Hydraulic pump shaft. 9-3/16″ overall length, one end is 3/4″ O.D. 6 splines and one end is 3/4″ O.D. with 3/16″ x 3/4″ keyway. (use WK-9, 3/16 inch x 3/4 inch for replacement key)
Associated components inch end A flex coupler: L601-14 (3/4 inch bore drive flanges both sides), end B hub: 1921.