The Zetor 40113516 steering wheel shaft is a genuine OEM replacement part designed for a wide range of Zetor tractors, including models such as the 4011, 4511, 5511, 5611, 5711, 6711, 6911, 4911, 5911, 6011, 7011, 7211, 7711, 5011, 6211, 6745, 6945, 7045, 7245, and 7745. This critical component ensures precise steering control and is manufactured to Zetor's original specifications for durability and reliable performance.