Feature: 1. OEM Part: Replacement for Tohatsu replacement for Nissan Outboard 3B2660210M, 3B2‑65021‑1 M, replacement for Sierra 18‑8920, replacement for Parsun Makara F8‑04000200, etc. 2. Great Fitment: The boat water pump impeller is a perfect replacement for Mariner Outboard Engines 8hp 4 Stroke standard gearcase from 2005 and 9.9hp 4 Stroke standard gearcase from 2005. 3. Purpose: The flexible 6 blades impeller is designed for marine water pumping such as engine cooling, water transfer, wash down and bilge water pumping purposes, suitable for fresh or sea water. 4. Recommendation: Suggest replacing your flexible pump impellers at least once every year or sooner depending on the engine duty; always carrying spare impellers on board before boating activities. 5. High Quality Materials: The heavy duty impeller is manufactured by premium hardened copper and neoprene rubber, conducive to water pump maintenance, reliable and long lasting to use. Specification: Item Type: Water Pump Impeller Material: Copper + Neoprene OEM: 3B2-65021-1, 3B2-65021-0 M Replacement for Tohatsu replacement for Nissan Outboard 3B2660210M, 3B2-65021-1 M Replacement for Sierra 18-8920 Replacement for Mercruiser 47-8037481, 8037481 Replacement for Parsun Makara F8-04000200 Blades: 6 Height: Approx. 18.50mm/0.7in Overall Diameter: Approx. 40.00mm/1.6in Shaft Diameter: Approx. 11.50mm/0.5in Fitment: Replacement for Mariner Outboard Engines 8hp 4 Stroke standard gearcase from 2005 Replacement for Mariner Outboard Engines 9.9hp 4 Stroke standard gearcase from 2005. Package List: 1 x Water Pump Impeller Note: 1. Please double check the part number of your item, matching information is for reference only.2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!