On my 18' Parker there is a fuel vent right under the rubrail where you fill it up. It is a plastic peice that has a cap that screws onto it to prevent water from getting back up into it and into the fuel. The plastic cover broke off and I NEED to get one back on there ASAP.
Oh yea-West Marine (m.b/p.l), Q&m marine, and San Diego Marine Exchange do not have them or know where I can get one without replacing the whole vent. Sundance is lagging ass on looking into it as well.