, standard spark plug electrodes erode, widening the gap and straining the ignition coils, which triggers cylinder misfires and poor fuel economy.

The Engineering Solution

This direct-fit kit features high-grade internal copper windings sealed in premium thermal epoxy to prevent dielectric breakdown under heavy boost. Paired with fine-wire iridium spark plugs, the system provides high spark energy, exceptional thermal shock resistance, and precise flame kernel propagation. Direct-fit blade terminals and factory-matched electrical connectors ensure complete plug-and-play installation with OE-level signal integrity.

Technical Specifications

Compatibility

• 2015 Hyundai Sonata: Eco Trim 1.6L L4 Turbo Gas
• 2016 Hyundai Sonata: Eco Trim 1.6L L4 Turbo Gas
• 2017 Hyundai Sonata: Eco Trim 1.6L L4 Turbo Gas
• 2018 Hyundai Sonata: Eco Trim 1.6L L4 Turbo Gas
• 2019 Hyundai Sonata: Eco Trim 1.6L L4 Turbo Gas

The Hyundai Daily Reliability Standard

Built to withstand the rigorous thermal demands of direct-injected forced induction, this ignition tune-up kit delivers consistent cold-start ignition and steady combustion efficiency without triggering check engine lights.