Water Pump Impeller Kit – Fits Yamaha F6, F8, F9.9 4-Stroke (Replaces 68T-W0078-00, 68T-W0078-01, Sierra 18-3450) 488HP so you will need to

so you will need to purchase two kits for a complete service

Most technicians replace the wear plate whenever the impeller is changed

which are sold separately or as part of a complete water pump repair kit

Brand Part Number Johnson/Evinrude 390286 / 0390286 Johnson/Evinrude 777835 / 0777835 Sierra 18-3366 CEF 500353 Mallory Marine 9-45212 GLM 89990 SEI Marine 96-399-05E Soxa Marine 17IO016 / 17IO016K

ensuring it is clear of sharp edges

Water Pump Impeller Kit – Fits Yamaha F6, F8, F9.9 4-Stroke (Replaces 68T-W0078-00, 68T-W0078-01, Sierra 18-3450) 488HP so you will need toProduct Details This Water Pump Impeller Kit is designed to service the lower unit water pump on Yamaha F6, F8, and F9. 9 4 stroke outboard engines manufactured from 2000 through 2017 and later. It provides all necessary internal components to restore cooling performance and prevent overheating caused by a worn or damaged impeller. This kit is a direct replacement for Yamaha OEM part numbers 68T W0078 00 and 68T W0078 01, as well as Sierra Marine 18