The Kubota W21CS05881 is a genuine OEM oil seal designed for various Kubota machinery, including L-Series tractors (L3560, L3901, L4060, L4701, L4760, L5060, L5240, L5740, L6060), RTV-X utility vehicles (RTV-X1100, RTV-X1120, RTV-X1140), and ZD-Series zero-turn mowers (ZD1011, ZD1021, ZD1211, ZD1511). This precision-engineered seal helps prevent leaks and maintain optimal performance of critical components. It features an inner diameter of 21 mm, an outer diameter of 35 mm, and a height of 7 mm.