Engine oil ring 102x4.5x4.4 for C330. Part number: 50107050, P1033-000-0 Engine oil ring (de-oiling) 102x4.5x4.4 for URSUS C-330 tractor. The oil ring is used to scrape excess oil from the cylinder wall during piston movement. The oil returns through the slots in the ring and piston to the engine block. Part number: 50107050, P1033-000-0 Parameters: Dimensions: 102x4.5x4.4