[C320-list] holding tank vent hose issues

[Ward, Nicholas]

Doing perhaps the worst job I can find this winter. changing head hoses.  very old and stinky on my boat. The holding tank has a hose going up to a thru-hull vent.  theres a plastic cap on that outside the boat.  I cannot find a replacment for that anywhere.  Any ideas? people have suggested websites but I cannot find the product on those sites. 
 
Nick Ward
(still unamed) #1