This gear shift lever ball is the spherical knob that sits on top of the gearbox shift lever in the host tractor. It provides the hand-interface point for the operator to select and engage gears through the shift linkage. The ball is manufactured by AGCO to match the original lever shaft diameter and thread, ensuring it seats correctly without wobble or binding. A worn or loose ball can cause imprecise shift feel and missed gear engagement. On installation, confirm the ball threads fully onto the lever and tighten to the original torque specification.