This step box mounts to the chassis and provides the structural platform for the operator to step onto when entering or exiting the tractor cab. It is a formed metal assembly that integrates with the cab mounting points and the chassis rail. Over time, the step box can develop cracks at the weld joints or corrosion at the mounting flanges, leading to a loose or unstable step surface. This component is manufactured by AGCO to match the original geometry of the chassis interface, so the bolt holes align with the existing frame brackets without modification. On installation, inspect the mounting area for any previous damage and apply anti-seize to the fasteners.