Jun 12, 2026Buying Guides
Yamaha Water Pump Kit Part Number Guide
Find the right Yamaha Water Pump Kit by model and part number. Proper replacement helps prevent overheating and keeps your outboard running reliably.
Yamaha Water Pump Kit Part Number Guide
Find the Right Water Pump Kit for Your Yamaha Outboard
The water pump system is one of the most important components in a Yamaha outboard engine. It continuously circulates cooling water through the engine to maintain proper operating temperature and prevent overheating. Over time, key components such as the impeller, wear plate, seals, and gaskets can wear out and reduce cooling efficiency.
Choosing the correct Water Pump Kit ensures reliable cooling performance and helps protect your engine from costly damage.
What's Included in a Yamaha Water Pump Kit?
A typical water pump repair kit may include:
- Impeller
- Water Pump Housing
- Wear Plate
- Gaskets
- Oil Seals
- O-Rings
- Dowel Pins
Replacing these components together helps restore the cooling system to optimal condition.
How to Identify the Correct Water Pump Kit
Before ordering a replacement kit, identify:
Engine Model
Locate the model number on the outboard engine cover or identification plate.
Horsepower Rating
Different horsepower ranges often use different water pump assemblies.
Production Year
Some Yamaha models have multiple kit options depending on manufacturing year.
Matching your engine model, horsepower, and year ensures the correct kit selection.
Common Yamaha Water Pump Kit Applications
Water pump kits are available for a wide range of Yamaha outboards, including:
- 15HP – 20HP
- 25HP – 30HP
- 40HP – 50HP
- 60HP – 90HP
- 115HP – 150HP
- 200HP – 300HP
Always verify the part number before ordering.
When Should You Replace Your Water Pump Kit?
Regular inspection is recommended every 100 operating hours or at least once per year.
Replace the water pump kit if you notice:
- Engine overheating
- Weak cooling water stream
- Reduced cooling efficiency
- Impeller wear or damage
- Water pump housing wear
For most applications, replacing the water pump kit every 2–3 years helps maintain reliable engine protection.
Why Regular Replacement Matters
A worn water pump can lead to:
- Engine overheating
- Loss of performance
- Increased repair costs
- Premature engine wear
Replacing the water pump kit on schedule helps extend engine life, improve reliability, and keep your Yamaha outboard performing at its best.
Need Help Finding the Right Kit?
Contact us with your Yamaha model number, horsepower, and production year. Our team can help you identify the correct Water Pump Kit and compatible replacement parts for your engine.