Item Part Number: 11787558073, 11787558055, 11787545075, 11787545074 Color: As Shown Material: ABS + Metal Compatible Part Numbers: 11787558073, 2345138, 24333, 11787540166, 11787540167, 11787557223, 11787558081, 11787558087, 11787589138 11787558055, 2345139, 24322, 0035427218, 11787557756 11787545074, 2344876, 25676, 11787526262, 11787545074, 11787545244, 11787569968, 11787614322 11787545075, 2344892, 25613, 11787539137, 11787544655, 11787545075, 11787545243 Package Included: 4 PCS Oxygen Sensors - 11787558055 (5-wire oxygen sensor): Upstream Front, Cylinder 1-3, before catalytic converter (1X) - 11787558073 (5-wire oxygen sensor): Upstream Rear, Cylinders 4-6, before catalytic converter (1X) - 11787545074 (4-wire oxygen sensor): Downstream Front, Cylinders 1-3, after catalytic converter (1X) - 11787545075 (4-wire oxygen sensor): Downstream Rear, Cylinders 4-6, after catalytic converter (1X) Fits For: - 128i: 20082013 E82, E88 - 328i: 20072011 E90, E91, E92, E93; 2012 E91, E92, E93; 2013 E92, E93 - 328i xDrive: 20092011 E90, E91, E92; 2012 E91, E92; 2013 E92 - 328xi: 20072008 E90, E91, E92 - X3: 20072008 E83 3.0si; 20092010 E83 xDrive30i - X5: 20072008 3.0si; 20092010 3.0 xDrive30i Package Contents: 4 x Oxygen Sensor Note: The package includes only the items listed above. Other products are not included. Light reflection and differences in display settings may cause slight variations in color between the product image and the actual item. Measurement may vary by +/- 1-3 cm.