Hose to top of fuel filter. Snaps onto the small nipple at the top on the side.This hose has a bleed screw on the end for purging accumulated water at the bottom of the fuel filter.
This hose supersedes old part 642 070 20 38, which has been discontinued by Mercedes.
NOTE: This hose is only used in conjunction with the new BlueTec engine fuel filters with the non-removable 5-pin moisture sensor.
