Water Pump Impeller Kit – Fits Yamaha 2-Stroke 60-90 HP Outboards (Replaces 692-W0078-02-00)

Water Pump Impeller Kit – Fits Yamaha 2-Stroke 60-90 HP Outboards (Replaces 692-W0078-02-00)

This water pump repair kit provides a complete solution for servicing and restoring the cooling system on a wide range of Yamaha 2-stroke outboard motors from 60 HP to 90 HP. It is designed to meet or exceed OEM specifications for reliable performance in both salt and fresh water.

This kit directly replaces Yamaha part numbers 692-W0078-02-00, 692-W0078-00-00, 692-W0078-01-00, and 692-W0078-A0-00, as well as aftermarket equivalents from Sierra and GLM.

• Engine compatibility includes Yamaha 2-stroke models from 60 HP to 90 HP manufactured between 1984 and 2009.
• Installation is a direct replacement of the original water pump assembly.
• The kit includes a durable neoprene rubber impeller, stainless steel hardware, and non-asbestos gaskets for a complete overhaul.

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 comprehensive kit includes all necessary components for a full water pump service. The primary components are highlighted for your convenience.

• 1 x Water Pump Housing (688-44311-01-00)
• 1 x Water Pump Impeller (688-44352-03-00)
• 1 x Woodruff Key Driveshaft (90280-04M04-00)
• 1 x Cartridge Insert (688-44322-00-00)
• 1 x Cartridge Outer Plate (688-44323-00-00)
• 1 x Cartridge Gasket (688-44324-A0-00)
• 1 x Water Pump Gasket (688-44315-A0-00)
• 1 x Water Pump Gasket (688-44316-A0-00)
• 1 x O-Ring (93210-46044-00)
• 2 x Bolt With Washer (90119-08M16-00)
• 2 x Bolt With Washer (90119-08M13-00)

Installation Guide

Professional installation is recommended. The following are general steps for replacing the water pump assembly.

1. Disconnect the battery and remove the engine cover.
2. Shift the outboard into neutral.
3. Remove the bolts securing the lower unit (gearcase) to the upper casing and carefully lower it.
4. Unbolt and remove the old water pump housing to access the impeller.
5. Remove the old impeller, gaskets, wear plate, and any other components being replaced.
6. Clean all mating surfaces thoroughly, removing any old gasket material or corrosion.
7. Install the new gasket, wear plate, and cartridge insert.
8. Slide the new impeller onto the driveshaft, ensuring the Woodruff key is in place and turning the shaft clockwise to seat the vanes.
9. Install the new housing and gaskets, tightening the bolts to the manufacturer's specified torque.
10. Re-install the lower unit, ensuring the driveshaft and water tube align correctly.
11. Once secured, reconnect the battery, supply water to the engine using flushing muffs, and test for proper water flow from the tell-tale.

Troubleshooting & FAQ

How do I confirm this kit will fit my Yamaha engine?
First, check the "Compatible Engine Models" table on this page. Cross-reference your outboard's model, horsepower, and year range. Second, verify that your existing part number matches one of the numbers listed in the "Part Number Cross-Reference" section. Using both methods is the best way to ensure a correct fit.

What are the signs of a faulty water pump impeller?
Common symptoms include the engine overheating at idle or low speeds, a weak or non-existent water stream from the "tell-tale" outlet, or a melted water pump housing. Failure to replace a worn impeller can lead to severe engine damage.

How often should I replace my water pump impeller?
As a general maintenance rule, it is recommended to replace the impeller every 1-2 years or every 100-200 hours of use, whichever comes first. This interval can be shorter if you frequently operate in sandy, silty, or saltwater environments.

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.