Water Pump Impeller Kit – Fits Yamaha 60-90 HP Outboards (Replaces 688-44352-03-00)

Water Pump Impeller Kit – Fits Yamaha 60-90 HP Outboards (Replaces 688-44352-03-00)

This water pump impeller kit is designed for a wide range of Yamaha 2-Stroke outboards, fitting 60 HP to 90 HP engines manufactured between 1984 and 2019. It also covers specific 115 HP and 200 HP models from 1992 to 1994.

This kit serves as a direct replacement for multiple OEM and aftermarket part numbers, ensuring broad compatibility. It is engineered to meet or exceed original equipment specifications for reliable cooling performance.

• Installation Type: Direct OEM replacement
• Primary Material: Durable Neoprene rubber compound
• Key Component: Includes one high-performance 6-blade impeller

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Yamaha owners, here’s a guide to help you identify your engine’s serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

Technical Specifications

Package Contents

This kit includes the following components:

• 1 x Impeller (Replaces 688-44352-03-00)

Installation Guide

1. Disconnect the negative battery cable and ensure the engine is off.
2. Shut off the fuel supply to the engine as a safety precaution.
3. Remove the gearcase (lower unit) by unfastening the mounting bolts.
4. Unscrew the bolts securing the water pump housing and remove the cover.
5. Note the rotational direction of the old impeller blades before removing it from the shaft.
6. Clean any debris or corrosion from the inside of the pump housing and wear plate.
7. Slide the new impeller onto the driveshaft, rotating it in the correct direction to flex the blades.
8. Reassemble the water pump with any new gaskets included in the kit.
9. Reinstall the lower unit onto the outboard leg and tighten all bolts to the manufacturer's torque specs.
10. Reconnect the battery, start the engine in water, and confirm a steady stream from the telltale outlet.

Troubleshooting & FAQ

How do I confirm this fits my engine?
Verify your engine's model and year against the compatibility chart. This impeller replaces OEM part number 688-44352-03-00. If you are unsure, use the official Yamaha guides to find your serial number and view parts diagrams to confirm the correct part.

What are the signs of a bad impeller?
The most common symptoms are engine overheating, a weak or non-existent water stream from the "telltale" indicator, and, upon inspection, visible cracks, stiffness, or missing blades on the impeller itself.

How often should I replace the water pump impeller?
For preventative maintenance, it is recommended to replace the impeller every 1 to 2 years or every 100-200 hours of operation. This interval may be shorter if the engine is used frequently in saltwater or sandy/silty conditions.

OEM vs. Aftermarket?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.