I do have the (almost $100) fuel pump/filter HOSE KIT on order with Needswings. It's all 4 hoses that connect to the filter as well as the hose from the gas tank to the pump. Yes, the fuel-line from the gas tank goes to the pump FIRST, then to the filter. Makes sense, right? Looking at the hairline cracks in those 15-year-old hoses I thought, what if one of them splits or cracks sufficient to leak when I remove the filter?... best to have a new set on hand and just replace them anyway. MercedesSource did a video about the safety aspect of checking any Mercedes you buy for the condition of these hoses.