Features: 1.Fitment: With replacing part number of 377230, replacement for Johnson Evinrude OMC outboard motor 35hp 40hp 50hp 55hp. 2.Application: Suitable for marine pumping tasks, such as engine cooling, water transfer, wash down and bilge water pumping purposes, suitable for fresh or sea water. 3.Premium Material: Made of premium CR and brass, anti corrosion and durable, which can withstand harsh marine environment. 4.Simple Installation: It can be installed easily and quickly, requires only simple hand tools for installation. 5.High Reliability: Subjected to rigorous quality processes to ensure reliable, efficient and long lasting performance. Specification: Item Type: Water Pump Impeller_x000D_ Material: CR Impeller + Brass Shaft Sleeve_x000D_ Blade Number: 6_x000D_ Replaces Part Number: 377230, 0377230, 777213, 18-3083_x000D_ Depth/Height/Width: Approx. 21.84mm/8.6in_x000D_ External Overall Diameter: Approx. 69.85mm/27.5in_x000D_ Internal Shaft Insert /Hub Diameter: Approx. 16.00mm/6.3in_x000D_ Fitment: Replacement for Johnson Evinrude OMC outboard motor 35hp 40hp 50hp 55hp_x000D_ _x000D_ Instruction:_x000D_ You should replace your flexible pump impellers at least once every year or sooner depending on the engine duty. 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 boating sports. PackageList: 1 x Water Pump Impeller Note: Please double check the part number of your item, matching information is for reference only. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!