Marine cleaning accessory that quickly and easily flushes the engine cooling system, removing salt, sand, silt and alkali. Keeps cooling passages clear and helps maintain engine performance. Boat outboard motor flusher that lets you run fresh water through the engine cooling system. Simple setup with a standard garden hose, no tools required. Washer for marine use with a professional, practical design for regular motor cleaning and maintenance. Built for reliable performance in marine environments. Boat motor flusher with universal compatibility. Connects to a standard garden hose to clear salt and mineral build-up from the cooling system. Use scenarios - After boating in salt or brackish water, rinse the cooling passages with fresh water to reduce corrosion and mineral deposits. - Before long-term storage, flush to remove salt and debris and help protect the engine. - During routine maintenance, use as part of a quick cleaning routine to maintain cooling efficiency on outboard motors.