It is important to replace the impeller and other wear items inside your outboard's water pump periodically. If the impeller gets old and brittle, not only will the engine overheat but a section may break off and block the water passages inside the engine turning a simple maintenance job into a large repair job.

In this video I fit a complete water pump kit, impeller and all, to a Yamaha 50HP four stroke outboard.

Replacing the water pump impeller on an older Johnson 30HP outboard. If your impeller needs replacing, use the links below to find the correct part number:

• Honda four stroke impeller
• Johnson/ Evinrude impeller
• Mercury impeller
• Suzuki impeller
• Yamaha two stroke impeller
• Yamaha four stroke impeller