五菱之光6376氧传感器5WY3173A，西门子伟世通系统

This oxygen sensor is designed for Wuling Zigzag 1.0L/1.1L models (2008-2015) with Siemens-VW gasoline injection system, for monitoring exhaust oxygen content and feeding ECU to adjust air-fuel ratio for efficient combustion and compliant emissions. OEM number 5WY3173A; directly replace OEM part; no extra programming needed. Use a dedicated socket to avoid thread damage; installation torque about 45 N·m. This is a four-wire wideband O2 sensor compatible with original harness; B2B buyers should note front vs rear O2 location; this model is for the front O2 sensor.