Yamaha 2-Stroke Water Pump Repair Kit Without Housing – 150, P150, 175, 200 & 225 HP (1982–1991)
Yamaha 2-Stroke Water Pump Repair Kit Without Housing – 150, P150, 175, 200 & 225 HP (1982–1991) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Yamaha 2-Stroke Water Pump Repair Kit Without Housing – 150, P150, ...
Yamaha 2-Stroke Water Pump Repair Kit Without Housing – 150, P150, 175, 200 & 225 HP (1982–1991) 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 2-Stroke outboard engines rated at 150, P150, 175, 200, and 225 HP from model years 1982–1991. It is intended for water pump service and cooling-system maintenance when the existing water pump housing is suitable for reuse.
This product is supplied without a water pump housing. Confirm the engine model, year, existing housing condition, and reference number before ordering.
- Water pump service kit for Yamaha 2-Stroke outboards.
- Designed for service applications where the original housing is retained.
- Aftermarket replacement, not a Yamaha genuine part.
Reference Numbers
The company catalog identifies the following reference numbers for this product:
| Reference Type | Number |
|---|---|
| Yamaha OEM reference | 6G5-W0078-A3 |
| Aftermarket reference | 18-3310 |
Reference numbers are provided for identification only. They do not replace verification of the complete engine model and year.
Engine Compatibility
The company fitment range covers the following Yamaha 2-Stroke outboard applications:
| Brand | Stroke | Rated Horsepower | Model Years | Housing |
|---|---|---|---|---|
| Yamaha Outboard | 2-Stroke | 150, P150, 175, 200, 225 HP | 1982–1991 | Not included; reuse the existing housing if serviceable |
Yamaha model designations and lower-unit configurations can vary within the same horsepower range. Check the engine identification label and compare the existing water pump assembly before installation.
Technical Specifications
- Product Type
- Water pump repair kit
- Application
- Yamaha 2-Stroke outboard engines
- Horsepower Range
- 150, P150, 175, 200, and 225 HP
- Applicable Years
- 1982–1991
- Housing
- Not included
- Product Status
- Aftermarket replacement
What's in the Box
This listing is for a water pump repair kit supplied without the water pump housing. The existing housing is not included and must be inspected for wear, scoring, corrosion, or other damage before reuse.
Component configuration and quantities may vary by application. Compare the kit with the original water pump assembly and confirm the required service parts before installation.
Installation Notes
- Confirm the engine model, horsepower, year, and reference number before beginning work.
- Disconnect the battery and follow the engine manufacturer's safety procedures.
- Remove the lower unit according to the appropriate Yamaha service procedure.
- Remove the existing water pump components and carefully inspect the housing, wear surfaces, fasteners, and mating surfaces.
- Do not reuse a housing that is cracked, deeply scored, excessively corroded, or otherwise outside serviceable condition.
- Clean old gasket material and debris from all mating surfaces.
- Install the repair-kit components in the correct orientation and lubricate or seal them only as specified by the service manual.
- Reinstall the lower unit using the manufacturer's torque specifications.
- Run the engine only in an appropriate water source or with the correct flushing equipment, then verify a steady cooling-water tell-tale stream and normal operating temperature.
Professional installation is recommended. Always use the service manual for the specific engine model.
Troubleshooting & FAQ
Does this kit include the water pump housing?
No. The company product specification identifies this as a water pump repair kit without housing. The original housing must be reused only if it is confirmed to be serviceable.
Which Yamaha engines does this kit fit?
The listed application is for Yamaha 2-Stroke outboards rated at 150, P150, 175, 200, and 225 HP from 1982 through 1991. Verify the exact model and year before ordering.
Is this a genuine Yamaha part?
No. This is an aftermarket replacement water pump repair kit. The Yamaha reference number is supplied only to help identify the application.
What indicates that the water pump needs service?
Possible symptoms include a weak or missing tell-tale stream, overheating, an overheating alarm, or abnormal operating temperature. Stop operation and investigate the cooling system promptly if these symptoms occur.
Can I reuse the original housing?
Only after inspection. Replace the housing if it is cracked, warped, heavily corroded, or has wear grooves or scoring that could prevent proper water-pump operation.
Safety & Important Information
- Verify the complete engine model, year, horsepower, and reference number before purchase.
- This repair kit does not include a water pump housing.
- Do not operate an outboard without an adequate cooling-water supply.
- Follow the specific Yamaha service manual for removal, installation, sealant use, and torque specifications.
- This is an aftermarket replacement and is not manufactured or branded by Yamaha.
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