Hello,

Could someone advise me of which fuel line is the supply and which is the return on a 1999 E300. The lines are located on the diver side near the brake master cylinder. There are two are plastic lines one is larger than the other.

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1982 300d Turbo Diesel (Sat in P/O's Garage for 10 years) Purrs Like a Kitten

1999 E300 Turbo Diesel

1998 SLK 230