Where is the coolant drain plug on a 2003 Dakota R/T with 5.9 / 360?

Here is a picture and shows the location as

Your radiator drain plug is located on the bottom of the radiator, driver's side engine side. It simply unscrews but does NOT come all the way out.

https://www.justanswer.com/dodge/1jxa4-2000-dakota-4-7-4wheel-drive-w-tow-package-radiator.html

and this is what it looks like

https://shop.advanceautoparts.com/find/dodge-dakota-radiator-drain-plug

And some generic videos on flushing coolant

https://www.google.com/search?q=1993+dodge+dakota+flush+coolant

..

This is a post on the Dakota forums:
My 2001 Durango and 2002 Dakota they use the same radiator. You'll have the same setup. I have recent and intimate knowledge of draining them. Crawl under the left front of the truck and look up at the bottom of the radiator. At the bottom of the driver side radiator tank (facing toward the fender) is a 3/4" long flat handled plug. Twist your hand (with a pair of pliers) up there from the back side of the bumper fascia. Grip it and give it a 180* counterclockwise twist. It is now opened and draining out the little nipple sticking straight down from the bottom of the side tank. You can stick a 5/16" (or 3/8") hose onto the nipple to drain it into a bottle or pan without making a mess.
radiator coolant drain plug location Dakota Durango Forum

Look in the owners manual

Coolant maybe on a label on top of radiator support

The back of any coolant bottle lists the applications

For the most of radiators it is in the lowest part (bottom) of radiator it is like a little nut... hope this helps you

it is toward the bottom of the radiator below the fan blades they look like wing nuts

The textbook method is to remove the drain plug on the bottom of the radiator.

Most drain plug is make of inexpensive nylon/plastic and it may fall apart while you turn it.

The professional method is to loosen the lower radiator clamp and drop to lower radiator hose.

Drain the coolant onto a large drain pan and recycle the coolant

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I just did a FREE write up on air purge from coolant system and how to detect initial state of blown head gasket at the Fixya tip selection.

Click HERE

or follow link below.

http://www.fixya.com/cars/r3582329-how_to_inspectdiagnose_and_repair_minor_

It should be there. Just look hard under the radiator back-side wall, or directly under the radiator.

The textbook method is to remove the drain plug on the bottom of the radiator.

Most drain plug is make of inexpensive nylon/plastic and it may fall apart while you turn it.

The professional method is to loosen the lower radiator clamp and drop to lower radiator hose.

Drain the coolant onto a large drain pan and recycle the coolant

===

I just did a FREE write up on air purge from coolant system and how to detect initial state of blown head gasket at the Fixya tip selection.

Click HERE

or follow link below.

http://www.fixya.com/cars/r3582329-how_to_inspectdiagnose_and_repair_minor_

,m ake sure the radiator cap is off,oh or the radiator is clogged, remove lower radiator hose]and flush with garden hose

Sorry so late.The drain hose is under the truck.If you stand in front of the truck it will be on the passenger side behind the front wheel and about a foot to the right.You will have to get under the truck and look up,it will be a black rubber hose.If you dont have an air compressor,use a coat hanger and snake it through the hose.