Delivering the ultimate protection against Chrysler 47/48RE shaft failure, this new Sonnax extreme duty output shaft (p/n 22173D-01) features a unique combination of innovation and quality. To guard against breakage, the 1.480″-dia. shaft is manufactured from high-strength alloy and features a significantly larger, 29-spline configuration that is based on the OE manual transmission spline. This shaft delivers 50% more strength than OE-size, aftermarket shafts and is ideal for use in 68RFE to 48RE conversions, where the transfer case input has 29 splines, or in older, 47RE applications when an appropriate 29-spline input gear is sourced separately