Ignition Coil and Iridium Spark Plugs for BMW X4 (2015-2018) 2.0L

Direct-Fit Ignition Coil and Iridium Spark Plug Service Kit for 2015-2018 BMW X4

What it Does: Restores factory ignition energy, resolves high-boost misfires, and stabilizes idle by replacing aged coil packs and worn spark plugs in direct-injected 2.0L engines.

The Stock N20 Ignition Breakdown

Factory ignition coils on the turbocharged N20 engine face severe thermal degradation inside the tight F26 engine bay. Over continuous heat cycles, stock epoxy insulation micro-cracks, causing high-voltage dielectric breakdown and internal resistance spikes. Combined with direct-injection electrode erosion on standard plugs, this leads to spark blowout under peak boost, cylinder misfires (DME fault codes 140010/140001), rough cold starts, and reduced fuel efficiency.

The Engineering Solution

This comprehensive ignition service kit features four upgraded coil-on-plug assemblies paired with four fine-wire iridium spark plugs. The coils utilize high-grade internal copper windings and reinforced thermoplastic housings to deliver consistent, high-voltage secondary output under high cylinder pressures. The matching iridium plugs feature laser-welded fine-wire center electrodes and thermal-shock-resistant ceramic insulators, ensuring lower required firing voltage, precise flame kernel propagation, and extended service life.

Technical Specifications

Compatibility

• 2015 BMW X4 xDrive28i (2.0L L4 Turbo - N20B20)
• 2016 BMW X4 xDrive28i (2.0L L4 Turbo - N20B20)
• 2017 BMW X4 xDrive28i (2.0L L4 Turbo - N20B20)
• 2018 BMW X4 xDrive28i (2.0L L4 Turbo - N20B20)

The BMW Precision Standard

Engineered to meet rigorous European diagnostic standards, this direct-replacement kit delivers clean combustion cycles to prevent shadow codes, protect catalytic converters, and maintain true German drivability without triggering check engine lights.