NGK 94201 Spark Plug for BMW B58 engines

These NGK 94201 Laser Iridium replacement plugs are specifically designed for the BMW B58 engine. Suggested for all factory and tuned applications, including those running E85, WMI, and/or larger upgraded turbochargers. We suggest setting the gap down to 0.028" for factory turbos or 0.022" for aftermarket turbos using a BMS gapping tool. Beware of counterfeit NGK plugs being sold for $5-10 each on eBay and Amazon. They do not offer the same performance, lifespan, and knock resistance. NGK plugs from BMS are guaranteed authentic. Features & Benefits Often specified as original equipment, NGK 94201 Laser Iridium spark plugs are the best combination of performance and longevity. 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 Product Details Part Number: 94201 Drive Size: 14MM Double Hex Gap - Factory Preset: 0.030", we suggest closing gap to .022" for tuned applications.