1. Open the hood of your Opel Corsa 130i.
2. Look at the front of the vehicle. At the back of the engine. The coolant housing is just above the bottom front left of the cylinder head/inlet manifold area which houses the thermostat at its outlet into the top hose.
3. To be 100% sure it`s there follow the top radiator hose to where it joins at thermostat housing.
