On the NC there is the air fuel ratio wide band sensor in front of the Cat and a heated O2 sensor after the Cat. In the parts catalogs these are distinguished as upstream and downstream. The 2 sensors are very different in operation and cost. The Bosch part # you provided is for the downstream HO2 sensor. The OBD II code is for the Upstream sensor. The correct Bosch part # is 15784 and is about $450. This is the top end and should be used if peak performance is demanded. Denso also has an AFR sensor for about $125 Denso 2349088. When you buy an OEM fit, a percentage of the cost is the OEM plug. You can save some money by buying a sensor without a plug and then you are required to Crimped or solder the leads to the old plug. Many high quality sensor leads are stainless steel wire and can only be crimped as standard solder will not bond to SS. I would recommend spending the extra money for the preinstalled OEM plug.

Bosch vs Denso AFR Sensor – Why the huge cost difference? It’s all about sensitivity and reaction time. The Bosch is much more sensitive and reacts much faster than the less expensive Denso ( You can google for you tests). The price difference is in the purity of the materials and quality control. The the average driver the Denso will be fine. For the performance driver that wants max TQ/HP out of every shift, go with the Bosch.