3.0 v6 engine - what does this part do? 06C133611

[A4B6Cab]

B6 Intake System Drive Unit With Rotary Valve 06C133611

Top front of engine, looks like 2 actuators working together. Am assuming something to do with vacuum?

Asking as one of the actuator arms has snapped so wondering what will be effected by this?

[Crasher]

It is the variable length inlet manifold flap control

[A4B6Cab]

Thanks Crasher, even though one part of it’s snapped it seems to be working correctly at present. I’ve looked and they’re about £340ish new ��

if it it stopped working, or only one side/actuator worked would I notice it straight away? Or could it damage the engine?

[Crasher]

I would disconnect it as it will make one bank act differently to the other.

[A4B6Cab]

Thanks again Crasher

sorry to ask, but in real layman’s term, what does it do?

[Crasher]

It alters the length of the path the intake air follows which affects the way the power is delivered, a tuned length inlet manifold.