Yamaha - Water Pump Repair Kit - Cooling System Service Kit - 61N-W0078-01-00

Overview

If your outboard isn’t cooling the way it should, this is one of the first places most of us look. A worn impeller or tired seals can sneak up on you, and before you know it, temps start climbing. This kit gives you everything you need to freshen up the water pump properly instead of chasing pieces one at a time. It’s a solid go-to when you want to keep water flowing strong and avoid bigger engine problems down the line.

Key Features

• Complete Cooling System Kit – Includes key components like the impeller, seals, gaskets, and internal hardware for a full service.

• Restores Proper Water Flow – Helps maintain consistent cooling performance to protect your engine from overheating.

• OEM-Engineered Components – Designed to match Yamaha specifications for proper fit and reliable operation.

• All-in-One Service Solution – Eliminates the need to source individual parts during a water pump rebuild.

Engine & Boat Compatibility

Compatible with select Yamaha 25 HP and 30 HP outboards, including certain F25, F25A, F25B, and C30 models. Always confirm fitment with your engine model and year before installation.

FAQ

Q: How often should I replace the water pump kit?
A: Most boaters change it every 1–2 seasons, or sooner if the motor sees heavy use or runs in sandy or salty water.

Q: What are signs my water pump is failing?
A: Weak telltale stream, overheating alarms, or inconsistent water flow are the biggest warning signs.

Q: Can I just replace the impeller instead of the full kit?
A: You can, but doing the full kit ensures seals and wear components don’t cause issues later.

Q: Is this a difficult install?
A: It’s a common service job, but it does require dropping the lower unit and reassembling carefully.

Q: Does saltwater use wear these parts faster?
A: Yes, salt and debris can shorten the life of the impeller and seals, so regular service is important.

• Supersessions
  61N-W0078-00-00