Leon Mk1
| Coolant hose schematic diagram |
| 1 - | Cylinder block/cylinder head |
| 2 - | Radiator |
| q | For exhaust gas recirculation. |
| 3 - | Shut-off valve for auxiliary heater |
| 4 - | Connection |
| 5 - | Continued coolant circulation pump -V51- |
| 6 - | Heater unit heat exchanger |
| 7 - | Additional heat exchanger |
| q | Only vehicles with optional equipment. |
| 8 - | Expansion tank |
| 9 - | Return hose with inside throttle |
| 10 - | Coolant pipe |
| 11 - | Upper coolant hose |
| 12 - | Radiator |
| 13 - | Oil cooler |
| 14 - | Lower coolant hose |
| 15 - | Coolant pump and thermostat |
