From what I know, the only thing out there that is the 'same' as G12 is Peak Global Lifetime/Final Charge as both are a non-2eh formula (same BASF additive). 2-eh is the organics used in Dex-Cool that was blamed for the gasket failures in GM trucks... Now, people DO run Dex-cool in Audi's, but usually with a flush first, not mixing. I dont have any data that says it good or bad, but to be safe, I dont do it.. or run Dex-Cool at all.
Cant help with the hose, but it looks the same to me.
'96 A6Q - 180+K miles