So I noticed that I was dripping fuel around the rear of my E30, located the hose and the leak. It's a hose which goes from the fuel tank line to fuel filter. The part number is BMW part# 16 12 1 180 398 but when I have gone looking to purchase one I can't find it anywhere, only thing I can find is that it has been superseded by BMW part# 16 12 1 180 399. The part it has been superseded by will not work for my application as it is a J shape where the part I need is U shaped. Does anyone know where I would go to find one or could suggest any alternative ideas. Thanks