On a 2003 Ram 1500 with a 5.7 Hemi, the radiator drain plug is located at the bottom of the radiator on the driver's side. It typically resembles a small petcock or a valve that can be turned to allow coolant to drain. To access it, you may need to lift the vehicle or use ramps for better clearance. Always ensure the engine is cool before attempting to drain the coolant.
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