Karavan boat trailer parts diagram
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That black rubber plug deteriorates due to UV, heat, and expansion/contraction and they have a limited lifespan. There is a rubber plug about the shape and size of a quarter that closes the hole and maintains watertight integrity (OK- not perfect but it does a pretty good job) The metal dust cap has hole in the center that is about 1 1/8 inches in size. This info may help many trailer owners regardless of brand, but if you have a Karavan trailer, I have extra good news. Please do us a favor by clicking on, then spending a minute visiting our advertisers. Thanks for visiting the Bayliner Owners Club!! If you join, you can choose to either contribute and not see any advertising, or you can choose not to contribute, and you will see the same advertising you are seeing right now. This funding comes from member donations, or through your clicking on advertisements. The Bayliner Owners Club and its Decades of stored boating information is funded by you, the people that visit here.
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No matter what size or model of Bayliner Boat that you have or are contemplating, we have members here who have that same model and would enjoy discussing it in a friendly, welcoming environment.
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