Brand new and genuine BMW part.  NOX Nitrous Oxide Sensor - part number  11787587129 -  please check compatibility before ordering.  Suitable for many BMW models including  E90 E91 E92 E93 E60 E61 N53.This part was purchased by ourselves from the local BMW dealer for a repair at a cost of around £400 - it was not required and has not been used.  Brand new in the packaging - advertised at a huge saving.Price includes VAT