Purpose and benefit Designed for water pump systems to help maintain normal engine cooling. Using the correct impeller reduces the risk of overheating, limits engine wear caused by poor coolant flow, and helps keep your outboard running reliably. Compatibility and fit Suitable for all outboard engines. Precisely matched to model 4789984T4 to ensure easy installation and strong compatibility with systems that use that model specification. Size and installation Exact size match for the 4789984T4 model. The correct fit simplifies replacement and minimizes installation time, helping you get back on the water faster. Material and durability Made of wearresistant material for enhanced durability and extended impeller life. Built to withstand regular use and the abrasive effects of routine coolant flow. Performance Maintains consistent water flow through the cooling system when properly installed, supporting stable engine temperatures and operational reliability over typical service intervals. Practical use scenarios Planned maintenance: the impeller on scheduled service to maintain cooling performance for recreational or work boats that use the 4789984T4 specification. Emergency replacement: Swap in this correctly sized impeller after a failed or degraded impeller to restore coolant circulation and reduce the chance of overheating while preparing the engine for inspection or . Fleet or rental servicing: Use the durable, wearresistant impeller as a straightforward replacement part during routine turnover of outboard engines to keep multiple boats operational with minimal downtime. What to expect A directfit replacement for parts listed as 4789984T4 compatible. A durable, wearresistant impeller designed for the typical demands of outboard engine water pump systems. Straightforward installation when replacing an existing impeller that matches the 4789984T4 specification. Note: Use this impeller as the correct replacement for systems that specify model 4789984T4. Follow manufacturer service procedures for removal, inspection, and installation to ensure proper operation.