Ignition Coil and Iridium Spark Plugs for BMW 3 Series (2012-2018) 2.0L

Direct-Fit Ignition Service Kit for 2012-2018 BMW 3 Series

Primary Function: Restores factory ignition timing, eliminates high-boost spark blowout, and resolves erratic idle by replacing worn ignition coils and degraded plugs with high-dielectric coil assemblies and fine-wire iridium spark plugs.

The Stock 3 Series Ignition Breakdown

Factory coil packs on the turbocharged 2.0L N20 and N26 engines endure extreme thermal cycles trapped beneath the engine acoustic cover. Over time, heat soak degrades the internal epoxy resin and insulation around the primary and secondary copper windings. This leads to internal resistance spikes, micro-arcing, and high-rpm misfires under boost. Compounding this, standard spark plugs erode at the ground electrode, expanding the plug gap and forcing the coil to pull excessive current, triggering driveability faults and CEL codes such as P0300 through P0304.

The Engineering Solution

This comprehensive kit provides 4 matched coil-on-plug assemblies engineered with high-conductivity copper windings and heat-resistant elastomer boots that prevent dielectric breakdown. Paired with 4 laser-welded iridium spark plugs, the setup ensures a concentrated, stable spark kernel even under peak boost pressures. The fine-wire iridium center electrode resists thermal ablation and carbon fouling, maintaining precise gap tolerance and smooth combustion across the entire RPM range.

Technical Specifications

Compatibility

• 2012-2018 BMW 3 Series (320i, 320i xDrive, 328i, 328i xDrive) 2.0L Turbo 4-Cylinder

The BMW Precision Standard

Engineered to meet tight European OBD-II communication and resistance tolerances, this direct-fit ignition kit ensures zero misfire-induced limp mode activations, instantaneous cold starts, and seamless power delivery.