奔驰氧传感器A0045420718 / 0258006750 / 0258006749，多兼容替换，品质稳定，省油减排。

This Mercedes oxygen sensor (A0045420718 / 0258006750 / 0258006749) is perfectly compatible with 2005-2013 Mercedes-Benz C-Class (W204), E-Class (W211/W212), S-Class (W221), and M-Class (W164) models, covering 2.0T, 3.0L, 3.5L, and 5.5L engines. Core function is real-time monitoring of exhaust oxygen content and feeding the ECU to adjust the air-fuel ratio, improving fuel economy and reducing emissions; long-term use reduces carbon buildup and catalyst clogging risk. OEM numbers A0045420718, 0258006750, and 0258006749 facilitate cross-checking. Replacement difficulty moderate; use a dedicated socket wrench, cool the engine before installation and avoid thread damage. If the vehicle reports P0130 or P0135 fault codes, prioritize inspecting this sensor. As a versatile replacement, this item uses a high-temperature ceramic core and is suitable for bulk purchase for repair shops or fleet maintenance.