1958 Evinrude fuel tank petcock bung size

Been There

Cadet
Joined
Mar 9, 2019
Messages
25
Anyone here remember or know what the thread size is on the 1952-1964 Evinrude/Johnson 3 HP outboard fuel outlet bung? I'm guessing it may be 3/8" NPT.

Thanks to all that can give the size.

The reason I need an answer is the fuel tank leaks at the petcock, and there is a new one on ebay from a marine dealer up north for a very hefty price of $90.00, which it out of my class.
 

lindy46

Captain
Joined
Nov 27, 2008
Messages
3,886
If the threads leak, wrap a little Teflon tape around the threads.
 

kbait

Commander
Joined
Nov 13, 2007
Messages
2,471
Use fuel resistant Teflon tape.. mine came in yellow spool..
 

F_R

Supreme Mariner
Joined
Jul 7, 2006
Messages
28,226
Clean it up and a couple of drops of Loctite blue Screw-Lock will work miracles.
 
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