Cavi Mike wrote:That's not aluminum, that's stainless steel. You'd know that if you were the one that actually made it.
I'm trying to figure out why they cut the lid off. Personally I like to be able to check and fill my overflow bottle.
If you have those skills you can just use cheap stock too. Mine are made out of 4" aluminum IC piping with a weld bung cap and AN bungs for lines.
By the way if anyone needs them I can make overflow bottles to any dimension, spec and volume. I can do it out of stainless but it would be very expensive to do it right. The guy in the pics above did not do it right and his welds will be rusting in no time.
Aluminum however is quite easy.