521550-1 Inboard Motor Flush Molded Rubber/Aluminum Inboard Motor Flush quickly flushes away salt, sand, minerals, and contaminates from your lower unit cooling system extending the engine’s service life. Easy-to-use by fitting the rubber cup over the water intake, connecting a garden hose, and extending the aluminum leg to seal the cup to the hull. Fresh water flushes the cooling system, no tools required. Great for winterizing, tune-ups, and other maintenance that requires running an inboard engine out

<p><strong>Inboard Motor Flush</strong></p>

<p>Molded Rubber/Aluminum&nbsp;</p>

<p>Inboard Motor Flush quickly flushes away salt, sand, minerals, and contaminates from your lower unit cooling system extending the engine&rsquo;s service life. Easy-to-use by fitting the rubber cup over the water intake, connecting a garden hose, and extending the aluminum leg to seal the cup to the hull. Fresh water flushes the cooling system, no tools required. Great for winterizing, tune-ups, and other maintenance that requires running an inboard engine out of the water.</p>
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