How replace radiator on vauxhall vectra 1.8 petrol?

To replace the radiator on a Vauxhall Vectra 1.8 petrol, first ensure the engine is cool and then disconnect the negative battery terminal. Drain the coolant by removing the drain plug at the bottom of the radiator. Next, detach the hoses connected to the radiator, remove any mounting bolts or clips, and lift the old radiator out. Install the new radiator by reversing the process: secure it in place, reconnect the hoses, refill the coolant, and reconnect the battery.