I have just replaced my exhaust (the lot, heat exchangers etc..) thanks to parts from marc on here.

Whilst doing this I noticed my inlet manifold pre heater tube has holes in it. Does anyone know what part no this would be?
The old one has 070 120 701 on it. (least thats what it looks like to me) Tried this number but not recognised on any sites? Van has a Solex 34 Pict-4 carb.
Anyone know where I could get a second hand one---minus holes.

many thanks.