I am looking for a pair of Weber 4.5 auxiliary venturi tubes, Weber part number 70503.450 anyone got a set? Seems my supplier thought he had a set but did not. Also looking for a screen part number 99217.326
I have many hard to find parts to trade

there is a weber store in california that i used when i still had the weber on my sport.
go to www.piercemanifolds.com, pn.# 1-408-842-6667. the carb ducati used also was used on a maserati. it was a long time ago that i got stuff from them so i don't know if they still can get things but it's worth a try. blaster

If U need gasket/rebuilt set, i have, for sale.... I have Mikunis, so i dont need such anymore.

I tried to order from Pierce,Mike no longer has the 4.5 auxiliary venturi,only 4.0.... He did send me along a pair of f44 emulsion tubes and a rebuild kit I am aware Maserati's use them,was once upon a time a Maserati technician, seems the Ferrari,Porsche and VW guys have grabbed up most of the 4.5 tubes. My thought was since a lot of guys here trash their Webers for other setups maybe some one has a pair around they dont have a use for. If I cant find a set I guess I'll have to give the 4.0 a go or make my own outta the 3.5 I have Oh I also have a lot of extra 906 parts to trade, new crank,engine cases,cobra exhaust and many more.....

It has recently come to my attention that a 4.5 auxliary venturi tubes from a 40 dcnf my meet my requirements Anyone care to part with a pair?

Did you find out if the 4.5's from the 40 dcnf also fit fine on this or are the same part? Or if the 4.0 would be a good choice too?

Hey Slacker
I finally found the tall 4.5 aux venturis at fast road cars in the UK
I had to ask for the Ferrari part number to get them.
They are only intermitantly available./
I did not find the 4.o short aux vent to be of much use in my case
The 4.5's resolved my low speed issues in combination with the modded ET