The Kubota RD10171380 O-Ring is a genuine OEM sealing component designed for a wide range of Kubota engines and machinery. This high-quality O-ring provides a critical seal, preventing leaks and maintaining optimal system performance. With an inner diameter of 40 mm and a thickness of 2.5 mm, it ensures a precise fit for specified applications, including various B, L, and M series tractors, utility vehicles, and excavators. Trust genuine Kubota parts for durability and exact fitment.