A4 Mk1
| Diagram of coolant hose connections |
| 1 - | Heat exchanger |
| q | If renewed, refill system with fresh coolant |
| 2 - | Coolant pipe (bottom) |
| q | Removing and installing → Chapter |
| 3 - | Heating for throttle valve housing |
| 4 - | Expansion tank |
| q | With filler cap |
| q | Checking pressure relief valve in filler cap → Anchor |
| 5 - | Oil cooler |
| 6 - | Intake manifold |
| 7 - | Coolant hose (bottom) |
| 8 - | Coolant hose (top) |
| q | Removing and installing → Chapter |
| 9 - | Radiator |
| q | Removing and installing → Chapter |
| q | If renewed, refill system with fresh coolant |
| 10 - | Coolant pipe (top) |
| 11 - | Coolant pump, thermostat |
| q | Removing and installing coolant pump → Chapter |
| q | Removing and installing thermostat → Chapter |
| q | Checking thermostat → Chapter |
| 12 - | Cylinder head/cylinder block |
| q | If renewed, refill system with fresh coolant |
| 13 - | Coolant pipe |
| 14 - | Connection |