Levelling Box Assembly Adjustable 570 - 710 MM Knuckle Ø16 MM - Sparex Part S.74538The Sparex S. 74538 Levelling Box Assembly is a precision engineered component designed to provide smooth and accurate lift arm adjustment on agricultural tractors. It ensures balanced implement positioning, stable operation, and reliable performance across demanding field conditions. This assembly features a knuckle with a 16mm bore and a fork hole of 19mm, offering a robust and flexible design. With an adjustable length range from 570mm to 710mm and