Post Cat Nox Sensor for Mercedes 390mm

A Post Cat NOx (Nitrogen Oxide) sensor for a Mercedes with a length of 390mm is a component of the vehicle's emissions control system. It is designed to measure the level of NOx emissions in the exhaust gases that are released from the engine after passing through the catalytic converter.

The catalytic converter is responsible for reducing the levels of harmful pollutants in the exhaust gases, including NOx. The Post Cat NOx sensor monitors the effectiveness of the catalytic converter in reducing these emissions and sends signals to the vehicle's Engine Control Module (ECM) to adjust the fuel-air mixture to maintain optimal emissions levels.

The 390mm length of this sensor refers to its physical size and is specific to the Mercedes model for which it is designed. It is located downstream of the catalytic converter, close to the exhaust pipe, where it can accurately measure the NOx levels in the exhaust gases.

This sensor plays a crucial role in maintaining the vehicle's emissions compliance and performance. It is important to replace it when it begins to malfunction to prevent excessive emissions and avoid potential damage to the engine and other emissions control components. Regular maintenance and replacement of the Post Cat NOx sensor can help ensure the longevity and efficiency of a Mercedes vehicle's emissions control system.