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Flushing Adaptor for 4 Stroke Mercury Mariner Outboard - 3/4 INCH GH x 1/2
Part No: 46276-AF
The outboard should be flushed after every use in salt or dirty water. Freshwater flushing with clean water will dislodge most contaminants (sand, silt, mud, etc.) and force them out of the passages in the cooling system. It will add years of life to your outboard.
It has been used in the water pump of my 1923 Aston Martin. However, I had to 'unwind it' into cord strips. I have found that keeping in it original form keeps it from drying out, ready for next time.