Features: 1. Fitment: With part number 377230, replacement for Johnson Evinrude OMC outboard 35hp 40hp 50hp 55hp. 2. Application: Suitable for marine pumping tasks, such as engine cooling, water transfer, cleaning and bilge water pumping, suitable for fresh water or sea water. 3. Premium Material: Made of premium CR and brass, anti corrosion and durable, which can withstand harsh marine environments. 4. Easy Installation: It can be installed easily and quickly, only requires simple hand tools for installation. 5. High Reliability: Subjected to rigorous quality processes to ensure reliable, efficient and long lasting performance. Item Type: Water Pump Impeller Material: CR Impeller + Brass Shaft Sleeve Number of Blades: 6 Replaces Part Number: 377230, 0377230, 777213, 18-3083 Depth/Height/Width: Approx. 21.84mm/8.6in Outer Overall Diameter: Approx. 69.85mm/27.5in Internal Shaft Insert/Hub Diameter: Approx. 16.00mm/6.3in Fitment: Replacement for Johnson Evinrude OMC Outboard 35hp 40hp 50hp 55hp Instruction: You should replace your flexible pump impellers at least once a year or more often depending on the engine load. It is one of the most vital components of the engine cooling system and should always be treated as such. Always carry spare impellers on board before engaging in boating. 1 x Water Pump Impeller