Yamaha - Impeller - Water Pump Component - YJA-01156-26-02

Overview

If you’ve been around Yamaha outboards, you already know the impeller is one of the most important maintenance parts on the motor. I’ve seen engines run strong one day and start overheating the next just because the impeller gave out. The Yamaha Impeller YJA-01156-26-02 is what keeps water moving through the system so everything stays cool and protected. It’s a simple part, but it’s the heart of the cooling system when you’re out on the water.

Key Features

• Efficient Water Pumping Action – Moves water through the cooling system to regulate engine temperature.

• Yamaha Engineered Fit – Designed to match factory specifications for proper fit and rotation within the housing.

• Flexible Rubber Construction – Built to maintain blade shape and performance under continuous use.

• Reliable Cooling Performance – Supports steady water flow to help prevent overheating.

• Routine Maintenance Essential – Commonly replaced during scheduled service to maintain engine reliability.

Engine & Boat Compatibility

The Yamaha Impeller YJA-01156-26-02 is designed for Yamaha outboard engines equipped with a lower unit water pump system.

It is commonly used during routine water pump service where maintaining proper water flow is critical for engine cooling and performance. Always confirm compatibility using your engine model and parts diagram before installation.

FAQ

Q: How often should I replace my impeller?
A: Most recommend replacing it every season or every 100 hours, depending on use.

Q: What are signs of a failing impeller?
A: A weak water stream, rising engine temperature, or overheating warnings are common signs.

Q: Can I run the engine with a bad impeller?
A: It’s not recommended. Lack of water flow can quickly lead to engine damage.

Q: Does running in sandy water affect the impeller?
A: Yes, debris can wear down the blades faster and reduce its effectiveness.

Q: Should I replace other parts during impeller service?
A: It’s a good idea to inspect or replace the housing, gaskets, and wear plate at the same time.