SAIC Roewe Oxygen Sensor 258017506 Original Factory Standard Manufacturing Process

This replacement uses OEM-standard manufacturing; core sensor element uses high-temperature ceramic material, with double-layer laser-welded housing; durability about 30% higher than ordinary aftermarket parts; effectively withstands high-temperature exhaust conditions. OEM number 258017506; fits SAIC Roewe RX5, i5, i6 and other models 1.5T and 2.0T. Function: monitor exhaust oxygen content in real time and feedback to ECU to adjust air-fuel ratio, ensuring engine efficiency and emissions standards. Installation/replacement difficulty is medium; remove old part with a special socket, avoid thread damage; operate with cold engine and apply anti-seize agent; experienced technician can complete in about 20 minutes.