[Compatible with]The Oxygen Sensor Set Compatible with for 2007 2008 2009 2010 for Mini Cooper 1.6L L4 DOHC; 2009 2010 for Mini Cooper 1.6L L4 SOHC. [Part Number]Upstream Oxygen Sensor: 234-5135, 2345135; Downstream Oxygen Sensor: 234-4488, 2344488 [Feature]O2 Oxygen Sensors are An Important Component of Fuel and Emission Systems,Can Measure Unburned Oxygen In The Exhaust, Effectively Detecting The Oxygen Content in The Gas and Sending It to The Engine Computer, Optimize Fuel Economy. [Easy Installation]Based On Data, 100% Fit. Upstream is 6 Pin and Downstream is 4 Pin.Plug And Play, Direct Installation Without Modification, Time-Saving And Labor-Saving. Material: ABS colour: black Package Contents: 2 x Oxygen Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.