Components of NOx system

BMW equipped with N43/N53 series engines contains NOx system. There are two basic parts of NOx system:

  1. NOx catalytic converter;
  2. NOx sensor.


NOx catalytic converter

  • Manufacturer: BMW AG (no alternatives available)*
  • Price: 2000 .. 2500 EUR (depending on engine)
  • Lifetime: around 100.000 .. 150.000 km

*if OEM NOx sensor is replaced with NOXEM, full functionality of engine is restored regardless of the condition of NOx catalytic converter


NOx sensor

  • Manufacturer: Continental (alternative: NOXEM)
  • Price: 450 .. 500 EUR
  • Average lifetime: 30.000 .. 50.000 km


Related entries:

NOx sensors. OEM codes