BenzWorld Senior Member
Date registered: Oct 2006
Vehicle: 1965 220SE sedan (finnie) with 450SE conversion, 1964 220SE coupe project, 1966 300SE coupe
Location: Brisbane Australia
Mentioned: 2 Post(s)
Quoted: 33 Post(s)
That is the hose that is part of the wiper-washer system. There should be a plastic 'bag' that hangs off two metal ears on the battery cradle bracket, with a cap on it that has 2 hose attachments. One goes to the washer jets, and one goes into the cab to a bellows mechanism under the dash. You pull on a handle which moves a lever to squash the bellows, which squirts water. It also activates an electric switch that should make the wipers give a wipe or two.
The only drains from the cowl area are 2 large drooping metal tubes with rubber ball looking things on them, either side of the centreline of the engine.
I hope my explanation works, it is much easier if I had a photo! Google 'w111 engine bay' and look at images, and I am sure you will see what I mean. The colour of the hose gives it away.