I reckon its part no M1025340 female/female for 30mm long, or M10202540 for 25mm long, in their Flexible isolator catelogue (Industiral section)
and
M6M6 multicushion studs ( M6 x1.0 x 21mm)
currently on special $9 each from Blackwoods normally $20
where as the flexliner ones are 20mm dia, so I decided with flexliner, which were local pickup and I didn;t have to pay for international freight from McMaster - which can be quite a bit $$$$$ these days
74 525 auto
76 525 - 4 speed, LPG and holley carb- restoring
77 528i- 4 speed manual
77 528i -4 speed manual getting rusty
79 528i auto - a SA car?
80 528i auto - ready to relicense
81 528i +3.5ltr - auto - restoring
86 525e 5 speed manual- dd
I cut an end of the threads to 10mm, to fit into the AFM housing, and left the other end long - 18mm -this may need to be cut too. The old ones are 10mm long at each end.
I needed 2 x M6 washers to get the clearance between the AFM and the supporting bracket. I may use M8 washers which are bigger diametre than then the M6 ones.
The AFM feels alot more connected and rigid now.
This is a maintenance upgrade well worth it I think.
Now to do my other 2.
74 525 auto
76 525 - 4 speed, LPG and holley carb- restoring
77 528i- 4 speed manual
77 528i -4 speed manual getting rusty
79 528i auto - a SA car?
80 528i auto - ready to relicense
81 528i +3.5ltr - auto - restoring
86 525e 5 speed manual- dd