American Axle and Manufacturing part number 40038571. Technical specifications, 2.299" Ground Hub (barrel diameter), 1.74803 spline diameter 34 spline, 9.550" C/l to end. This slip uses the AAM u-joint number 74081485. This slip yoke fits the transfer case rear output of 4x4 2500 Ram trucks and some 1500 4x4 mega cab trucks with either the 271 or 273 transfer case. Please see our other auctions for the rear seal (38249) and bushing (45379). Shipping is $12.00 in the continental U.S.