Mercedes-Benz C204 R231 Oxygen Sensor A0085422918 0258017281 Durable Replacement Part

This model of oxygen sensor is designed specifically for the Mercedes-Benz C204 (2011-2014, with 1.8T/2.0T engines) and R231 (2012-2016, with 3.0T/4.7T engines), precisely matching the original exhaust system. Its core function is to monitor the oxygen content in the exhaust in real time and feed back to the ECU to adjust the air-fuel ratio, ensuring efficient combustion and reduced emissions. OEM part number is A0085422918, also compatible with 0258017281 for easy cross-check with the original vehicle parts. Replacement difficulty is medium; use a dedicated socket tool to avoid thread damage; clean the interface and apply anti-blocking agent before installation to extend service life. This product is a durable replacement with a high-temperature resistant ceramic core, offering about 20% better aging resistance than the original part, suitable for high-use or regions with strict emission requirements.