The Sonnax Powerglide Stator Support Shaft 28154S, made of high quality heat-treated alloy steel, provides added strength to give solid support to the torque converter stator. The roller burnish finish in the seal bore improves sealing for better pressure. The spline and knurl areas have been selectively induction hardened for wear resistance; a more pronounced knurl enables more positive press fit. Specially designed for severe duty race applications. Bored to accept bushing 35007 for Turbo Hydramatic applications.