The Zetor 55115935 is a genuine OEM valve insert designed for a wide range of Zetor agricultural tractors. This critical engine component ensures proper valve seating and sealing, contributing to efficient engine operation and longevity. With an outer diameter of 40mm, an inner diameter of 25mm, and a height of 10mm, this precision-engineered part meets Zetor's stringent quality standards. It is compatible with numerous Zetor models including the UR I, UR III, and Forterra series.