Seal Ring, engine oil level sensor Sealing ring for the engine oil level sensor, preventing oil leaks at the mounting point Topran "115 439" - Not availableBMW - 3 (E46, WB), 5 (E39, WB), 1 (E81, E87), 7 (E65, WB), 6; AUDI - A3, A4; ALPINA - B5, B6