Water Pump Impeller Repair Kit – Fits Yamaha F4/F5/F6 4-Stroke (Replaces 6BX-WG078-00-00)
Water Pump Impeller Repair Kit – Fits Yamaha F4/F5/F6 4-Stroke (Replaces 6BX-WG078-00-00) is backordered and will ship as soon as it is back in stock.
Worry-free returns
Worry-free returns
Shop with confidence. If you’re not completely satisfied, eligible items may be returned within the return window, provided they are unused and in original packaging.
If the return is due to our error or a defective item, we’ll make it right.
Please contact us before returning any item.
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.
International delivery times may vary due to customs processing.
Tracking information will be provided once your order ships.
Water Pump Impeller Repair Kit – Fits Yamaha F4/F5/F6 4-Stroke (Rep...
Water Pump Impeller Repair Kit – Fits Yamaha F4/F5/F6 4-Stroke (Replaces 6BX-WG078-00-00) is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket Water Pump Impeller Repair Kit is engineered to fit Yamaha 4-6 HP 4-Stroke outboard engines manufactured from 2010 and newer, including F4B, F4L, F4S, F5A, F5L, F5S, F6C, F6L, and F6S models. It provides all necessary components to restore your engine's cooling system for optimal performance and reliability.
It serves as a direct replacement for Yamaha OEM part numbers 6BX-WG078-00-00, 6EE-W0078-00-00, 6EE-W0078-01-00, and 6EE-W0078-02-00, as well as aftermarket part AM6EE-W0078-01.
- Designed for direct OEM replacement installation.
- Manufactured in an ISO9002 certified factory to meet or exceed original equipment specifications.
- Includes all essential gaskets, seals, plates, 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| Brand | Part Number | Superseded By | Notes |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 | 6BX-WG078-00-00 | 6EE-W0078-00-00 | Original part number. |
| Yamaha | 6EE-W0078-00-00 | 6EE-W0078-01-00 | First supersession. |
| Yamaha | 6EE-W0078-01-00 | 6EE-W0078-02-00 | Second supersession. |
| Yamaha | 6EE-W0078-02-00 | Current OEM part number. | |
| Aftermarket | AM6EE-W0078-01 | Common 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 | F4BMH | 4 | 4-Stroke | 2010 and newer | 6EE-W0078-00-00 | Kit superseded by 6EE-W0078-02-00 |
| Yamaha | F4LMH | 4 | 4-Stroke | 2010 and newer | 6EE-W0078-00-00 | Kit superseded by 6EE-W0078-02-00 |
| Yamaha | F4SMH | 4 | 4-Stroke | 2010 and newer | 6EE-W0078-00-00 | Kit superseded by 6EE-W0078-02-00 |
| Yamaha | F5AMH | 5 | 4-Stroke | 2010 and newer | 6EE-W0078-00-00 | Kit superseded by 6EE-W0078-02-00 |
| Yamaha | F5LMH | 5 | 4-Stroke | 2010 and newer | 6EE-W0078-00-00 | Kit superseded by 6EE-W0078-02-00 |
| Yamaha | F5SMH | 5 | 4-Stroke | 2010 and newer | 6EE-W0078-00-00 | Kit superseded by 6EE-W0078-02-00 |
| Yamaha | F6CMH | 6 | 4-Stroke | 2010 and newer | 6EE-W0078-00-00 | Kit superseded by 6EE-W0078-02-00 |
| Yamaha | F6LMH | 6 | 4-Stroke | 2010 and newer | 6EE-W0078-00-00 | Kit superseded by 6EE-W0078-02-00 |
| Yamaha | F6SMH | 6 | 4-Stroke | 2010 and newer | 6EE-W0078-00-00 | Kit superseded by 6EE-W0078-02-00 |
Technical Specs
- Product Type
- Water Pump Impeller Repair Kit
- Installation
- Direct OEM replacement
- Manufacturing
- Manufactured to OEM specifications in ISO9002 certified factory
What’s in the Box
This kit is based on the current OEM version 6EE-W0078-02-00 and includes:
- 1 x Gasket, Water Pump (60X-44315-A0-00)
- 1 x Outer Plate, Cartridge (60X-44323-00-00)
- 1 x Insert, Cartridge (61A-44322-02-00)
- 1 x Impeller (6E5-44352-01-00)
- 4 x Bolt, W/ Washer (90119-08M14-00)
- 1 x Key, Woodruff (90280-04M05-00)
- 1 x O-Ring (93210-37M67-00)
- 1 x O-Ring (93210-86M38-00)
- 2 x Pin, Dowel (93606-12019-00)
Installation Notes
- Disconnect the battery and remove the engine cowling.
- Shift the outboard into neutral and remove the lower unit mounting bolts.
- Carefully separate the lower unit (gearcase) from the upper section.
- Remove the bolts securing the water pump housing and slide it off the driveshaft.
- Remove the old impeller, gaskets, plates, and seals. Note their orientation.
- Thoroughly clean all mating surfaces, removing any old gasket material or corrosion.
- Install the new components from the kit in reverse order. Lightly grease the new impeller.
- Ensure the Woodruff key is properly seated and the impeller vanes are oriented correctly.
- Torque the water pump housing bolts to the manufacturer's specified values.
- Reinstall the lower unit, ensuring the driveshaft and water tube align correctly.
- Once assembled, test the engine in water to confirm a strong and steady tell-tale stream.
Troubleshooting & FAQ
What are the signs of a failing water pump impeller?
Common symptoms include a weak or non-existent water stream from the "tell-tale" outlet, engine overheating alerts, or the engine running hotter than usual, especially at low speeds or idle. Reduced engine performance can also be a sign.
How often should I replace my impeller?
For preventative maintenance, it is recommended to replace the impeller every 1-2 years or every 100-200 hours of operation. Replacement frequency should be increased if the engine is used in saltwater, sandy, or debris-heavy water.
Will this kit fit an F6 model from a year before 2010?
No, this kit is specifically designed for models from 2010 and newer. Using it on an older model may result in improper fitment and cooling system failure. Always verify your engine's part number or contact us if unsure.
What is the difference between the superseded part numbers?
Yamaha often updates parts over time for improvement or manufacturing changes. This kit (equivalent to 6EE-W0078-02-00) is the latest version. While it fits the same models, it may contain slightly different component part numbers than the original 6BX-WG078-00-00 kit but offers the same or better performance.
Is the Woodruff key included?
Yes, this comprehensive repair kit includes the Woodruff key required for seating the impeller on the driveshaft.
Do I need to use gasket sealant on the new gaskets?
Generally, the gaskets included are designed to create a seal without additional sealant. However, it is best practice to consult your specific engine's service manual for the manufacturer's official recommendation.
Is this an OEM part or an aftermarket one?
This listing is for an aftermarket replacement, not an OEM part. It is built to OEM-level specifications with comparable materials and manufactured in an ISO 9002 facility, with batch inspections for quality and consistency.
What are the shipping speed and cost?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free for most orders, with expedited options available at checkout where applicable.
What is the warranty and return policy?
This product is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition. See our policy page or reach out for instructions.
Safety & Important Info
- Verify images and specifications against your original part before purchasing. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement component, not an original equipment manufacturer (OEM) part.
- Professional installation is highly recommended for safety and optimal performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and rigorously tested for real-world conditions.
- Fast Global Fulfillment — We offer free standard delivery to most regions, with an average transit time of 5–15 days.
- Manufacturer-Direct Value — By working directly with manufacturers, we provide fair pricing without compromising on materials or quality control.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
