Not getting fuel tanks from Fuel Systems upgrade, bug?

[cheesinator3000]

I just got this upgrade and I didn't get any new tanks.

[Gargamel]

Well, I don't have my game open to check, but if you read the description, it says stuff about fuel flow, and you did get the fuel lines part.  I can't even tell what the other part is you got, but if you click on it, it will give you a description.    There might not be any tanks in that tech level....

[Superfluous J]

Yeah you're missing a lot of tanks from there. Lots of the Rockomax tanks and a couple from MH go into there.

What mods are you using? If none, I'd suggest exiting the game from the menus (don't alt-f4, actually exit all the way out the "normal" way) and then - if you're using Steam - validate your local files, then restart. If you're using mods, I'd remove all the ones that may modify parts.