Moeller Marine 099076-00 Universal Motor FlusherMoeller offers a comprehensive series of motor flushers that extend your motor life quickly, easily and effectively.Supersedes Sierra 18-9010The Universal Round Cup Motor Flusher Features: Flushes contaminates from lower unit cooling systems ; Quickly removes salt and mineral build-up with a simple flush that slips over side water inlets on most inboard and outboard lower units.; Install in seconds using just a garden hose.; No tools required.;