1 - heater fan
2 – bolt
3 - fan output stage
4 - cabin air temperature sensor
5 - heater temperature sensor
6 - vacuum hose, black
7 - air duct sealing gaskets
8 - fan pipe
9 - Bowden rod for fresh air damper control
10 - Bowden row
11 - Fan cover
12 - heating channel insert
13 – clamp
14 – bolt
15 - heater body
16 - heater housing cover
17 - heating channel insert
18 - Bowden rods for air flow control.
- footwells: A - green, C - green
- windshield defrosting: A - red, C - red
- ventilation: A - blue, C - blue
19 - damper drive
20 - conductor board
21 - decorative overlay
22 - rotary air flow regulator
23 - rotary temperature controller
(The original source of the article is on the website: «BMWMAN.ru»)