Is on order for the drivers side upstream. Jag has been runnin a lil rough and burning more gas and having a bad smell from exhaust. Today it became worse i got the restricted performance and the car was sluggish in gear like it didn't want to go. Then I got a transmission fault and it wouldn't change gears. I pulled over and turned off the ignition...started it back up and restricted performance is gone shifts fine just still have a lol rough running. Ill be glad when that Bosch o2 sensor is here!!!!!