Where is the water pump on 2001 Chrysler 300m?

The water pump on a 2001 Chrysler 300M is located on the front of the engine, driven by the serpentine belt. To be more precise, it's at the front of the engine block, typically near the bottom of the timing cover. You'll need to look at the front of the engine, below the crankshaft pulley and somewhat below the alternator, to find it. Access will likely require removing some belts and possibly other components to get a clear view and access for replacement.