This part is listed by BMW as BMW part number 64211394295 (64-21-1-394-295) and is described as URO Heater Inlet Hose (Cylinder Head to Water Valve) for E36 318i, 318is, 318ti (1996-1999).
BMW Fitments:
3 Series
E36 (92-99) > 318i M44
E36 (92-99) > 318ic M44
E36 (92-99) > 318is M44
3 Series
E36/5 (95-99) > 318ti M44