Water Pump Repair Kit – Fits Yamaha Outboards F20A F25A F25D (Replaces 61N-W0078-11-00)
Water Pump Repair Kit – Fits Yamaha Outboards F20A F25A F25D (Replaces 61N-W0078-11-00) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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Water Pump Repair Kit – Fits Yamaha Outboards F20A F25A F25D (Repla...
Water Pump Repair Kit – Fits Yamaha Outboards F20A F25A F25D (Replaces 61N-W0078-11-00) is backordered and will ship as soon as it is back in stock.
Product Details
This Water Pump Repair Kit – Fits Yamaha F20A F25A F25D Outboards (Replaces 61N-W0078-11-00) provides all the essential components to restore your engine’s cooling system. It is designed for Yamaha 4-stroke outboard models, including the F20A (1998–2009), F25A (1998–2009), F25D (2009+), and C30 (1993–1997).
The kit serves as a direct interchange for Yamaha OEM part numbers 61N-W0078-10-00, 61N-W0078-11-00, 61N-W0078-13-00, and 61N-W0078-14-00, as well as the SOXAMarine equivalent 61NW0078.
- Engineered for direct-fit installation, matching OEM specifications.
- Features a durable neoprene impeller for reliable performance in marine environments.
- Comprehensive kit may include a fuel filter, oil filter, and thermostat for a complete service.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Yamaha | 61N-W0078-10-00 | Superseded part number. |
| Yamaha | 61N-W0078-11-00 | Primary superseded part number. |
| Yamaha | 61N-W0078-13-00 | Superseded part number. |
| Yamaha | 61N-W0078-14-00 | Latest OEM part number. |
| SOXAMarine | 61NW0078 | Aftermarket cross-reference. |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F20A | 20 | 4-Stroke | 1998–2009 | 61N-W0078-11-00 | Superseded by 61N-W0078-14-00 |
| Yamaha | F25A | 25 | 4-Stroke | 1998–2009 | 61N-W0078-11-00 | Superseded by 61N-W0078-14-00 |
| Yamaha | F25D | 25 | 4-Stroke | 2009+ | 61N-W0078-11-00 | Superseded by 61N-W0078-14-00 |
| Yamaha | C30 | 30 | 4-Stroke | 1993–1997 | 61N-W0078-11-00 | Superseded by 61N-W0078-14-00 |
Technical Specs
- Product Type
- Water Pump Repair Kit
- Installation
- Direct OEM Replacement
- Fuel Type
- Gasoline
- Housing Material
- Neoprene (Impeller)
- Weight
- 0.73 kg (1.6 lb)
- Fitting Type
- Direct Fit
- Other Technical Attributes
- 4-Stroke Specific Design
What’s in the Box
- 1 x Cartridge Insert (63V-44322-00-00)
- 1 x Water Seal Damper (6L2-44367-00-00)
- 1 x Impeller (63V-44352-01-00)
- 1 x Woodruff Key (664-44338-00-00)
- 1 x O-Ring (93210-49046-00)
- 1 x Cartridge Outer Plate (68T-44323-00-00)
- 2 x Dowel Pins (93604-10M03-00)
- 4 x Bolts (97095-08045-00)
- 2 x Plates (63V-44328-01-00)
- 1 x Fuel Filter (61N-24560-10)
- 1 x Oil Filter (5GH-13440-00)
- 1 x Thermostat (66M-12411-01)
Installation Notes
- Disconnect the battery and ensure the engine is cool before starting.
- Position the outboard in the tilted position and remove the propeller.
- Locate and unbolt the lower unit (gearcase) from the upper engine casing. Carefully separate the two halves.
- Remove the water pump housing cover to access the old impeller, plates, and seals.
- Clean all mating surfaces thoroughly, removing any old gasket material or debris.
- Install the new components from the kit in the reverse order of disassembly, ensuring the impeller vanes are oriented correctly.
- Apply a light coat of marine grease to the new impeller and inside the housing.
- Reassemble the water pump housing and torque bolts to manufacturer specifications.
- Reattach the lower unit, ensuring the driveshaft, shift shaft, and water tube are correctly aligned.
- Once assembled, reconnect the battery, start the engine in water, and verify a steady stream of water from the tell-tale outlet.
Troubleshooting & FAQ
How can I tell if my water pump is failing?
Common signs of a failing water pump include the engine overheating at idle or low speeds, a weak or non-existent water stream from the tell-tale (pee hole) outlet, and a dry, cracked, or deformed impeller upon inspection.
Is this kit compatible with my specific F25A model?
This repair kit is designed for Yamaha F25A models manufactured between 1998 and 2009. To ensure a perfect match, always compare the part numbers listed here with those specified in your engine's service manual.
What is the recommended replacement interval for the impeller?
For optimal reliability, we recommend inspecting the impeller annually and replacing it every 1-2 years or 100-200 hours of use. Intervals should be shorter if operating primarily in saltwater or silty/sandy conditions.
Does this aftermarket kit perform as well as the OEM version?
Absolutely. This kit is built to meet or exceed OEM specifications, using high-quality materials like a tough neoprene impeller to ensure reliable cooling performance and longevity under marine conditions.
Why does this kit include filters and a thermostat when some OEM kits don't?
Aftermarket kits often bundle additional maintenance components for convenience and value. While the a core water pump repair, the inclusion of items like the fuel filter, oil filter, and thermostat allows you to perform a more comprehensive service at the same time.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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