every hose that fit is not suitable for the application.
mike
PS try putting fuel injection hose on your brake reservoir 

> From: stuartmacm@gmail.com
> To: mkriley1@HOTMAIL.COM; vanagon@GERRY.VANAGON.COM
> Subject: RE: 7mm braided coolant hose, overflow to pressure
> Date: Fri, 24 Jul 2015 10:43:45 -0700
> 
> You may not be able to find the OEM hose, but a large vacuum hose or
> standard, more flexible, low pressure fuel hose should work.  Check your
> FLAPS, they will sell various hose sizes by the foot.  As long as it fits
> snugly, this hose doesn't need a clamp because it is not under any pressure,
> you just don't want it falling off from vibration.  
> 
> Even a piece of vinyl tubing from Lowes or HD should work fine.
> 
> Stuart
> 
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> mike riley
> Sent: Friday, July 24, 2015 10:00 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: 7mm braided coolant hose, overflow to pressure
> 
> thanks,
> they did not have the right stuff.
> the oem hose has a black covering with a red thread in it to differentiate
> it from fuel hose which gets hard and stiff with coolant use and from brake
> line hose which has a blue liner. I still have the oem hose which is getting
> short from trimming the ends every decade. Still soft and supple after all
> these years and works without a hose clamp.
> mike
> 
> From: jondvo@gmail.com
> Subject: Re: 7mm braided coolant hose, overflow to pressure
> Date: Fri, 24 Jul 2015 10:39:26 -0600
> To: mkriley1@hotmail.com
> 
> Notice GAS has changed. Try Belmetric, they have the proper size but don't
> see red color
> 
> Sent from a rotary phone
> On Jul 24, 2015, at 10:23 AM, mike riley <mkriley1@hotmail.com> wrote:
> 
> 
> 
> 
> no luck there they don't seem to have any hoses
> 
> > Subject: Re: 7mm braided coolant hose, overflow to pressure
> > From: jondvo@gmail.com
> > Date: Fri, 24 Jul 2015 10:03:39 -0600
> > CC: vanagon@GERRY.VANAGON.COM
> > To: mkriley1@HOTMAIL.COM
> > 
> > I believe German auto supply may have that
> > 
> > Sent from a rotary phone
> > 
> > > On Jul 24, 2015, at 8:36 AM, mike riley <mkriley1@HOTMAIL.COM> wrote:
> > > 
> > > anybody know who carries the oem braided cooling line with the red
> thread on the cover. Just ordered the part from one of our suppliers and got
> 5/16 fuel injection hose. TOO STIFF and WRONG SIZE  need to use a hose clamp
> on it unlike the OEM stuff
>                                           
>                                           =
>