Laser Iridium Spark Plug

The NGK 5992 is a Laser Iridium spark plug that serves as a direct OEM replacement for BMW factory servicing, specifically designed for the N54 and N55 engines. It is an ideal upgrade for tuned N54 and N55 BMWs that are running higher boost levels or experiencing increased power output, as well as for racing applications requiring improved knock resistance. These spark plugs feature a tighter gap and an exposed electrode, which work together to help reduce misfires, particularly under high load conditions. The 5992 model has a specified lifespan of 15,000–20,000 miles, which is shorter than comparable Bosch plugs. It is crucial to note that the spark plug gap must be manually set before installation; the suggested gap is 0.022". Technical specifications for the NGK 5992 include a 14mm thread size, requiring a 12-point socket for installation, and a recommended torque specification of 23 ± 3 Nm. The original part number is NGK 5992, and it is also known as NGK 95770. It is important to be aware that NGK has discontinued the 5992 part number, and users are advised to consider the NGK 97506 (2 steps colder) for high-power setups.