BMW M5/M6 O2 / Oxygen Sensor (PRE CAT) 11787836394

The O2 / Oxygen Sensor (Pre Cat) plays a critical role in the exhaust management system of your vehicle, installed before the catalytic converter. This sensor monitors the oxygen levels in the exhaust gases, providing critical feedback to the engine control unit (ECU) for optimal fuel mixture adjustments. Common issues such as poor fuel efficiency, increased emissions, or engine performance can indicate the need for replacement. Compatible with BMW M5 and M6 models from 2006 to 2010, this genuine OEM part features Bosch part number 7836394. If you experience engine warning lights or failed emissions tests, it may be time to replace the O2 sensor for precise emissions control and improved performance.