BYD F3/F3R Rear Oxygen Sensor 25324173, Delphi System Precise Matching

This replacement uses OEM-level zirconia sensor element and high-temperature stainless steel housing; Delphi system protocol fully matches; signal output accuracy and lifespan meet OEM standards; no worry about false positives or premature failure. OEM 25324173 and 25333340 are interchangeable; fits Mitsubishi and BYD F3, F3R. Monitors exhaust oxygen content and feeds ECU to adjust air–fuel ratio; install replacement with medium difficulty; remove exhaust pipe segment and use specialized socket; perform cold-weather work to avoid burns; experienced technician about 30 minutes.