1、OE Number: The referencing OE number of this nox sensor probe are 55500320, 55495341, 55487270, which is molded and designed depend on the original data. 2、Fitment: The nitrogen oxide nox sensor is a replacement for Vauxhall Insignia A 2009‑2017 with B20DTH 170HP diesel engines, please check before ordering. 3、Function: The nox sensor is used to check the nitrogen oxide content of the exhaust to optimize exhaust and fuel economy, which is practical and energy saving. 4、Practical: The nitrogen oxide sensor has high precision, fast response, high accuracy, made of metal material which is wear proof, anti aging and impact proof. 5、Easy to Install: Stringently manufactured to meet the original standard, good replacement for the old or broken one, improving the time efficiency. Item Type: Nox Sensor OE Number: 55500320, 55495341, 55487270 Material: Metal Fitment: Replacement for Vauxhall Insignia A 2009‑2017 with B20DTH 170HP diesel engines 1 x Nox Sensor