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What does the "double-lip design" do
Relieve tension by swiveling the alternator and remove the old belt
Drain the engine cooling system into an appropriate container
Install the new impeller with a twisting motion
Water Pump Impeller Kit – Fits Johnson/Evinrude 20-35 HP (Replaces 393630) 250HP What does the "double-lip design"Product Details This Water Pump Impeller Kit is designed for direct fitment on Johnson Evinrude 20 35 HP 2 stroke outboard engines manufactured from 1980 and later. It provides a complete solution for servicing or rebuilding the water pump to ensure optimal engine cooling and prevent overheating. It serves as a direct aftermarket replacement for Johnson Evinrude OEM part 393630 and interchanges with Sierra 18 3382, GLM 12960, and Mallory 9 48300.
