VW Bus 1972: Brake Lines sizes?

[alexbeatle]

Hey, folks.
Is anybody familiar with the '72 VW bus brake lines?
Looking to confirm whether the lines are 3/16" and what style\size of fittings they have?
Going to work on replacing my master cylinder over the next few days...
Thanks in advance.

[Abscate]

The right search term here is

“Brake line flare fitting”

With one such thread here

https://www.thesamba.com/vw/forum/viewtopic.php?t=674869&highlight=brake+flare+fittings

Short version is these cars use metric 10x1 bubble flare fittings , available at NAPA

Once some people add better info here , I’ll pm the mods go link this into the FAQ thread above
_________________
.ssS!

[alexbeatle]

Thanks that is actually very helpful!

[alexbeatle]

Took down the master cylinder today. Confirmed M10-1 bubble flare lines.

[alexbeatle]

I'm trying to install a non-native brake booster and came down to an issue of needing adapters.
Anybody can suggest a good shop for these?

My booster uses M12-1 nuts and is meant for 1/4" inverted double flare brake lines.
The bus (as discovered) uses 3/16" bubble flare brake lines with M10-1 nuts.
To join the two I'd need to find reducers male 1/4" to female 3/16" with appropriate flares.