In this picture you can see the two parts the body of the Fuel Pump consists off. The part in the middle of the picture is the housing of the high pressure gear pump. The housing of the low pressure fuel filter is integrated with this part of the body. On the left lower corner you can see the other half of the body, housing the centrifugal low pressure (boost stage) of the pump. In the picture to the right you can see the damaged teeth of a high pressure stage gear due to the cavitation phenomenon.