How do you change radiator kia optima 2004?

To change the radiator in a 2004 Kia Optima, first ensure the engine is cool and disconnect the negative battery terminal. Drain the coolant by removing the drain plug at the bottom of the radiator. Disconnect the upper and lower radiator hoses, as well as any electrical connections or mounting brackets. Finally, remove the old radiator and install the new one by reversing the steps, ensuring all connections are secure and refilling the coolant.