Take an old one to Lowes and match it up in the plumbing section. Cost
about $1.00 each.

--
Tony
my boats and cars at http://t.thomas.home.mchsi.com
"M.E." wrote in message
...
I am looking for new drain plugs (3 of them) they all appear the same and
look to be 3/8" diameter thread and are a 7/16" head... they are for a '77
mercruiser 140HP 181 engine. I am looking for atleast a part number for
them or something simular or if they are something easy to get somewhere
other then my local marine shop that wants $14ea for them and wont give me
a part number

Thanks in advance.

Mike