Water Pump Repair Kit – Fits Yamaha 4HP, 5HP, 6HP 4-Stroke (Replaces 6EE-W0078-01-00)
Water Pump Repair Kit – Fits Yamaha 4HP, 5HP, 6HP 4-Stroke (Replaces 6EE-W0078-01-00) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
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Water Pump Repair Kit – Fits Yamaha 4HP, 5HP, 6HP 4-Stroke (Replace...
Water Pump Repair Kit – Fits Yamaha 4HP, 5HP, 6HP 4-Stroke (Replaces 6EE-W0078-01-00) is backordered and will ship as soon as it is back in stock.
Product Details
This Water Pump Repair Kit is designed for Yamaha 4-stroke outboard motors, including F4B, F5A, and F6C models from 2010 and newer. It contains all necessary components to rebuild the water pump, ensuring your engine’s cooling system functions reliably.
The kit serves as a direct replacement for Yamaha OEM part numbers 6BX-WG078-00, 6EE-W0078-00, 6EE-W0078-01-00, and 6EE-W0078-02-00.
- Engineered as a direct OEM-equivalent replacement for a perfect fit.
- Features a durable composite plastic housing with corrosion-resistant metal components.
- Includes a new impeller, housing, gaskets, and hardware for a complete overhaul.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Superseded By | Notes |
|---|---|---|---|
| Yamaha | 6EE-W0078-01-00 | 6EE-W0078-02-00 | Primary superseded part number. |
| Yamaha | 6EE-W0078-00-00 | 6EE-W0078-01-00 | |
| Yamaha | 6BX-WG078-00 | Interchangeable part number. |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This kit is specifically designed for select 4-stroke Yamaha outboard engines produced since 2010.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F4B | 4 | 4-Stroke | 2010 and newer | 6EE-W0078-01-00 | Superseded by 6EE-W0078-02-00 |
| Yamaha | F5A | 5 | 4-Stroke | 2010 and newer | 6EE-W0078-01-00 | Superseded by 6EE-W0078-02-00 |
| Yamaha | F6C | 6 | 4-Stroke | 2010 and newer | 6EE-W0078-01-00 | Superseded by 6EE-W0078-02-00 |
Technical Specs
- Product Type
- Water Pump Repair Kit
- Installation
- Direct OEM replacement
- Housing Material
- Composite/Plastic with metal components
- Weight
- 175 g (0.39 lb)
- Other Technical Attributes
- Complete kit with all components for water pump rebuild
What’s in the Box
- 1 x Water Pump Housing (6EE-G4311-00-00)
- 1 x Water Pump Gasket (6EE-G4315-00-00)
- 1 x Cartridge Insert (6BX-44322-00-00)
- 1 x Cartridge Outer Plate (6BX-44323-00-00)
- 1 x Water Seal Damper (67D-44366-00-00)
- 1 x Impeller (6E0-44352-00-00)
- 4 x Bolts (97080-06045-00)
- 2 x Dowel Pins (93604-18080-00)
Installation Notes
- Disconnect the battery and remove the engine cover.
- Drain the gearcase oil from the lower unit.
- Remove the bolts securing the lower unit (gearcase) to the engine’s midsection and carefully lower it.
- Unbolt and remove the old water pump housing to access the impeller and other components.
- Clean the mounting surfaces and inspect for any damage or corrosion.
- Install the new cartridge insert, outer plate, gasket, and impeller from the kit.
- Position the new water pump housing and secure it with the new bolts provided.
- Re-install the lower unit, ensuring the driveshaft and water tube align correctly.
- Refill the gearcase with fresh oil.
- Reconnect the battery and test the engine in water, confirming a steady stream 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 a weak or non-existent water stream from the "tell-tale" outlet, engine overheating alarms, or a noticeable decrease in engine performance. Inspect the impeller for brittle, cracked, or missing vanes.
How often should I replace my water pump impeller?
For preventative maintenance, it is recommended to inspect the impeller annually and replace it every 1-2 years or every 100-200 hours of operation, depending on usage conditions (e.g., saltwater vs. freshwater).
Will this kit fit a 2-stroke Yamaha engine?
No, this kit is specifically designed for the 4-stroke Yamaha models listed in the compatibility table (F4B, F5A, F6C from 2010 and newer). It is not compatible with 2-stroke engines.
Does this kit include everything I need for the job?
Yes, this is a complete rebuild kit that includes the water pump housing, impeller, gaskets, plates, and all necessary bolts and pins for a full replacement. No other parts are typically required.
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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