Sierra International 18-71337 Molded Hose Sierra Molded Hose Meets or exceeds the original equipment quality Sierra part number: 18-71337 Interchangeable with the following: Evinrude/Johnson 312781, Mallory 9-44052, Mercruiser 32-33189, 32-33189A1, OMC 312781 Length: 12 3/4" or 323.9mm; I.D.: 1 3/4" or 44.5mm