Ensure impeller vanes are oriented correctly (typically by turning the driveshaft clockwise during install)
Locate the existing gear lube reservoir fitting on the inner transom shield
ensuring reliable fuel purification and engine protection
Replace them proactively if you notice any signs of wear
Note the rotational direction of the old impeller's vanes before removing it and the impeller key
Water Pump Impeller Repair Kit – Fits Mercury/Mariner 6-9.9 HP Outboards (Replaces 803748Q01, 803750A03, 853792A5) Honda Ensure impeller vanes are orientedProduct Details This Water Pump Impeller Repair Kit is designed for Mercury and Mariner 8 9. 9 HP 4 Stroke (209cc) outboards from 2005 and newer, specifically fitting models with serial number R042475 and up. The kit provides all necessary components for a complete overhaul of the water pump assembly, ensuring proper engine cooling and performance. It serves as a direct interchange for Mercury part numbers 803748Q01, 803750A03, 853792A5, 47 803748Q01,