Water Pump Impeller Repair Kit for Yamaha 60–90 HP 2-Stroke Outboards – Replaces 692-W0078-02-00, 18-3371
Water Pump Impeller Repair Kit for Yamaha 60–90 HP 2-Stroke Outboards – Replaces 692-W0078-02-00, 18-3371 is backordered and will ship as soon as it is back in stock.
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Water Pump Impeller Repair Kit for Yamaha 60–90 HP 2-Stroke Outboar...
Water Pump Impeller Repair Kit for Yamaha 60–90 HP 2-Stroke Outboards – Replaces 692-W0078-02-00, 18-3371 is backordered and will ship as soon as it is back in stock.
Product Details
This Water Pump Impeller Repair Kit is designed for Yamaha 2-Stroke outboard engines from 60 to 90 HP, covering models from 1984 to 2009, including the C75, P75, E75, C80, C85, CV85, B90, and C90 series. The kit provides the listed water-pump components needed to service the cooling-water pump and help restore proper cooling performance.
It is listed as a replacement for Yamaha part numbers 692-W0078-02-00, 692-W0078-00-00, 692-W0078-A0-00, and 692-W0078-01-00, as well as Sierra 18-3371 and 18-3370. Confirm the part number, engine model, year, and serial-number range against your service manual before ordering.
- Aftermarket replacement for the listed Yamaha water-pump applications.
- Includes a metal water-pump housing and neoprene impeller.
- Includes gaskets, seals, plates, hardware, and the listed drive key for a complete water-pump service.
Part Number Matrix
Use this matrix to compare the listed OEM and aftermarket reference numbers.
| Brand | Part Number |
|---|---|
| Yamaha | 692-W0078-02-00 |
| Yamaha | 692-W0078-01-00 |
| Yamaha | 692-W0078-A0-00 |
| Yamaha | 692-W0078-00-00 |
| Sierra | 18-3371 |
| Sierra | 18-3370 |
Engine & Model Compatibility
Confirm the exact engine model, year, and serial-number range before installation. The table below reflects the listed applications and should be checked against the engine service documentation.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 60 | 60 | 2-Stroke | 2004–2005 | 692-W0078-02-00 | |
| Yamaha | 70 | 70 | 2-Stroke | 2004–2009 | 692-W0078-02-00 | |
| Yamaha | C75 | 75 | 2-Stroke | 1994–1999 | 692-W0078-02-00 | |
| Yamaha | P75 | 75 | 2-Stroke | 1996–1999 | 692-W0078-02-00 | |
| Yamaha | E75 | 75 | 2-Stroke | 1995–2000 | 692-W0078-02-00 | |
| Yamaha | 80 | 80 | 2-Stroke | 1997 | 692-W0078-02-00 | |
| Yamaha | C85 | 85 | 2-Stroke | 1991–1996 | 692-W0078-02-00 | |
| Yamaha | CV85 | 85 | 2-Stroke | 1989–1990 | 692-W0078-02-00 | |
| Yamaha | 90 | 90 | 2-Stroke | 1984–2009 | 692-W0078-02-00 | |
| Yamaha | B90 | 90 | 2-Stroke | 1997–1999 | 692-W0078-02-00 | |
| Yamaha | C90 | 90 | 2-Stroke | 1997–2001 | 692-W0078-02-00 |
Technical Specs
- Product Type
- Water pump impeller repair kit with housing
- Installation
- Replacement installation for the listed applications
- Housing Material
- Metal housing; neoprene impeller
- Housing Color
- Silver/metallic
- Weight
- 0.37 kg (0.8 lb)
- Function
- Outboard cooling-system water-pump service
- Brand Type
- Aftermarket replacement; not a Yamaha OEM component
What’s in the Box
- 1 × Water Pump Housing (688-44311-01-00)
- 1 × Water Pump Impeller (688-44352-03-00)
- 1 × Driveshaft Woodruff Key (90280-04M04-00)
- 1 × Cartridge Insert (688-44322-00-00)
- 1 × Cartridge Outer Plate (688-44323-00-00)
- 1 × Cartridge Gasket (688-44324-A0-00)
- 1 × Water Pump Gasket (688-44315-A0-00)
- 1 × Water Pump Gasket (688-44316-A0-00)
- 1 × O-Ring (93210-46044-00)
- 2 × Bolt with Washer (90119-08M16-00)
- 2 × Bolt with Washer (90119-08M13-00)
Installation Notes
- Disconnect the battery and shift the outboard into neutral.
- Drain the gearcase oil from the lower unit.
- Remove the bolts securing the lower unit and carefully detach it from the upper housing.
- Unbolt and remove the old water-pump housing assembly from the driveshaft.
- Clean the driveshaft and mounting surfaces, removing old gasket material, debris, and corrosion.
- Install the supplied woodruff key, impeller, gaskets, cartridge components, and housing. Ensure that the impeller vanes are oriented correctly.
- Lubricate the impeller and housing as appropriate for the engine manufacturer’s service procedure. Use gasket sealant only where specified by the service manual.
- Reinstall the lower unit, aligning the driveshaft, shift shaft, and water tube. Tighten all fasteners to the manufacturer’s specified torque.
- Refill the gearcase with the correct lubricant and check for proper water flow before returning the engine to service.
Troubleshooting & FAQ
How do I know if this kit fits my Yamaha engine?
Compare your engine’s exact model, year, horsepower, stroke, and serial-number range with the compatibility information above. Also verify the OEM reference number in your service manual. Model names alone may cover more than one configuration, so do not rely on horsepower alone.
What are the signs of a failing water-pump impeller?
Common symptoms include a weak or missing telltale stream, an overheating alarm, elevated operating temperature, or reduced cooling performance. A removed impeller may show cracked, brittle, distorted, or missing vanes.
How often should I replace the water-pump impeller?
Inspect and service the impeller according to the engine manufacturer’s maintenance schedule. Service intervals can be shorter for engines operated in saltwater or sandy, silty, or debris-filled water.
What is the benefit of a full kit versus just an impeller?
A complete water-pump kit allows the impeller, housing, cartridge components, gaskets, seals, and related hardware to be serviced together. Replacing worn supporting components can help restore proper sealing and water-pump performance.
Is this an OEM part?
No. This listing is for an aftermarket replacement kit that is listed for the referenced Yamaha and Sierra part numbers. It is not manufactured by Yamaha.
What should I verify before ordering?
Verify the exact engine model, year, stroke, serial-number range, OEM part number, and the components included in the package. Compare the original water-pump assembly with the product information before installation.
What are the warranty and return terms?
Warranty and return eligibility are governed by the applicable order and store policies. Contact support before installation if the supplied parts differ from the listing or from the intended application.
Safety & Important Info
- Verify the engine model, year, stroke, serial-number range, and part number before purchase.
- Compare the supplied components with the original assembly before installation.
- This is an aftermarket replacement kit, not an OEM Yamaha component.
- Follow the engine manufacturer’s service manual for disassembly, torque values, lubrication, sealant use, and testing.
- Professional installation is recommended if you are not experienced with outboard lower-unit service.
About Sea Sierra
- Pro-Grade Standards — We supply marine replacement parts selected for dependable service in real-world operating conditions.
- Global Fulfillment — Shipping availability and delivery estimates are shown at checkout for the destination and service selected.
- Manufacturer-Direct Value — We aim to provide practical replacement solutions with clear product information and application guidance.
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