Ignition Coil and Iridium Spark Plugs for Infiniti Q50 (2016-2019) 2.0L

Direct-Fit Ignition Overhaul Kit for 2016-2019 Infiniti Q50

Primary Function: Restores precise secondary ignition voltage and combustion efficiency across all four cylinders to eliminate misfires and rough idling under boost.

The Stock Q50 Thermal Degradation Problem

The turbocharged 2.0L M274 engine operates under elevated cylinder pressures and tight engine bay thermal constraints. Over time, OEM ignition coil epoxy resin degrades due to sustained high-temperature cycling, resulting in micro-arcing, weakened dielectric insulation, and premature secondary winding breakdown. Combined with standard spark plug electrode erosion, this leads to spark blowout under heavy load, erratic idle harmonics, and diagnostic trouble codes (DTCs) like P0300-P0304.

The Engineering Solution

This comprehensive ignition kit features four heavy-duty coil-on-plug assemblies engineered with high-grade internal copper windings and reinforced thermal epoxy to prevent dielectric breakdown under boost. Matched with four fine-wire iridium spark plugs, this kit provides a higher melting point, superior thermal conductivity, and reduced quenching effects, ensuring a stable, high-energy spark kernel across the entire operating RPM range.

Technical Specifications

Compatibility

• 2016 Infiniti Q50 2.0t (Base, Premium) - 2.0L L4 Turbo (V37 / M274)
• 2017 Infiniti Q50 2.0t (Base, Premium) - 2.0L L4 Turbo (V37 / M274)
• 2018 Infiniti Q50 2.0t (Pure, Luxe) - 2.0L L4 Turbo (V37 / M274)
• 2019 Infiniti Q50 2.0t (Pure, Luxe) - 2.0L L4 Turbo (V37 / M274)

The Infiniti Precision Standard

Engineered to meet tight factory tolerances, this direct-fit ignition system restores factory throttle response, stabilizes closed-loop fuel trims, and prevents check engine lights without requiring ECU recalibration.