Known as: pipe m w0 129 582 / pipe m ea0 098 793 m w0 129 582 m w0 250 000
Small vacuum tube to connect stacket or branch vacuum elbow to vacuum hose 4.5
Referred to affectionately as a decel valve, this factory installed device lets the idle down slowly to more effectively limit the unburned gas exiting the tail pipe and keep the engine from stalling. mounts on the right side of the firewall just above the pressure sensor and just behind the battery and three vacuum lines attach to it.