Rectangular Motor FlushMolded PVC/Painted Steel Outboard Rectangular Motor Flush quickly flushes away salt, sand, minerals, and contaminates from your lower unit cooling system, extending the engine’s service life. Easy-to-use molded PVC cups deliver fresh water to flush the cooling system through side intakes on the lower unit. Simple garden hose connection, no tools required. Great for winterizing, tune-ups, and other maintenance that requires running an outboard engine out of the water. Features rectangular cups for use with larger outboards.WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to >P65Warnings.ca.gov.