313893 OMC O-RING

OEM Johnson/Evinrude/OMC o-ring (part 313893) is a pressure seal with dimensions 64.8 x 2.5 millimeters (inner diameter x width). Part is used in sea-water cooling circuits and stern drive assemblies. Superseded by OEM part number 338518; modern aftermarket equivalent is Sierra part 18-7108. Genuine original equipment elastomer seal prevents raw water leakage in pump and housing assemblies. Compatible with Johnson/Evinrude outboards and OMC stern drive systems. Available from marine retailers as original OEM or modern replacement.