1Perfect Fitment: Water pump impeller is replacement for Johnson Evinrude 2 stroke 2hp, 3hp, 4hp outboard motors, perfect matching. 2Replace Part Number: The OEM number is 433935, 433915, 396852, 767407, 500332, and the part number is 183015. 3High Quality Materials: Impeller is made of high quality copper and rubber materials, wear resistant, high strength, sturdy and durable. 4Excellent Performance: Professional manufacturing, exquisite workmanship, high efficiency, stable performance and high reliability. 5Application: Impeller is used for marine water pumping such as engine cooling, water transfer, wash down and bilge water pumping purposes. Item Type: WaterPumpImpellerMaterial: Copper+RubberReplace OEM: 433935, 433915, 396852, 767407, 500332,Replace: 18-3015Number of Blades: 3High Degree of Impeller: Approx. 17mm/0.67inImpeller Outer Diameter: Approx.34mm/1.34inInsert Diameter of Inner Axis:Approx.11mm/0.43inFitment:Replacement for Johnson Evinrude 2 stroke 2hp 3hp 4hp(Ultra Excel 1987-2006) outboard motors;Replacement for Johnson 2-stroke outboard motors: J2 J3 J4;Replacement for Evinrude 2 stroke outboard motors: E3 E4. 1 x WaterPumpImpeller 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