Impeller for Tohatsu 6-9.8 HP (Compatible with Mercury/Parsun) – 6-Blade Water Impeller

The 52.344.00 impeller is designed to service a wide range of small outboard motors by Tohatsu, Mercury (Mariner), and Parsun in the 4-9.8 HP range. It covers Tohatsu’s 6, 8, and 9.8 HP two-stroke models, as well as the Tohatsu/Mercury 4, 5, and 6 HP four-stroke engines (which are essentially Tohatsu-built). In addition, this impeller applies to Chinese Parsun outboards in the 4-8 HP class that use a similar water pump design. By replacing the original part numbers (Tohatsu 3B2-65021-1/M, Mercury 47-436065-2, Parsun F8-04000200), the impeller restores factory cooling performance.
Made from premium rubber, the impeller withstands saltwater and long hours of operation – critical for small engines often used for trolling or as auxiliary motors. Its 6 blades deliver strong and consistent water flow to keep the engine cool under full load. Replacing the impeller is straightforward – remove the old rotor and install the new one with no extra modifications needed.
For owners of small boats with Tohatsu/Mercury/Parsun engines, this impeller is a must-have spare on board. Replacing it regularly (recommended annually or every 100 hours) will ensure your engine doesn’t overheat and your boating adventures remain trouble-free.

• Application: Intended for small RIBs, fishing boats, and kicker motors using Tohatsu, Mercury (Mariner), or Parsun engines from 4 to 9.8 HP. The impeller maintains effective cooling during extended trolling or full-throttle operation.
• Recommendation: Suitable for vessels around 2.5–4.5 meters long powered by Tohatsu/Mercury 6-9.8 HP two-strokes or 4-6 HP four-strokes. Replace the impeller annually to ensure optimal cooling system performance and prolong your engine’s life.