Single Feed Flush MuffThese flush muffs are used to flush outboards with fresh water after use in salt water. This is very important to ensure that salt and other contaminants are washed out to protect the outboard from corrosion. We have two versions of the outboard flush muffs available; a single and dual feed option. The dual option feeds water via a u tube ensuring that water is supplied evenly to both sides. The single feed supplies water through one side of the flush