Seawater Pump Impeller — Rubber Flexible Impeller Compatible with CEF 500177 Outboard Engines A directfit replacement impeller designed for outboard engine seawater pumps that require CEF 500177 compatibility. The flexible rubber construction restores raw water circulation, protects the engine from overheating, and returns lost cooling performance without the need for costly pump or housing replacement. Key benefits Restores cooling: Reestablishes reliable rawwater flow to prevent engine overheating and reduce risk of impellerrelated failures. Flexible sealing action: Rubber blades bend and recover to maintain a good seal against the pump housing, improving suction and reducing cavitation at low and varied RPM. Corrosionresistant for seawater use: Rubber material resists deterioration from saltwater exposure better than rigid components, extending service life when used and maintained correctly. Maintenanceready replacement: Designed for swapin replacement with pumps that use the CEF 500177 specification, helping complete routine service quickly. Key attributes Functionality: Rotating impeller for seawater pump applications; moves cooling water through the engine's rawwater cooling system. Compatibility: Specifically compatible with CEF 500177 outboard engine pump applications. Material: Durable rubber flexible blades engineered for repeated flexing in seawater environments. Performance: Provides consistent water flow over a range of engine speeds, restoring proper cooling and protecting engine components from heatrelated damage. Typical applications / use cases Routine service replacement: a worn, torn, or hardened impeller during scheduled maintenance to ensure dependable cooling at the start of the season. Emergency field : Carry as a spare on longer trips for fast replacement if the impeller fails, restoring water flow and preventing engine overheating while underway. Saltwater boating and fishing: Ideal for outboard engines used in coastal and offshore environments where reliable rawwater pumping is essential. Installation and maintenance notes Intended as a replacement impeller for systems that specify CEF 500177 compatibility; follow the engine or pump manufacturer's service manual for removal, inspection, and installation procedures. Inspect pump housing, wear plate, and shafts for wear or corrosion when replacing the impeller; debris or damaged internal components can reduce impeller life. Periodically check the impeller for blade cracking, missing blades, or hardening; if any signs of wear are present. Why choose this impeller This flexible rubber impeller is purposebuilt to worn parts in seawater pump systems that require CEF 500177 compatibility. It provides the flexibility and sealing action to restore proper cooling flow, helping protect the engine from heat damage and keeping your boat operational when it matters most.