4 Pack 311598 Fill and Drain Screw Washer, Compatible with Johnson Evinrude OMC Outboard and OMC Sterndrive Gearcase Lower Unit Oil, Replaces 3852105 777517 Sierra 18-4248 Mallory 9-60408
【Purpose Built Seal】Fits the lower unit fill screw and drain screw to keep gear lube in and water out during service and storage.
【Cross Reference】Matches 311598 and replaces 3852105, 777517, Sierra 18-4248 18-4248-9 18-42481-9, Mallory 9-60408. Always match by part number.
【Compatibility】compatible with Johnson and compatible with Evinrude outboards, also compatible with OMC outboards and OMC sterndrive gearcases that use the above part numbers.
【Marine Grade Nylon】Tough nylon washer resists swelling in gear oil, holds shape under clamp load, seals reliably in salt or fresh water environments.
【4 Pack Convenience】Includes 4 washers for two complete services or multiple engines. Clean the seat, lightly oil the washer, install and torque to spec. Questions welcome through Amazon Messages.