Water Pump Impeller Repair Kit – Fits Yamaha 60-90 HP Outboard Engines (Replaces 692-W0078-02-00)

Water Pump Impeller Repair Kit – Fits Yamaha 60-90 HP Outboard Engines (Replaces 692-W0078-02-00)

This water pump impeller repair kit provides a complete solution for servicing and restoring the cooling system on Yamaha 2-stroke outboard engines ranging from 60 to 90 HP. It's designed for models manufactured between 1984 and 2009, including C75, P75, E75, C80, C85, CV85, B90, and C90 models.

The kit serves as a direct replacement for multiple Yamaha and Sierra part numbers, ensuring wide compatibility and a precise fit. All components meet or exceed OEM specifications for reliable performance.

• Direct Installation: Engineered to replace the original assembly without modifications.
• Complete Kit: Includes a new metal housing, neoprene impeller, gaskets, plates, and all necessary hardware.
• Durable Materials: Features a robust metal housing and a durable neoprene impeller for longevity and consistent cooling performance.

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

• 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 steps provide a general overview for replacing the water pump assembly:

1. Safety First: Disconnect the battery and ensure the engine is securely mounted.
2. Drain Gear Lube: Place a drain pan under the lower unit and remove the drain and vent plugs to drain the gearcase lube.
3. Remove Lower Unit: Unbolt the lower unit from the engine's midsection. You may need to disconnect the speedometer tube and shift linkage.
4. Access the Water Pump: With the lower unit removed, locate the water pump housing on top of the gearcase.
5. Disassemble Old Pump: Remove the bolts securing the water pump housing. Slide the housing off the driveshaft to expose the impeller.
6. Remove Old Components: Remove the old impeller, woodruff key, gaskets, and wear plates. Note their orientation.
7. Clean Surfaces: Thoroughly clean all mating surfaces, removing any old gasket material or corrosion.
8. Install New Components: Install the new gaskets, wear plate, and insert cartridge from the kit.
9. Install New Impeller: Slide the new woodruff key into its slot on the driveshaft. Slide the new impeller on, turning the driveshaft clockwise to bend the vanes correctly.
10. Install New Housing: Apply a light coat of marine grease to the inside of the new housing and install it over the impeller. Secure it with the new bolts and washers.
11. Reassemble: Re-install the lower unit, ensuring the driveshaft, water tube, and shift shaft are aligned. Torque all bolts to factory specs.
12. Finalize: Refill the gearcase with fresh lube, reconnect the battery, and test the engine on a water supply, checking for a strong telltale stream.

Troubleshooting & FAQ

How do I confirm this fits my engine?
First, check the "Compatible Engine Models" table to see if your Yamaha model and year are listed. Second, compare your existing part number to the list in our "Part Number Cross-Reference" table to ensure it is a direct replacement.

What are the signs of a failing water pump impeller?
Common signs include the engine overheating, especially at idle, or a weak/non-existent water stream from the telltale outlet. During inspection, a worn impeller may appear brittle, cracked, or have fins that are permanently bent.

How often should I replace the water pump impeller?
As a critical maintenance item, the impeller should be inspected annually. We recommend replacing it every 1-2 years or every 100-200 hours of operation, whichever comes first, to prevent engine damage from overheating.

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.