Outboard Motor Flusher Clamp

Pain Points We Solve

• Salt, sand & silt corrode your cooling passages – After every saltwater or sandy-water outing, mineral deposits and debris accumulate inside the engine cooling system. This flusher clamp lets you run fresh water through the entire system dockside or in your garage, flushing out corrosive buildup before it causes permanent damage
• ❌ Dry-running destroys the water pump impeller – Running the engine without water flow even briefly can burn out the impeller and overheat the motor. This clamp delivers a continuous water supply so you can safely test, tune, or service the engine on land without risking dry-run damage
• Clamps slip off or don’t seal properly – The adjustable stainless steel fixator and dual-disc PVC clamp design grip the lower unit water intake securely; the movable fixator lets you fine-tune disc spacing for a leak-free seal on different gearcase sizes
• Hard to connect to a standard garden hose – Includes a threaded adapter (25mm screw connector + 16mm hose barb) that connects directly to a standard garden hose or tap water supply — no special fittings needed
• Bracket corrodes or breaks after a season – The stainless steel fixator resists saltwater corrosion; the PVC disc body is impact-resistant and UV-stable for long-term outdoor use

Key Features & Benefits

• Cools the Engine – Prevents dry-running and extends motor lifespan by maintaining proper coolant flow during land-based testing
• Flushes Out Sand & Silt – Clears blockages and prevents corrosion in cooling passages after saltwater or sandy-water use
• Movable Stainless Steel Fixator – Adjustable disc spacing accommodates different gearcase sizes; stainless steel construction resists corrosion
• Dual-Disc PVC Clamp Design – Upper disc (114mm diameter) and lower disc create a secure water seal around the lower unit intake
• Standard Hose Adapter Included – 25mm screw connector + 16mm soft tube barb; connects to any standard garden hose or tap
• PVC + Stainless Steel Construction – Durable, corrosion-resistant materials built for repeated marine use
• Kit Includes: Flusher clamp + adapter + packaging

⚠️ Important Safety & Usage Notes

1. Be careful when pushing the pin into the buckle to avoid hand or finger injury
2. To prevent water pump damage, do NOT start or run the engine without cooling water flowing
3. Keep the area around the propeller clear during operation. As a precaution, remove the propeller
4. Start the engine in neutral at idle, then gradually increase RPM. Outboard max: 2,500 RPM. Inboard/sterndrive max: 1,500 RPM
5. If water flow is insufficient, stop immediately and troubleshoot before continuing
6. Flush until discharged water runs clear. In saltwater areas: outboard 3–5 min, inboard/sterndrive 10 min
7. Stop the engine before turning off the water supply
8. Retain the packaging for proper storage of the flush kit

Compatibility

• Mercury/Mariner outboards 20 HP and above
• 9.9/15 HP 4-stroke (323cc) Bigfoot outboards
• All 8/9.9 HP 4-stroke outboards (2005 model year and newer)
• 15 HP 4-stroke (351cc) outboards
• All MerCruiser stern drives (excluding Bravo One Perf. and Blackhawk)
• MHP "Torque Master" gearcases
• MerCruiser inboard/outboard (I/O) and inboard V6 models
• Outboards 18–25 HP

• Product Name: Outboard Motor Flusher Clamp (Engine Flush Kit)
• Material: PVC + Stainless Steel
• Color: Black / Silver
• Weight: 230g
• Overall Height: 229mm (9.02")
• Stainless Steel Fixator Height: 53mm (2.09")
• Upper Disc Diameter: 114mm (4.49")
• Screw Connector Outer Diameter: 32mm / Inner Diameter: 17mm
• Hose Barb Diameter: 16mm | Screw Interface Diameter: 25mm
• Mounting Hole Spacing: 41.3mm (1.63") | Hole Diameter: 6.4mm (0.252")
• Kit Contents: Flusher clamp + adapter + packaging