Re: Trying to source or identify Fuel tank bosses on My 1939 WM20
I measure the outer diameter as 1.00". These taper down to 0.80" diameter. The thickness of the lip is 0.10" The distance between centres of the two tap bosses is 4.50". Height of the boss is difficult to measure, given that the tank is curved where they're welded. However, I estimate the height of the boss to be 0.50" at it's greatest. Tap thread is 3/8" BSPF.