Connect your Bosch LSU 4.9 wideband oxygen sensor to the Options Port Pigtail (sold seperately) for a complete plug and play solution, no soldering required! The harness is XXXmm long so it can be fed from the ECU, through the firewall to the engine bay where the wiedband can be connected.
A Bosch LSU4.9 wideband sensor with part number "17025" or similar is recommended. The sensors are available in a range of cable lengths so it is reccomended to measure up the required length in your engine bay prior to purchasing one. Please be careful of counterfeit sensors from some of the common sale or auction sites and only buy from reputable stores.