[Main Function] The Oxygen Sensor helps the engine control system adjust the fuel ratio by monitoring and providing feedback on the oxygen content in the exhaust. This helps improve combustion efficiency and fuel economy, ensuring the normal operation and performance output of the engine. Stable performance, high reliability. Made of high quality material, for use. Part Number: Downstream: 250-241104 250241104 Upstream: 250-54102 25054102 Color: As Shown Material: Plastic + metal name:Oxygen Sensor Fitment: for : 2012 2014-2019 Note 2014-2017 Q70 2014 M35h 2012-2013 1.6L 3.5L Package Contents: 2 x Oxygen Sensor (Upstream + Downstream) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.