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Shoreline Marine Motor Flushers

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The Large Rectangular Motor Flusher brings the chore of flushing contaminants from your large outboard down to size. Using no tools other than a standard garden hose, you can easily perform in-season maintenance or winterize your boat. Just place the Shoreline Marine™ Large Rectangular Motor Flusher’s muffs over the water intake, turn on the hose and start the engine for quick and effective cleaning.


  • Motor flusher for larger outboards
  • Flushes contaminants and salt deposits from cooling systems using only a garden hose
  • Allows idling for engine adjustments when out of the water
  • No tools necessary for installation or removal
  • Great for in-season maintenance or winterization
  • Model: SL52206