Ignition Coil and Iridium Spark Plugs for Honda Accord (2017-2021) 2.0L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2017-2021 Honda Accord

Direct-Replacement Ignition Overhaul: Restores high-voltage spark consistency and combustion efficiency across all cylinders in Honda 2.0L powertrains.

The Stock Accord Coil Heat Degradation

Elevated underhood temperatures and high cylinder pressures in direct-injected Honda 2.0L engines accelerate the degradation of factory ignition coils and spark plug electrodes. Thermal cycling breaks down internal OEM epoxy insulation, causing micro-arcing and secondary winding breakdown. This dielectric fatigue leads to high-load spark blowout, random cylinder misfires, unburned hydrocarbons in the catalytic converter, and noticeable hesitation under acceleration.

The Engineering Solution

This replacement kit pairs four high-output coil-on-plug units with premium fine-wire iridium spark plugs. Built with heavy-duty primary and secondary internal copper windings, direct-fit blade terminals, and high-dielectric polymer housings, these coils resist voltage leakage and thermal breakdown. The iridium center electrodes require lower ionization voltage, stabilizing the flame kernel under cylinder pressure for crisper throttle response, smooth idle, and complete fuel atomization.

Technical Specifications

Compatibility

• 2017-2021 Honda Accord 2.0L 4-Cylinder (Gas / Turbo / Hybrid models requiring UF781 specification)

The Honda Performance Caliber

Engineered to satisfy exacting JDM tolerances, this ignition service kit sustains peak cylinder pressure and precise timing without triggering misfire fault codes, maintaining factory drivability and boost stability.