Feature:1. Perfect Fitment: Water pump impeller is replacement for Johnson Evinrude 2 stroke 2hp, 3hp, 4hp outboard motors, perfect matching.2. Replace Part Number: The OEM number is 433935, 433915, 396852, 767407, 500332, and the part number is 183015.3. High Quality Materials: Impeller is made of high quality copper and rubber materials, wear resistant, high strength, sturdy and durable.4. Excellent Performance: Professional manufacturing, exquisite workmanship, high efficiency, stable performance and high reliability.5. Application: Impeller is used for marine water pumping such as engine cooling, water transfer, wash down and bilge water pumping purposes.Specification:Item Type: Water Pump ImpellerMaterial: CopperandRubberReplace OEM: 433935, 433915, 396852, 767407, 500332,Replace: 18-3015Number of Blades: 3High Degree of Impeller: Approx. 17mm or 0.67inImpeller Outer Diameter: Approx. 34mm or 1.34inInsert Diameter of Inner Axis: Approx. 11mm or 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..Package List:1 xWater Pump ImpellerNote: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!