The Kubota RB20866340 is a genuine OEM thrust collar designed for a wide range of Kubota engines including D722, D902, D1005, D1105, Z482, and Z602. This essential component ensures proper spacing and reduces friction in critical engine assemblies. It is compatible with numerous Kubota compact tractors (BX, B series), zero-turn mowers (ZD, ZG series), utility vehicles (RTV series), and excavators (K, KX, U series), providing reliable performance and maintaining original equipment specifications.