<h2>Outboard Water Pump Impeller for Mercury Marine</h2><p>This outboard water pump impeller is a direct replacement for Mercury Marine engines, engineered to circulate coolant and prevent overheating during operation, with OEM cross-reference numbers 47-85089-3, 47-85089-10, and 18-3057.</p><h4>Overview</h4><p>This outboard water pump impeller is a critical component for Mercury Marine outboard motors, ensuring proper cooling water flow to the engine block. Designed as a direct replacement, it matches the performance and durability of the original impeller, making it a reliable choice for routine maintenance or emergency repair. Suitable for a wide range of Mercury Marine outboards, this impeller keeps your engine running at safe operating temperatures.</p><h4>Built For Performance</h4><ul> <li>Precision-molded rubber blades for efficient water movement</li> <li>Stainless steel hub insert for secure attachment</li> <li>Thermally stable rubber compound resists heat and wear</li> <li>Direct replacement for OEM part numbers 47-85089-3, 47-85089-10, and 18-3057</li> <li>Supports continuous high-rpm operation without deformation</li> <li>Resists cracking and swelling in saltwater or freshwater</li> </ul><h4>On-The-Job Use</h4><ul> <li>Replacing a worn impeller during annual outboard servicing</li> <li>Restoring cooling flow after an overheating event</li> <li>Maintaining consistent engine temperature in both saltwater and freshwater</li> <li>Used by marine technicians for routine water pump repairs</li> <li>Installing during a full engine tune-up for peace of mind</li> </ul><h4>Specs At A Glance</h4><table><tr> <td><strong>Part Number(s)</strong></td> <td>47-85089-3, 47-85089-10, 18-3057</td> </tr></table><h4>Good To Know</h4><p><strong>Q:</strong> How often should I replace the impeller? <strong>A:</strong> It is recommended to replace the impeller every 1 to 2 seasons or after 100 hours of operation, depending on water conditions and usage.</p><p><strong>Q:</strong> Can I install this impeller myself? <strong>A:</strong> Yes, with basic hand tools and a service manual, but ensure the housing is clean and the keyway is aligned properly to avoid damage.</p><p><em>Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.</em></p>