Part muber help for check valves

[220bhp]

Can anyone help with the part numbers for the one way check valve that is under the back seat for the diff lock on a 3b coupe. And also the one way valve in the engine compartment.Both are on the vacumme lines.

Many Thanks

[Thecrispynoodle]

Don't know about diff lock as don't have one but plenty into on the PCV valve under the inlet manifold here http://forums.quattroworld.com/s4s6/msgs/22506.phtml is that the one you mean?

[UrS4boy]

Can anyone help with the part numbers for the one way check valve that is under the back seat for the diff lock on a 3b coupe. And also the one way valve in the engine compartment.Both are on the vacumme lines.
Many Thanks

Diff Lock 101: http://forums.quattroworld.com/s4s6/msgs/170940.phtml

[mcandmar]

I believe the diff lock valve is 046905291A, and the engine compartment one 035103245A.

The one in the engine compartment only has a plastic disk inside and can easily be opened up and cleaned if needed.

[220bhp]

Many Thanks