This urea pump diaphragm is a replacement component designed for use in diesel exhaust fluid (DEF) delivery systems.It is compatible with various urea doser pumps and air-assisted AdBlue pump models, including those used in DAF and Emitec applications.The part is engineered to meet specifications for proper function in heavy-duty engine environments and corresponds to the following part numbers: 201149061, 5273338, 1409391, 1705244, 4931694, and 5273339.