Hose Identification

[Boxer Metal]

1980 732i

There are 2 white plastic lines fallowing the coolant overflow line on the left side of the engine bay, going into the firewall. Can anyone tell me what they are for?
Thanks in advance.

[kojo96]

Sounds like you have a euro car and those Two "White plastic lines" are for the headlight aiming system- do you have a smaller drop down panel on the lower dash panel under the steering wheel? When open, it'll have a knob/dial there to adjust the headlights, up/down depending on the load inside the car.

Cool feature to have, especially if it's working.

If not then an image would really help-

[8991XJ]

That is probably correct. It isn't working. Those are fluid filled pipes and the hydraulic pressure is used to adjust the headlight aim for heavier in the rear loads, dropping the beam down to avoid pointing at oncoming traffic.

http://www.bmwe23.de/leuchtweitenregulierung.htm

[Boxer Metal]

Thank you both. It is a Euro model and it looks like someone has already removed the servos at the back pf the headlights.

[Jay535is]

Another NorCal E23 guy.
Welcome.