078 906 601 E : Secondary air valve for Volkswagen Passat B4

This secondary air valve is a new replacement part suitable for the Volkswagen Passat B4. It operates in the secondary air injection circuit, an essential component for the proper functioning of the engine emission control system. In the context of restoring or servicing a classic vehicle, replacing this valve allows the engine to return to original conforming operation. A reliable part to preserve the mechanical integrity of your Passat B4.