Size of breather hose for stock oil filler without the down tube.

[Brandon Sinclair]

I am getting rid of the nasty looking screw in aluminum oil filler/breather and going back to the more traditional looking stock filler-the one without the down tube.  Now the breather tube on this thing is much larger (whcih I want) then the one with the down tube and I have seen modification where people weld in AN fittings and use braided hose or even use some clear hose from the hardware store.  I want to go with the more traditional cloth braided hose like the original German hose but was wondering what size I needed and if someone can point me in the right direction to find it.  The regular cloth breather hose that I have in my stash is too small in diameter.  Thanks.

[Zach Gomulka]

There were two sizes, normal and massive!

[Bryan67]

You need 12mm hose.

[volksnut]

Brandon, I found this old 80's Bugpack unit (looks like a beehive) and works/looks pretty well....sometimes you have to be different
I was installing my CSP linkage here that's why there is none, oh and the air cleaners are gone now too so be nice....

[Jim Ratto]

I am getting rid of the nasty looking screw in aluminum oil filler/breather and going back to the more traditional looking stock filler-the one without the down tube.  Now the breather tube on this thing is much larger (whcih I want) then the one with the down tube and I have seen modification where people weld in AN fittings and use braided hose or even use some clear hose from the hardware store.  I want to go with the more traditional cloth braided hose like the original German hose but was wondering what size I needed and if someone can point me in the right direction to find it.  The regular cloth breather hose that I have in my stash is too small in diameter.  Thanks.

you might have the 1974 oil filler with the big outlet. I forget the diam of that hose, but it was not a "bulk" hose it was a formed breather hose VW # 113129651... think it was 15 or 17mm.