1、Part Number: According to the original factory specifications, replacing part number is 47‑161541/47‑16154‑1, replace OEM is 345‑65021‑0/345‑65021‑0M/345650210/345650210M/18‑8923. 2、Perfect Replacement: Water pump impeller, replacement for Nissan Tohatsu Outboard 25/30/35/40 HP, replacement for Mariner Outboard 25/30 HP. 3、High Compatibility: Compatible with the outboards boat motor replacement for Sierra 18‑8923, replacement for Mallory Marine 9‑45400, makes repair and maintenance of water pumps easy. 4、Rigorous Testing: The flexible impeller undergoes strict quality procedures to ensure reliable, efficient and long‑lasting performance. You can replace the impeller in advance according to the load of the engine. 5、Easy Installation: Easy to install and use. Direct replacement for the old or damaged impeller, offers better performance for engine cooling system. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.