Packaging and installation: 2PCS*Upstream Oxygen Sensor & 2PCS*Downstream Oxygen Sensor; 4 pins and 4 wires, direct replacement and installation, plug and play, easy to operate.
High efficiency: By monitoring oxygen content in exhaust gas and transmitting it to engine system, it helps adjust fuel ratio, improve combustion efficiency and ensure normal operation of engine.
High quality: Made of high temperature and corrosion resistant stainless steel, long service life, can provide long-term stability and excellent performance for your vehicle.