Amazon.com: Guniang Set of 4 Air Fuel Ratio Oxygen O2 sensor for BMW 328xi 2007-2008 3.0L BMW 328i xDrive 2009-2013 3.0L Upstream + Downstream : Automotive
Amazon.com: A-Premium O2 Oxygen Sensor Replacement for BMW 323i 525i 525xi 530i 530xi N52 Engine Downstream Cylinder 1-3 : Automotive
Amazon.com: Automotive-leader 234-5136 Upstream Oxygen O2 Sensor 5-Wire Wideband Sensor for BMW X5 550i 650i 750Li 750i 760Li 4.8L, Mercedes-Benz Cooper Phantom 11787535269 0258017028 1178 7535 269 : Automotive