The manual doesn't show the complete picture with Fuel pump assembly maintenance. It doesn't show it has a low pressure cleanable tea bag filter. The high pressure side Is encapsulated in plastic but can still be back flushed. I don't know if the tea bag filter even has a separate part no. The dealer will probably say buy a whole fuel pump assembly. You can clearly see the crud that washed out. If not cleaned eventually it can block the high pressure filter and cause damage to the injectors.