Water Pump Impeller Kit – Fits Johnson/Evinrude 40-75 HP (Replaces 391635, 18-3378) 20-30HP Note the orientation of the

Note the orientation of the screws if they are different lengths

not suitable for inboard applications

Features a self-draining design with a bottom hole to prevent water collection and freezing

For Sherwood pumps: Widely used in G-series

Water Pump Impeller Kit – Fits Johnson/Evinrude 40-75 HP (Replaces 391635, 18-3378) 20-30HP Note the orientation of theProduct Details This Water Pump Impeller Kit Fits Johnson Evinrude 40 75 HP provides a complete solution for servicing the cooling system on Johnson Evinrude 4075 HP, 2 Stroke outboard engines from 19791989. Engineered for reliability, it ensures your engine maintains optimal operating temperature. This kit serves as a direct interchange for multiple OEM and aftermarket part numbers, including Johnson Evinrude 391635, Sierra 18 3378, GLM 12210, and