Black vacuum hard line for all VW Bus and Vanagon brake booster

There is a long black plastic line that runs from the front to the rear of your VW Bus or Vanagon.  The length of the pipe on the Vanagon should be 3450mm.  For the Bus, measure your old one and buy accordingly.  So for the Vanagon I would recommend buying 12 feet.  The price is per foot so if you need a different length for some reason, you can buy it that way.  The outside diameter is 12mm.  At the front there is another preformed hose at the booster, then it goes does and meets this hose.  This hose goes under the van from the front to the back, all the way to the engine bay.  Then there is another preformed hose at the engine.  There are rubber seals that go on each end of this pipe that you may also need.