A4 Mk1
| Diagram of coolant hose connections |
| 1 - | Coolant hose (bottom) |
| q | From radiator to engine |
| 2 - | Cylinder head/cylinder block |
| 3 - | Turbocharger (right-side) |
| 4 - | Continued coolant circulation pump -V51- |
| q | Removing and installing → Chapter |
| 5 - | Heat exchanger |
| q | If renewed, refill system with fresh coolant |
| 6 - | Coolant hose |
| q | To heat exchanger |
| 7 - | Turbocharger (left-side) |
| 8 - | Coolant pipe (rear) |
| q | Removing and installing → Chapter |
| 9 - | Filler cap |
| q | Checking pressure relief valve in filler cap → Anchor |
| 10 - | Expansion tank |
| 11 - | Oil cooler |
| q | If renewed, refill system with fresh coolant |
| 12 - | Radiator |
| q | Removing and installing → Chapter |
| q | If renewed, refill system with fresh coolant |
| 13 - | Coolant pump |
| q | Removing and installing → Chapter |
| 14 - | Thermostat |
| q | Removing and installing → Chapter |
| q | Checking → Chapter |
