Fuel Pump Low Pressure Electric | Sierra 18-7331 Low Pressure Electric Fuel Pump | 18-7331 Low pressure fuel pump used on many Volvo Penta & OMC marine engines. Low pressure Fits OMC GM 7.4L & 8.2L Mark V engines from 1992-1994 Fits Volvo Penta GM 7.4L & 8.2L HU-WT Mark V engines from 1992-1999 Replaces OMC 3850810, 3857985, 3858714 Replaces Volvo Penta 3850810, 3857985, 3858714 Replaces Mallory 9-35431