Golf Mk4
| Coolant hose schematic diagram |
| 1 - | Heater unit heat exchanger |
| 2 - | Non-return valve |
| 3 - | Continued coolant circulation pump -V51- |
| 4 - | ATF cooler |
| q | Only on vehicles with automatic gearbox |
| 5 - | Top coolant hose |
| 6 - | Radiator |
| 7 - | Bottom coolant hose |
| 8 - | Thermostat housing |
| 9 - | Lower coolant pipe |
| 10 - | Oil cooler |
| 11 - | Coolant pump |
| 12 - | Cylinder block |
| 13 - | Cylinder head |
| 14 - | Expansion tank |
| 15 - | Upper coolant pipe |
| 16 - | Throttle valve module -J338- |
