Levelling Box Shaft 1 UNC 15-Spline Adjustable Linkage - Sparex Part S.4288The Sparex S. 4288 Levelling Box Shaft is a precision engineered linkage component used to adjust lift arm height and maintain accurate implement alignment. Designed for heavy duty agricultural applications, it ensures smooth operation and stable load control during fieldwork and equipment lifting. Featuring a 1 UNC threaded end and 15 splines for secure engagement, this shaft measures 375mm in overall length with a 185mm thread section. Built from