Yamaha Water Pump Repair Kits

Need to replace the impeller on your outboard motor? Our Yamaha outboard water pump repair kits include everything required for a full outboard motor impeller replacement—no second guessing, no missing pieces. Whether you’re dealing with a worn impeller or just handling your seasonal service, we’ve packed it all into one easy kit so you’re ready to get back on the water without delay.

If you’ve ever had your motor overheat unexpectedly—or lost power when you needed it most—there’s a good chance the impeller of the water pump was the issue. It happens more often than you'd think. But instead of tracking down individual parts or rolling the dice with generic replacements, you can grab one of our Yamaha OEM repair kits and know everything fits right the first time.

These kits are available for both 2-stroke and 4-stroke Yamaha outboards, and each one is tailored to your specific engine. That means no returns, no compatibility headaches—just open the box, install the parts, and your cooling system is good as new.

What’s included in a Yamaha outboard water pump repair kit?

Each Yamaha water pump repair kit comes with the critical components you need to restore water circulation and cooling performance:

• Impeller of the water pump
• Insert cup
• Pump case gaskets
• Impeller plate
• Bolts
• Impeller key
• Any other seals or parts required for your exact model

These aren’t pieced together with guesswork—they’re matched to Yamaha specs for a tight fit and long-lasting results. If you're wondering how to replace outboard impeller parts the right way, this is your best starting point.

When should I replace the impeller on outboard motor systems?

It’s best to swap out the impeller every 100 hours of engine use or once per season—whichever comes first. Even if the impeller looks okay at a glance, rubber breaks down over time, especially with salt exposure or extended storage. If you notice overheating or the water output from the telltale seems weak, your impeller of the water pump might already be compromised.

What are the signs you need an outboard motor impeller replacement?

There are a few things to watch out for:

• Engine overheating, even in clean water
• Weak or erratic water stream from the cooling telltale
• Odd noises or grinding from the lower unit
• Black rubber debris inside the pump housing

All of these point to a failing or damaged impeller on your outboard motor—and catching it early can prevent far worse issues.

TL;DR

Yamaha outboard water pump kits make impeller replacement simple. They include all required parts in one box—OEM impeller, gaskets, plates, and more—so you can restore your cooling system without missing a step. Replacing the impeller of the water pump helps protect against overheating and keeps your outboard engine running strong.

Routine outboard motor impeller replacement is one of those jobs that seems small but makes a huge difference. The impeller of the water pump is what keeps your engine cool by drawing in and circulating water. If it goes out mid-trip, you could lose power—or worse, damage the engine block. That’s why having the full Yamaha repair kit on hand matters.

Each of our kits is designed to make it easy to change the impeller on outboard motor systems without extra trips to the store or trial-and-error with universal parts. If you’ve ever wondered how to replace outboard impeller components without a bunch of hassle, this is your answer.