Ignition Coil and Iridium Spark Plugs for BMW X5 (2017-2020) 4.4L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2017-2020 BMW X5 4.4L

Primary Function: Restores precise secondary ignition voltage and uniform combustion across all eight cylinders to resolve boost-induced misfires and rough engine idle.

The Stock X5 Hot-Vee Thermal Breakdown

BMW's twin-turbocharged 4.4L V8 places the turbochargers inside the cylinder valley, subjecting surrounding ignition components to continuous radiant heat soak. Over time, OEM coil insulation breaks down, leading to internal dielectric failure, secondary voltage leakage, and coil boot hardening. Combined with eroded spark plug gaps under elevated cylinder pressures, this breakdown triggers check engine lights, DME cylinder cutouts, and hesitation under load.

The Engineering Solution

This comprehensive service kit upgrades your ignition system with eight heavy-duty coil-on-plug assemblies and eight matched iridium spark plugs. The coils utilize high-grade internal copper windings and reinforced thermoplastic housings engineered to withstand thermal cycling without internal arcing. Paired with laser-welded fine-wire iridium center electrodes, this package provides exceptional ignitability, reduced quenching, and reliable spark energy across high-boost combustion events.

Technical Specifications

Compatibility

• 2017-2018 BMW X5 xDrive50i 4.4L V8 (F15 Chassis)
• 2019-2020 BMW X5 xDrive50i 4.4L V8 (G05 Chassis)
• 2020 BMW X5 M50i 4.4L V8 (G05 Chassis)

The BMW Precision Standard

Calibrated to match factory DME dwell-time and primary resistance parameters, delivering exact OEM communication without intermittent misfire codes or false knock threshold triggers.