Moeller 099085-00 Pro Inboard Motor FlusherFlushing your motor is an important part of boat maintenance. It helps clear out contaminants, deposits, and other materials in your engine. Marine motor flushers are an easy way to help flush out and prevent damage and costly repairs. The Moeller Inboard Marine Motor Flusher is designed for inboards or boats with a thru-hull water intake.When using a marine motor flusher, it is critical to run the motor long enough to open the thermostat. This allows the water to clean out the cooling system as well and give your engine a proper flush. The Moeller Marine Pro installs in seconds and has a durable stainless-steel fitting. The 360-degree plastic support ring makes sure you have a tight fit.Features: Fits thru-hull and inboard motor types; Installs in seconds; T fitting is made of stainless steel and slides into the intake slot in either direction for a quick fit.; 360 plastic support ring to ensure a tight fit to the bottom of the boat.; Read your owners manual for specific recommendations on flushing.