The Sierra 18-3415 Water Pump Kit With Housing is designed for Yamaha 40HP 2-Stroke outboards from 1997-2006, 50HP 2-Stroke outboards from 1997-2009, 50HP 4-Stroke outboards from 1997-2025 and 60HP 4-Stroke outboards from 2002-2025. It includes the replacement housing and water-pump service components required for a complete overhaul.
Regular water pump servicing helps protect your outboard from overheating and cooling system failure. The Sierra 18-3415 kit includes a new water pump housing, impeller, wear components, seals and hardware, making it an ideal solution for complete water pump maintenance.
The Sierra 18-3415 is the complete version of this water pump service kit and includes a replacement water pump housing. If your existing housing is in good condition and does not require replacement, the more economical alternative is the Sierra 18-3434 Water Pump Repair Kit, which services the same Yamaha application without the housing.
Key replacement components included in this kit are also available separately, including Sierra 18-3069 impeller, Sierra 18-3449 insert cup, Sierra 18-3305 impeller key, Sierra 18-3186 impeller plate and Sierra 18-1830 water seal damper. Replacing worn water pump components during routine servicing helps maintain proper cooling water flow and reduce the risk of engine overheating.
Need help with fitment? Contact us with your engine model and serial number and we'll help check suitability.
Does this kit include the water pump housing?
Yes. Sierra 18-3415 includes a replacement water pump housing and is the complete version of the Sierra 18-3434 repair kit.
What is the difference between Sierra 18-3415 and Sierra 18-3434?
The Sierra 18-3415 Water Pump Kit with Housing includes a replacement water pump housing. The Sierra 18-3434 Water Pump Repair Kit services the same Yamaha application but does not include the housing.
Which impeller is included in the Sierra 18-3415 kit?
The Sierra 18-3415 includes Sierra 18-3069 impeller along with the associated wear components and seals required for a complete water pump service.
Why should I replace my water pump kit?
Routine replacement of water pump components helps maintain proper cooling water flow and reduces the risk of engine overheating and cooling system damage.
Australian Dollars
