The number 28384347 refers to a Delphi High-Pressure Common Rail Fuel Pump primarily used in 2.0 HDi and TDCi diesel engines. T8CC, T7CE, T7CF, T8CA, T8CD, T9CA, DW10FD, DW10FC, DW10FD, DW10F. Peugeot: 308 (2014–2021), 508 (2010–2023), 5008 (2009+), Expert (2016+), and Boxer (2.0 BlueHDi).