Rectangular Water Flusher for Outboard Motors

This outboard motor water flusher is a quick-install maintenance tool designed to keep your engine clean and running smoothly. The rectangular cap (123 mm × 76.7 mm) fits most standard outboard motors, including Johnson, Evinrude, Mercury, Yamaha, Chrysler, Force, Honda, Nissan, Suzuki, and Tohatsu.

The flusher connects easily to a standard garden hose and allows you to flush contaminants from the cooling system while idling the engine for adjustments. Installation takes seconds—no special tools required. The high-elasticity bracket resists deformation under pressure, ensuring long-term durability.

Use after every boating trip to remove salt, sand, and other debris that can corrode internal engine components. This extends engine life and maintains optimal cooling performance.

The arm length is 256 mm (10 inches), providing comfortable reach and control. Simply attach your hose, fit the cap over the water intake ports, and run the engine at idle while fresh water circulates through the system.

Check your outboard’s intake port size against the 123 mm × 76.7 mm rectangular cap dimensions before ordering to ensure compatibility with your specific motor model.