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Flush your outboard engine right on land with this purpose-built motor flusher clamp. Designed to connect a standard garden hose directly to your engine's cooling water intakes, it forces fresh water through the entire water pump and cooling passage system, washing away sand, salt, silt, and alkaline residue that accumulate during normal operation. Regular flushing with this tool prevents internal corrosion, clears clogged passages, and extends the life of your outboard—all without dragging your boat to the ramp. Ideal for boat owners, marine mechanics, and anyone performing routine maintenance or troubleshooting on the trailer. Choose from four models featuring dual‑flow or single‑flow technology with square or round marine‑grade rubber cups to match your engine's intake configuration.
| Model | Specs |
| ① Square Dual-Tube | Dual flow · Square marine rubber cup · 528g · 40×14×7.5 cm |
| ② Round Dual-Tube | Dual flow · Round marine rubber cup · 475g · 40×14×10 cm |
| ③ Square Single-Tube | Single flow · Square marine rubber cup · 410g · 30×14.5×7.5 cm |
| ④ Round Single-Tube | Single flow · Round marine rubber cup · 348g · 28×15×10 cm |
| Material | Marine-grade black PVC cup + anti-corrosion coated steel frame |
| Water Flow Technology | Dual flow or single flow (model dependent) |
| Hose Connection | Standard garden hose compatible (elastic dual inlet tubes) |
| Application | Flushes sand, salt, silt, and alkaline residue from outboard cooling systems |
| Suitable Engine Type | Most outboard motors with side or lower unit water intakes |
| Use Case | On-land routine maintenance, troubleshooting, winterization prep |
| Package Includes | 1 x outboard motor flusher (select model from options) |
A: Check your outboard's water intake design. If your engine has intake ports on both sides of the lower unit, a dual-flow model ensures even water distribution and complete flushing. If your engine only draws water from one side, a single‑flow model is the perfect fit and saves a little weight.
A: The flexible rubber cups and adjustable frame are designed to fit most major outboard brands and models. The key is matching the cup shape (square or round) to the shape of your engine's water intake ports. If your intakes are rectangular, go with a square cup; if they're circular, choose a round cup. When in doubt, both dual tube styles will fit most common configurations.
A: For a thorough flush, you should start the engine so the water pump actively circulates water through the entire cooling jacket. However, you can also run water through the system without starting the engine for a basic salt and debris rinse. Always follow your engine manufacturer's flushing recommendations.
A: With the hose turned on and water flowing, press the flusher firmly against the intakes and watch for water gushing from the tell-tale (pee hole) on the engine block. If you see good water flow there and minimal leakage around the cups, the seal is solid. Adjust the clamp tension if needed.
A: Remove the flusher after each flushing session. It is designed as a temporary tool for maintenance, not a permanent attachment. Leaving it clamped on for extended periods may deform the rubber cups over time due to constant pressure.
