OEM NGK spark plug, same part used to service your BMW
(1 step colder for N54, stock replacement for N55)
Spark plugs are an often overlooked maintenance item. If your BMW has developed a misfire, studders, or feels down on power it could be due to worn out spark plugs.
Please note Tightening torque for this spark plug is 23 ± 3 Nm, a special 14mm, 12 point spark plug socket is required for removal and installation of this plug.
Spark Plug Failure Symptoms:
- Misfiring
- Check Engine Light
- Hesitation
- Loss of Power
- Poor Fuel Economy