Sierra International 18-2387 Marine Lower Unit Drain/Fill Screw Sierra Fuel Pump Meets or exceeds the original equipment quality Sierra part number: 18-7274 Interchangeable with the following: GLM 77070, Mallory 9-35417, Mercruiser 8624A1, 71646, 78485, 86246, 86246T, OMC 509409 Fit specific, check part numbers to ensure proper fit