HELLA Air Mass Sensor (8ET 358 095-471) Fits: Opel, Chevrolet

This HELLA part matches Original Equipment (OE) quality specifications which means that it is at least as good if not better than the original part the manufacturer supplied the car with.

The mass air flow sensor is used to determine the intake air flow. It com-prises of a pipe-shaped housing with flow rectifier, sensor protection anda sensor module screwed onto the outside. It is installed in the intake pipebetween the air filter housing and the intake manifold.
There are two temperature-dependent metal film resistors attached to aglass membrane arranged in the air flow. The first resistor (RT) is a tempe-rature sensor and measures the air temperature. The second resistor (RS)is used to record the air throughput. Depending on the amount of air inta-ke, the resistor RS cools down to a greater or lesser extent. In order tocompensate the constant temperature difference between resistors RTand RS again, the flow through the resistor RS has to be controlled dyna-mically by the electronics. This heat flow serves as a parameter for therespective quantity of air intake by the engine. This measured value isrequired by the engine management control unit to calculate the amountof fuel required.