Water Pump Impeller Kit – Fits Johnson/Evinrude 40-50 HP (Replaces Sierra 18-3454, Johnson/Evinrude 438592, 433548, 433549, 777805) 70hp 3850492 OMC 5

3850492 OMC 5

1 x Idle Air Control (IAC) Motor (3843751/3857696)

Other causes include debris blockages

but larger chips may indicate an internal issue

The kit serves as an aftermarket replacement for Mercury/Quicksilver parts 46-812966A12

Water Pump Impeller Kit – Fits Johnson/Evinrude 40-50 HP (Replaces Sierra 18-3454, Johnson/Evinrude 438592, 433548, 433549, 777805) 70hp 3850492 OMC 5Product Details This Water Pump Impeller Kit Fits Johnson Evinrude 40 50 HP (Replaces 438597) is engineered for Johnson Evinrude 2 stroke outboard motors, including 40, 45, 48, and 50 HP models manufactured between 1989 and 1998. It is designed as a direct replacement for engines equipped with the small housing variant, ensuring proper cooling system function. It serves as a direct interchange for Sierra 18 3454, and Johnson Evinrude part numbers