Water Pump Repair Kit for Yamaha F15C and F20 4-Stroke Outboards – Replaces 6AH-W0078-00-00
Water Pump Repair Kit for Yamaha F15C and F20 4-Stroke Outboards – Replaces 6AH-W0078-00-00 is backordered and will ship as soon as it is back in stock.
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Water Pump Repair Kit for Yamaha F15C and F20 4-Stroke Outboards – ...
Water Pump Repair Kit for Yamaha F15C and F20 4-Stroke Outboards – Replaces 6AH-W0078-00-00 is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket water pump repair kit is designed for selected Yamaha F15C and F20 four-stroke outboard applications. It is intended to restore water-pump service components and help maintain reliable cooling-water circulation when the original pump parts are worn.
The primary verified Yamaha reference for this application is 6AH-W0078-00-00. Yamaha parts catalogs identify this number as a water pump repair kit for multiple F15C and F20 four-stroke models. Always compare the model code, production year, serial-number range and existing part number before ordering.
- Aftermarket replacement for selected Yamaha water-pump repair-kit applications.
- Designed for compatible F15C and F20 four-stroke outboard configurations.
- Supports routine cooling-system maintenance and water-pump service.
- Confirm the exact application before installation; model families can use different pump components.
Part Number Matrix
The following reference is documented for the compatible Yamaha water-pump repair-kit application. It is provided for identification only and does not by itself confirm fitment for every engine configuration.
| Brand | Part Number | Part Description |
|---|---|---|
| Yamaha | 6AH-W0078-00-00 | Water pump repair kit |
Engine & Model Compatibility
The catalog records below show the referenced Yamaha water pump repair kit in selected 2007–2010 F15C and F20 four-stroke applications. The list is not a universal year-range guarantee. Check the complete model code and serial-number information on your engine before purchasing.
| Brand | Model | Rated HP | Stroke | Documented Year | OEM Part No. |
|---|---|---|---|---|---|
| Yamaha | F15CELH | 15 | 4-Stroke | 2007–2010 | 6AH-W0078-00-00 |
| Yamaha | F15CESH | 15 | 4-Stroke | 2007–2010 | 6AH-W0078-00-00 |
| Yamaha | F15CMLH | 15 | 4-Stroke | 2007–2010 | 6AH-W0078-00-00 |
| Yamaha | F15CMSH | 15 | 4-Stroke | 2007–2010 | 6AH-W0078-00-00 |
| Yamaha | F15CPLH | 15 | 4-Stroke | 2007–2010 | 6AH-W0078-00-00 |
| Yamaha | F20ELH | 20 | 4-Stroke | 2007–2010 | 6AH-W0078-00-00 |
| Yamaha | F20ELR | 20 | 4-Stroke | 2007–2010 | 6AH-W0078-00-00 |
| Yamaha | F20ESH | 20 | 4-Stroke | 2007–2010 | 6AH-W0078-00-00 |
| Yamaha | F20ESR | 20 | 4-Stroke | 2007–2010 | 6AH-W0078-00-00 |
| Yamaha | F20MLH | 20 | 4-Stroke | 2007–2010 | 6AH-W0078-00-00 |
| Yamaha | F20MSH | 20 | 4-Stroke | 2007–2010 | 6AH-W0078-00-00 |
| Yamaha | F20PLH | 20 | 4-Stroke | 2007–2010 | 6AH-W0078-00-00 |
| Yamaha | F20PLR | 20 | 4-Stroke | 2007–2010 | 6AH-W0078-00-00 |
Fitment note: Catalog coverage confirms representative applications, but not every shaft length, trim, market version or serial-number range. Do not rely on horsepower alone.
Technical Specs
- Product Type
- Water pump repair kit
- Application
- Selected Yamaha F15C and F20 4-stroke outboards
- Replacement Reference
- Yamaha 6AH-W0078-00-00
- Product Status
- Aftermarket replacement; not a Yamaha-branded OEM part
- Service Area
- Outboard water-pump and cooling-system maintenance
What’s in the Box
This listing is for one aftermarket water-pump repair kit. The exact component mix and packaging may vary by production batch. Confirm the supplied parts against the product photographs and your original pump assembly before installation.
- 1 x Aftermarket water-pump repair kit
Do not assume that a housing, impeller, seals, plates, key, bolts or other individual components are included unless they are shown in the current package or confirmed by the seller. The Yamaha reference above identifies the repair-kit application and does not establish the contents of this aftermarket package.
Installation Notes
- Disconnect the battery, turn the engine off and allow it to cool completely.
- Place the outboard securely in an appropriate service position.
- Remove the lower unit according to the engine manufacturer's service procedure, including disconnecting the shift linkage where applicable.
- Remove the water-pump cover and carefully note the order and orientation of the original components.
- Inspect the driveshaft, keyway, pump plate, housing, seals and related surfaces for wear, corrosion or damage.
- Clean the mating surfaces and install only the replacement components supplied with the kit.
- Install the impeller and pump cover in the correct orientation. Avoid running the impeller dry during assembly or testing.
- Tighten fasteners using the engine manufacturer's specified sequence and torque values. Do not substitute unverified hardware.
- Reinstall the lower unit and reconnect the shift linkage according to the service manual.
- Run the engine only in the water or with an approved flushing attachment, then verify a steady tell-tale stream and confirm that the engine does not overheat.
Professional installation is recommended if you are not familiar with lower-unit removal, shift-linkage adjustment or outboard cooling-system service.
Troubleshooting & FAQ
How do I know if this water pump kit will fit my engine?
Match the complete Yamaha model code, horsepower, four-stroke designation, production year and serial-number range. Then compare the existing water-pump reference with 6AH-W0078-00-00. Horsepower by itself is not sufficient to confirm fitment.
What are the signs of a worn or failing water pump impeller?
Common symptoms include overheating at idle or low speed, a weak or intermittent tell-tale stream, no visible cooling-water discharge, or damaged, cracked, brittle or missing impeller vanes.
How often should I replace the water-pump service parts?
Inspect the cooling system according to the engine manufacturer's maintenance schedule. Replacement timing depends on operating hours, storage conditions and exposure to salt, sand, silt or debris.
Is this OEM or aftermarket?
This listing is for an aftermarket replacement kit. The Yamaha part number is shown only as an application and cross-reference identifier; this product is not represented as a Yamaha-branded OEM component.
Are all components shown in the original water-pump diagram included?
No. A catalog diagram identifies the repair-kit application and does not define the contents of this aftermarket package. Check the current package contents before beginning the repair.
What should I do if the kit does not match my pump?
Do not force installation or modify the components. Stop and compare the engine model, year, serial range, existing part number and supplied parts with the listing information before contacting support.
Safety & Important Information
- Verify the full model code, year, serial-number range and existing part number before ordering.
- Never run an outboard without an adequate water supply.
- Do not operate the engine if the tell-tale stream is weak, intermittent or absent.
- This is an aftermarket replacement, not a Yamaha-branded OEM component.
- Follow the applicable Yamaha service manual for torque values, shift-linkage adjustment and cooling-system testing.
About Sea Sierra
- Marine replacement parts selected for practical maintenance and repair applications.
- Product information is presented with application references to help customers verify fitment.
- For the best result, compare the original part and engine identification before purchase.
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