Oxygen sensor for Mini Cooper 2007-2010 R55 R56 R57 1.6 L Upstream Front 5-Wire Lambda O2 Sensor part 11787590713 What it does - Monitors oxygen concentration in exhaust gas and provides accurate feedback to the engine management system to keep the engine running optimally - Upstream/front position enables fast response and precise air fuel ratio control Key features and benefits - Robust construction for long service life and reliable performance - 5-wire design supports precise signal and heater circuit for quicker warm-up and stable readings - Strigent testing and quality control measures ensure consistent, accurate measurements Compatibility - Direct replacement for 2007-2010 Mini Cooper R55 R56 R57 1.6 L Upstream Front sensor - Part number 11787590713 Use scenarios - Replacing a failing upstream O2 sensor to restore fuel economy and engine response - Addressing diagnostic codes related to lean or rich conditions by restoring proper O2 sensing - Routine maintenance to help ensure efficient catalytic converter operation and emissions compliance