This is the 400, 450, 500 Rear Drive Shaft that connects the Engine to the Rear Diff. Approx. 6 1/4" long.Splined Ends Measure; 19mm O.D and 34.5mm O.D.
14MM is the O.D. of the Threaded End of the Tie Rod and threads of the Tie Rod End by the Castle Nut.This fits most 2015ish and Up models, early models used the 12mm size.