Polo Mk4
| Connection scheme for cooling fluid hoses |
| 1 - | Radiator |
| 2 - | Oil radiator |
| 3 - | Cooling fluid thermostat |
| 4 - | Water pump |
| 5 - | Engine block/head |
| 6 - | Cooling fluid container |
| 7 - | Cooling fluid upper tube |
| 8 - | Linking tap |
| q | On head |
| 9 - | Hear exchanger for heating |
| 10 - | Linking tap |
| q | For heat exchanger |
| 11 - | Cooling fluid tube |
| 12 - | Quick coupling |
