Rigorous quality inspection and testing has been undertaken to ensures conformance to Part Number performance criteria. Easy to install, and high sensitivity, fast response,stable performance. Establish and test quality control standards. The NOx sensor is used to check the nitrogen oxide content of the exhaust to optimize exhaust and fuel economy. Stable characteristics and high reliability. Strong durability and high practicability. Easy to install, simple and fast. Perfect match to the car. Replaceable part number:68146138AB,68146138AC,68146138AD,68249511AA, 68249511AB,68249511,0281006343 Applicable models:for Colour:Black Material:ABS Package Contents: 1 x Nox Sensor 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.