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Howdy, Weeping fuel return lines. Known as yellow stripe fuel return line (vw, Mercedes, etc...) 3.5mm inside diameter, pushes onto the hose barbs on the tees Fuel return line thread I wanted to make things easier and save the tees. I simply sliced the old lines. Removed the old lines and...

Howdy, Go through the linked topics in the MEP-8xx series Replacement parts thread. It probably is the fuel return lines along the top of the engine.