What are the years and models of VW that share our little 4 popper? Particularly the 1.7 d-jet. The word "Porsche" seems to put a glaze over some of these new parts guys, especially when you say "72"!!

not super sure, but up to about 1981 the aircooled 1.7 was available in the vanagon.
I had one...talk about underpowered....

Rich

This is from the Tech Notebook page on my 914 Classics website.

If the part number starts with 111, 113, 311, 411 etc. it's a VW part.
Porsche parts IIRC all start with 9.

411 & 412 Models (type 4) along with late model type 1 Vans (111 p/n)

1968-1972 (411)1679 cc Flat-4

1972–July 1974 (412) 1795 cc Flat-4

Unless it is a VW Bus related part, suggesting a VW 411 or 412 is going to receive an even worse response. You need to dump your present vendor and move on to a real parts supplier…