I'm trying to establish my maximum towing rate for my '03 Ram but don't know which of the 2 options for rear ends that I have. They list either the 3.73 or the 4.10. How can I tell which I have?

Thanks in advance,

Jim.....

 

you gear ratio should be stamped on the diff/axle, or go to dodge, give them your vin and get a build sheet

 

Look inside your glovebox and see if the sticker is still there.