Ignition Coil and Iridium Spark Plugs for Hyundai Elantra (2015-2020) 2.0L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2015-2020 Hyundai Elantra

What it Does: Restores factory combustion efficiency, stabilizes cylinder firing, and eliminates ignition misfires across the entire rev range on 2.0L engines.

The Stock Elantra Ignition Breakdown

Factory ignition coils on the 2.0L Nu engine are prone to premature dielectric breakdown caused by sustained underhood thermal cycling. Over time, internal epoxy potting degrades, leading to high-voltage micro-arcing, weakened secondary winding output, and intermittent P0300-P0304 DTC fault codes. Paired with degraded OEM plug electrodes that suffer from thermal gap widening, this results in incomplete combustion, sluggish throttle response, reduced fuel economy, and severe rough idling under load.

The Engineering Solution

This comprehensive ignition service kit replaces degraded components with four heavy-duty coil-on-plug assemblies and four matched fine-wire iridium spark plugs. The coils feature high-conductivity internal copper primary and secondary windings insulated in high-dielectric resin to resist thermal breakdown and current leakage. Direct-fit blade terminals ensure low contact resistance, while the laser-welded iridium electrode tips provide superior spark concentration, reduced arc voltage requirements, and high thermal resistance against flame erosion.

Technical Specifications

Compatibility

• 2015-2016 Hyundai Elantra 2.0L L4 (MD / UD Chassis)
• 2017-2020 Hyundai Elantra 2.0L L4 (AD Chassis)

The Hyundai Commuter Standard

Engineered to meet or exceed OEM electrical specifications, this direct-replacement kit provides consistent cold starts, dependable daily drivability, and zero-CEL reliability for daily commuter applications.