Water Pump Impeller Kit – Fits Yamaha 9.9/15 HP Outboard (Replaces 682-W0078-A1-00) 4.4HP running too cold (not reaching

running too cold (not reaching proper operating temperature)

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

1990–2000)

as this can crack the plastic housing or damage the plate

If anything differs—even if your model appears on the compatibility list—do not order

Water Pump Impeller Kit – Fits Yamaha 9.9/15 HP Outboard (Replaces 682-W0078-A1-00) 4.4HP running too cold (not reachingProduct 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