This genuine Mercedes-Benz A4432610051 spacer ring is an original equipment manufacturer (OEM) part designed for MB-Trac and Unimog agricultural and utility vehicles. It features an inner diameter of 45mm, an outer diameter of 60mm, and a thickness of 1mm, ensuring precise fitment and reliable performance in transmission or coupling assemblies. Compatible with various MB-Trac models including 700, 800, 900, 1000, 1100, 1300, 1500, 1600, 1800, and Unimog models such as 406, 407, 417, 421, 424, 425, 427, 435, 437.