Water Pump Impeller Kit compatible with Yamaha CV25, CV30
Includes impeller, gaskets, wear plate, insert cup, and mounting hardware for a full cooling system overhaul. Replaces part numbers 689-W0078-A6 and Sierra 18-3426.
Key facts
- Part type
- Water Pump Impeller Kit
- Type
- Aftermarket replacement
Compatibility matrix
Only models verified by our team are listed| Parts for | Model | This part |
|---|---|---|
| Yamaha | Yamaha CV25 | Fits |
| Yamaha CV30 | Fits |
Only the models listed above have a confirmed catalog fit. If yours is absent, compatibility is unknown, not ruled out. Compare the exact model identifier and any published dimensions or connectors before ordering.
Where to find your model number
- Yamaha: Usually on the rating label under or on the back of the device. Your owner's manual also lists the model number.
General manufacturer guidance: exact label position can vary by model.
Water Pump Impeller Kit specifications
- Impeller
- 689-44352-02
- Impeller Key
- 63V-44338-00-00
- Water Pump Gasket
- 689-44316-A0-00
- Wear Plate
- 689-44323-03-00
- Insert Cup
- 689-44352-02-00
- Water Pump Housing
- 689-44311-03-00
Installation guide - Installing a parts kit
General guidance for this part type - always follow your device manual- As needed for the individual parts
- Photograph each step as you take things apart; it makes reassembly much easier.
- 1Switch off and unplug. Power the device down and disconnect it.
- 2Check the contents. Lay out the kit and compare it with the pack list on this page.
- 3Replace one part at a time. Swap each part completely before starting the next, so nothing gets mixed up.
- 4Keep the old parts. Hold on to them until the device runs normally with the new ones.
- 5Test. Run a short cycle and listen for unusual noise before regular use.
This is general guidance for the part type, not a model-specific procedure. If the part does not fit without force, stop and recheck compatibility.
Maintenance check
Signs it's time to replace
- 01Engine overheats or temperature gauge swings
- 02Coolant leaking near the front of the engine
- 03Heater blows cold air
- 04Whining or grinding noise from the pump area
12 month warranty on every part
Every part we sell is covered for 12 months from delivery. If it fails in normal use, we replace it or refund you , claim it straight from your order page.
Customer reviews
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Questions & answers
+Which models does this water pump impeller kit fit?
Our team verified it for Yamaha CV25, Yamaha CV30. The full list is in the compatibility table above.
+How do I make sure it fits my exact model?
Find the model number on your device label and compare it with the table above. Our fit guarantee covers verified models.
+Is it hard to install?
Install difficulty: Advanced · mechanical experience needed. Step by step instructions are on this page.
+How fast will it arrive?
US orders arrive in 7 to 15 business days with free shipping. Other countries are shown at checkout.
+Is there a warranty?
Yes, a 12-month warranty is included, and you can extend it at checkout. Returns are accepted within 30 days.