A direct replacement for GM P/N 88893900, this shaft is a plug-in fit with no additional machining required. Designed with generous radius curvature to eliminate stress risers. Manufactured from 300M steel, the toughest alloy in the 4340 steel family. MW hardening processes further increases load capacity and durability of this shaft. Built with turbo applications in mind. For 1997 - 2013, C5 & C6. (sold each)