NGK - Iridium 94201 Spark Plug - B58/S55/S58 Engines

NGK Iridium SILZKGR8B8S spark plug, also known as the "94201" plug, for stock and tuned B58 engines. Required with Stage 2 and above packages on B58/S55/S58, Works great for those running high boost or for those running full E85 systems.

• Fine wire Iridium center electrode
• Platinum pad at the ground electrode for even wear in DIS ignition systems
• Engineered for specific vehicle applications
• Iridium tip is six (6) times harder than platinum
• Gap: Factory preset at 0.030". We recommend closing the gap to 0.018"-0,022" for those equipped with aftermarket turbos. 
• Replaces BMW Part Number 12120040551
  

Note: Beware of counterfeit NGK plugs being sold on Amazon & eBay for ridiculously cheap which can have quality control issues and/or degrade performance. We only sell Genuine NGK plugs.

Priced individually, recommend replacement every 30K. Six required for B58/S55/S58.

Vehicles Supported
BMW G87 M2
BMW F87 M2, including Competition
BMW G8X M3/M4, including Competition
BMW F8X M3/M4, including Competition
BMW F97/F98 X3M/X4M, including Competition
Toyota A90 Supra