NTK Exhaust Gas Temperature (EGT) Sensor (94889) RTA9000-EE226: Fits Audi A4

This NTK Exhaust Gas Temperature (EGT) Sensor (94889) RTA9000-EE226 is an OEM-quality replacement part and is suitable for selected Audi A4 diesel vehicles.

EGT sensors monitor the temperature of the exhaust gas, ensuring that exhaust gas cleaning components achieve optimal conversion rates.

EGT sensors also serve as a temperature monitor for turbochargers, catalytic converters, diesel particle filters, and nitrogen oxide reduction systems. They are used to monitor the optimum operating point, to protect the relevant components from temperature overload, and to keep them in the desired temperature range for optimal conversion rates, thus making them an important component for the reduction of harmful emissions from vehicles.