.035
I believe it's - 1,8,4,3,6,5,7,2
It does not have a drain plug. You have to remove the pan to drain.
Just like any other spark plug you just need to find the size of the plug and buy it.
The radiator drain plug on a 2001 Dodge Ram 3500 pickup truck with a 5.9 liter diesel engine is on the bottom inside corner of the radiator. It is on the driver's side.
.040 inch
.040 inch
.040 inch
.050 inch
.050 inch
.040 inch
It is on the back of the transfer case, takes a 10mm Allen wrench to remove.