Water Pump Impeller Kit – Fits Yamaha 9.9/15 HP Outboard (Replaces 682-W0078-A1-00) 4.4HP Mercury/Force/Mariner: Fits select 70-90 HP

Mercury/Force/Mariner: Fits select 70-90 HP 2-Stroke Force engines and various 40-140 HP Mercury/Mariner models

or missing blades on the old impeller upon inspection

running too cold (not reaching proper operating temperature)

as this can crack the plastic housing or damage the plate

Water Pump Impeller Kit – Fits Yamaha 9.9/15 HP Outboard (Replaces 682-W0078-A1-00) 4.4HP Mercury/Force/Mariner: Fits select 70-90 HPProduct Details This Water Pump Impeller Kit Fits Yamaha 9. 9 15 HP Outboard (Replaces 682 W0078 A1 00) is designed for Yamaha 9. 9 HP and 15 HP 2 stroke outboard engines from 19841995 and select 4 stroke models produced between 1985 and 2004. It also fits compatible Mariner outboards sharing the same engine specifications. This kit serves as a direct interchange for Yamaha part numbers like 682 W0078 00 00 and 682 W0078 A1 00, as well as aftermarket