I have been looking for years to replace the rubber flaps covering the cockpit transom drains. I think Post used these during the 70's and 80's. I finally found it here: http://www.mcmaster.com/nav/enter.asp?partnum=8143K142&pagenum=3447 The 12x12" piece works perfectly to make both of them. Part # 8143K14. The white color is actually offwhite and matches the gelcoat well. Hope this helps anyone looking.
Don't both with this. After a few weeks in the sun the rubber yellowed heavily. Doesn't match anymore.
White rubber will always yellow. Have you tried fender cleaner? Whatever you use it will be a forever job though. Do you have a contrasting color on your Post that you could go with like brown or black?
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