11 78 1 433 940 : Oxygen sensor for BMW Series 3 E46

The oxygen sensor is a key engine management component responsible for measuring the oxygen content of exhaust gases in order to optimise the air-fuel mixture. On the BMW Series 3 E46, replacement is necessary during restoration or routine maintenance, particularly in cases of excessive fuel consumption or increased emissions. This new part is compatible with the BMW Series 3 E46 and allows the engine to operate in accordance with original specifications. It is therefore a reliable choice for preserving the authenticity and value of this classic vehicle.