Volkswagen Workshop Service and Repair Manuals

Heater Hose: Diagrams
With Air Conditioning

1

-

Rear heater core

2

-

Coolant return hose
(from rear heater core to coolant pipe)

3

-

Coolant supply hose
(from coolant pipe to rear heater core)

4

-

Coolant pipe

5

-

Coolant return hose
(from coolant pipe to auxiliary heater valve -N172-)

6

-

Coolant supply hose
(from T piece to coolant pipe)

7

-

Coolant supply hose
(from T piece to T piece) 

8

-

T piece

9

-

Coolant supply hose
(from T piece to T piece)

10

-

T piece

11

-

Coolant return hose
(from T piece to coolant cut-off valve)

12

-

Coolant cut-off valve

13

-

Coolant pump -V50- (for after-run)

14

-

Coolant return hose
from coolant cut-off valve to engine)

15

-

Coolant supply hose
(from engine to coolant pump -V50-)

16

-

Coolant supply hose
(from engine to T piece)

17

-

Engine

18

-

Coolant return hose
(from auxiliary heater valve -N172- to engine)

19

-

Auxiliary heater valve -N172- (for rear heater)

20

-

Coolant return hose
(from T piece to front heater core)