Polo Mk4
| Engine ATD identification letter |
| 1 - | Cooling fluid container |
| 2 - | Intake manifold |
| 3 - | Engine block/head |
| 4 - | Heat exchanger for heating |
| 5 - | Cooling fluid tube |
| 6 - | Cooling fluid upper hose |
| 7 - | Radiator |
| 8 - | Cooling fluid lower hose |
| 9 - | Oil radiator |
| 10 - | Water pump/ thermostat valve |
