BOLT HOLES: 5/16-18 UNC RH THRD, PLEASE ONLY USE THE BOLTS WE PROVIDE AND DO NOT USE POWER TOOLS WHEN INSTALLING (THIS CAN STRIP OUT THE INSERTS). This seat does not include the mounting bracket 6003AB. Length: 19 Inch —- Width:18 Inch —- Height: 18 Inch. Replaces John Deere no(s): VG12160, AM126149.