HEAVY DUTY SUN SHELL FOR 4L60E, 700 GM TRANSMISSIONS

This is the heavy duty sun (reaction) drive shell for the 4L60E / 700R4 GM automatic transmissions.  It is treated (hardened), forged of thicker material than the stock OE shell, and is one-piece (not welded) construction.  The spline section is much stronger to prevent breakage common to these OE parts.  This HD shell is a must for high performance and heavy duty applications, but is a smart investment for all transmission rebuilds.  Includes the special washer for adjusting endplay.