Hello all,
I recently developed a coolant leak on my A4 B6 1.8t quattro. I first assumed it was the thermostat so I replaced it. Upon replacing it it seems I still had the leak. I tore everything out of the way in the engine bay again only to find this small hose has deteriorated. It goes from above the oil filter housing into the coolant system? I cant find the hose anywhere online, maybe I'm not searching the correct words. Can anyone help me?