The air filter housing is located under the hood of the vehicle next to the engine block. As its name suggests it contains the vehicle's air filter. It is a crucial component in the vehicle's air intake system. For vehicles with right-hand drive (RHD) For vehicles with left-hand drive (LHD) The role of the air filter housing is essential to protect the air filter but it also has other functions. It provides filtered air to the engine by retaining impurities such as dust, insects, pollen and other particles to provide clean air. It regulates the flow of air entering the engine so that the quantity of air is sufficient and thus ensures good combustion with the fuel whatever the engine speed. And finally it collects fuel waste. CITROEN/PEUGEOT: 1427 H2, 1427.H2, 1427H2, 96 395 629 80, 9639562.