New GM/ACDELCO roller pilot bearing.  Roller bearing increase life, and reduced wear on input shaft.  Fits the following:

98-02 LS1 V8 Camaro w/ T56 transmission
98-02 LS1 V8 Firebird/Trans Am w/ T56 transmission
97-04 LS1/LS6 Corvette w/ T56 transmission
04-06 LS1/LS2 GTO w/ T56 transmission