This rear axle shaft fits Mack differential applications and measures 46-7/16 in. in body length. It carries 43 splines with a 2.190 in. spline outer diameter, and the shaft end has a T8-43/64 in. hole for hub attachment. It is built as a replacement for the corresponding Mack shaft.Interchanges:Mack 21404109238214372513368468KH414P268KH414P9Features46-7/16 in. body length43 splines2.190 in. spline outer diameterT8-43/64 in. end holeTech SpecsBody Length: 46-7/16 in.Splines: 43Spline O.D.: 2.190 in.End Hole: T8-43/64 in.