Sierra 18-9009 Universal Inboard Engine Flusher

The Sierra 18-9009 Universal Inboard Flusher is an essential maintenance tool designed to keep inboard marine engines running clean and reliably. Compatible with most inboard engines, it provides a quick and easy way to flush the raw water cooling system of accumulated salt, sediment, and other impurities — right from your driveway, without launching the boat.

The flusher features a molded rubber suction cup that seats over the thru-hull scoop strainer or raw water intake, paired with an aluminum telescoping pipe that adjusts to accommodate varying hull-to-ground clearances on different trailer heights. The large cup design minimizes fall-off and blow-by during the flush. A standard garden hose snaps directly into the universal water pipe connector — no tools required.

Key Features:

• Universal fit — compatible with most inboard marine engines
• Installs in seconds with no tools required
• Molded rubber cup seats over thru-hull scoop strainer or raw water intake
• Aluminum telescoping pipe adjusts for hull-to-ground clearance
• Large cup design prevents blow-by during flushing
• Connects to a standard garden hose via snap-on universal fitting
• Flushes cooling system of salt, sediment, and impurities
• Allows engine to idle for tuning and adjustment out of the water
• Covered under Sierra's industry-leading customer satisfaction warranty

Regular flushing with the Sierra 18-9009 helps extend engine life, prevent corrosion, and simplify dockside or driveway maintenance. Sierra products meet or exceed OEM quality standards and are engineered to withstand the demands of the harsh marine environment.