Moeller offers this pro series of motor flushers that quickly removes contaminates from your lower unit cooling system. Each flusher quickly removes salt and mineral buildup with a stainless steel T fitting that slides into the side water inlets on most inboard and outboard lower units. Supported with a 360° plastic ring to ensure a tight fit. Motor flusher installs in seconds using just a garden hose. Can be used on most inboard/outboard lower units Installs in just seconds with a garden hose | Pro Series Inboard Motor Flusher