mild heat range for a wide variety of conditions and fuels
OEM plug for N54 engines
This is a OEM Bosch spark plug standard on the N54 twin-turbo engine from 2007-2010. This is the "High Power" spark plug with a copper core and Nickel-yttrium coating for wear resistance. As the original spark plug for the N54, it meets BMW requirements for performance, efficiency, and a 45,000 mile replacement interval.
Just like ignition coils, spark plugs are key to the performance and efficiency of your BMW engine. A bad plug(s) will harm performance and fuel mileage and affect drivability and engine smoothness. Unburnt fuel in the exhaust will shorten the lifespan of oxygen sensors and catalytic converters. Spark plugs wear out over a long time, making losses in performance less obvious. Since its introduction, BMW has recommended a 45,000 mile replacement interval for N54 spark plugs.
Video: Replacing Spark Plugs on N54 E9X 335 (Courtesy of SeanS54):
