Water Pump Repair Kit Without Housing – Yamaha 9.9/15 HP 2-Stroke and F9.9/T9.9/FT9.9 4-Stroke
Water Pump Repair Kit Without Housing – Yamaha 9.9/15 HP 2-Stroke and F9.9/T9.9/FT9.9 4-Stroke is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Water Pump Repair Kit Without Housing – Yamaha 9.9/15 HP 2-Stroke a...
Water Pump Repair Kit Without Housing – Yamaha 9.9/15 HP 2-Stroke and F9.9/T9.9/FT9.9 4-Stroke is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket water pump repair kit without housing is designed for selected Yamaha outboard water-pump service applications. It is listed for Yamaha 9.9 HP and 15 HP 2-stroke outboards from 1982–1995, plus selected Yamaha F9.9, T9.9, and FT9.9 4-stroke applications from 1982–1996 and 2004–2005.
The kit is intended to renew the serviceable water-pump components while reusing the existing pump housing when it remains suitable for service. The water pump housing is not included.
- Aftermarket water pump repair/service kit for selected Yamaha outboards.
- Designed for listed 9.9 HP and 15 HP applications with the applicable 2-stroke or 4-stroke configuration.
- Supplied without the water pump housing.
- Confirm the complete engine model and year before ordering; horsepower alone is not sufficient for fitment.
Part Number References
Use the following references when comparing the existing part and service-kit application.
| Reference Type | Part Number |
|---|---|
| Yamaha OEM reference | 682-W0078-A3 |
| Aftermarket reference | 18-3148 |
Reference numbers identify the application or replacement relationship supplied for this listing. They do not indicate that the product is manufactured by Yamaha or Sierra.
Engine & Model Compatibility
Keep the engine model, horsepower, stroke, and year together when checking fitment. The following application ranges are based on the product records for this listing.
| Brand | Model Family | Rated HP | Stroke | Years | Application Notes |
|---|---|---|---|---|---|
| Yamaha | Selected 9.9 and 15 HP outboards | 9.9 / 15 HP | 2-Stroke | 1982–1995 | Use the exact engine model and year to confirm compatibility. |
| Yamaha | F9.9, T9.9, FT9.9 | 9.9 HP | 4-Stroke | 1982–1996 | Selected applications within this model family. |
| Yamaha | F9.9, T9.9, FT9.9 | 9.9 HP | 4-Stroke | 2004–2005 | Selected applications within this model family. |
Technical Specifications
- Product Type
- Water pump repair/service kit
- Housing
- Not included; reuse the existing housing only if it is serviceable
- Application
- Selected Yamaha 9.9 HP and 15 HP outboards
- Stroke Coverage
- 2-stroke and selected 4-stroke applications as listed above
- Installation
- Water-pump service installation; follow the engine manufacturer’s service procedure
- Product Type
- Aftermarket replacement
What’s in the Box
- Water pump repair/service kit for the listed application
- Water pump housing is not included
Individual kit components and quantities should be checked against the product images and the water-pump arrangement on your engine before installation. Do not assume that a housing, complete water-pump assembly, or unrelated hardware is included.
Installation Notes
- Identify the exact engine model, year, horsepower, and stroke before beginning work.
- Disconnect the battery where applicable and follow the engine manufacturer’s safety instructions.
- Remove the lower unit according to the service manual for your specific outboard.
- Open the water-pump assembly and inspect the housing, plates, keyway, driveshaft, and mating surfaces for wear or damage.
- Remove the old service components and clean all mating surfaces thoroughly.
- Install the repair-kit components in the correct order and orientation specified by the engine service manual.
- Use an appropriate lubricant or installation aid only where permitted by the manufacturer’s procedure.
- Reassemble the water pump and tighten fasteners to the specified torque in the correct sequence.
- Reinstall the lower unit, ensuring correct alignment of the driveshaft and water tube.
- Run the engine in the water or with an appropriate flushing device and confirm a steady cooling-water tell-tale stream before normal operation.
Maintenance & Troubleshooting FAQ
How do I confirm this kit fits my engine?
Check the complete model designation, horsepower, stroke type, and model year against the compatibility information above. If any of these details differ, compare the existing water-pump part and service-manual reference before ordering.
Does this kit include the water pump housing?
No. This is a water pump repair/service kit supplied without the housing. The existing housing must be inspected and reused only when it is in suitable condition.
Can I use this kit on any Yamaha 9.9 or 15 HP outboard?
No. The listing covers selected Yamaha applications only. The model family, year, horsepower, and stroke must match the stated application range.
What are common signs of a worn water-pump service assembly?
Possible signs include a weak or intermittent tell-tale stream, overheating, an overheating alarm, steam, or reduced cooling performance. Stop the engine if overheating is suspected and inspect the cooling system before further operation.
Should the housing be replaced too?
Inspect the housing for scoring, distortion, corrosion, excessive wear, or damage. Replace it separately if it is not serviceable; this listing does not include a replacement housing.
Is this an OEM Yamaha part?
No. This is an aftermarket replacement kit. Yamaha part numbers are shown only as application and replacement references.
Safety & Important Information
- Verify the exact engine model, year, horsepower, and stroke before purchase and installation.
- Do not operate an outboard without confirming proper cooling-water flow.
- Inspect the existing housing and related water-pump parts before installing the kit.
- Use the manufacturer’s service manual for disassembly, torque values, sealing instructions, and reassembly procedure.
- Professional installation is recommended when the correct procedure or fitment is uncertain.
About Sea Sierra
- Marine Replacement Parts — We provide aftermarket service parts for maintenance and repair applications.
- Application-Focused Listings — Product information is organized around engine model, horsepower, stroke, and year conditions.
- Practical Service Support — Confirm fitment and inspect related components before installation for reliable results.
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