Water Pump Impeller with Key – Honda BF35–BF60 & Tohatsu BFTW60A/BT60A – Replaces 19210-ZV5-003
Water Pump Impeller with Key – Honda BF35–BF60 & Tohatsu BFTW60A/BT60A – Replaces 19210-ZV5-003 is backordered and will ship as soon as it is back in stock.
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Water Pump Impeller with Key – Honda BF35–BF60 & Tohatsu BFTW60...
Water Pump Impeller with Key – Honda BF35–BF60 & Tohatsu BFTW60A/BT60A – Replaces 19210-ZV5-003 is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket water pump impeller with key is designed for listed Honda 4-stroke outboards from 35 HP to 60 HP. This listing also identifies this part for Tohatsu applications listed as BFTW60A and BT60A. The impeller is a service replacement for the water pump and helps restore proper cooling-water circulation when the original impeller is worn or damaged.
The product corresponds to Honda OEM part number 19210-ZV5-003. Catalog references also identify Sierra Marine 18-3248 and Mallory Marine 9-45103 as aftermarket reference numbers. Verify the exact model, engine version, and original part number before ordering.
- Aftermarket water pump impeller supplied with the required key.
- Designed as a replacement for the listed Honda and Tohatsu applications.
- Supports reliable water-pump operation and engine cooling when correctly installed.
- Replace the impeller if the tell-tale stream is weak, intermittent, or absent, or if the existing impeller shows wear or damaged vanes.
Part Number Matrix
Use these references to compare the replacement with your original part and service information.
| Brand or Reference | Part Number | Reference Type |
|---|---|---|
| Honda | 19210-ZV5-003 | OEM reference |
| Sierra Marine | 18-3248 | Aftermarket reference |
| Mallory Marine | 9-45103 | Aftermarket reference |
| Tohatsu | HZV5-19210-003 | OEM reference |
Engine & Model Compatibility
Compatibility below is grouped by engine brand, horsepower, stroke, and model designation. Check the model label and service-manual part number before installation. Do not rely on horsepower alone.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Honda | BF35 | 35 HP | 4-Stroke | 19210-ZV5-003 | Verify the exact model version before ordering. |
| Honda | BF40 | 40 HP | 4-Stroke | 19210-ZV5-003 | Verify the exact model version before ordering. |
| Honda | BF45 | 45 HP | 4-Stroke | 19210-ZV5-003 | Verify the exact model version before ordering. |
| Honda | BF50 | 50 HP | 4-Stroke | 19210-ZV5-003 | Verify the exact model version before ordering. |
| Honda | BF60 | 60 HP | 4-Stroke | 19210-ZV5-003 | Verify the exact model version before ordering. |
| Tohatsu | BFTW60A / BT60A | 60 HP class | 4-Stroke | HZV5-19210-003 | Model designations shown as listed; confirm the engine label before ordering. |
Technical Specs
- Product Type
- Water Pump Impeller with Key
- Product Configuration
- Single impeller supplied with key; not a complete water-pump repair kit
- Application
- 4-stroke marine outboard water-pump service replacement
- Honda OEM Reference
- 19210-ZV5-003
- Tohatsu OEM Reference
- HZV5-19210-003
- Sierra Marine Reference
- 18-3248
- Mallory Marine Reference
- 9-45103
- Included Key
- Yes
What’s in the Box
- 1 x Aftermarket water pump impeller
- 1 x Impeller key
Gaskets, wear plates, pump housings, bolts, and other water-pump components are not included unless specifically shown or stated in the order details.
Installation Notes
- Confirm the engine model and replacement part number before beginning work.
- Disconnect the negative battery cable and follow the safety procedures in the engine service manual.
- Remove the lower unit or gearcase as specified by the manufacturer.
- Remove the water-pump housing and note the orientation of the existing impeller vanes.
- Remove the old impeller and key. Clean the pump housing and mating surfaces thoroughly.
- Inspect the housing, wear plate, keyway, and related components for scoring, corrosion, or damage. Replace damaged components as required.
- Install the supplied key in the driveshaft keyway and fit the new impeller over the key.
- Rotate the driveshaft in the manufacturer-specified direction while seating the pump housing so the vanes fold correctly.
- Use clean water or a suitable water-based assembly lubricant during installation. Do not start the engine without an adequate water supply.
- Reassemble the water pump and lower unit using the manufacturer’s specified torque values and procedures.
- Run the engine only with the correct flushing attachment or in water, then confirm a strong, steady tell-tale stream.
Troubleshooting & FAQ
How do I confirm that this impeller fits my Honda outboard?
Confirm that your engine is a listed Honda BF35, BF40, BF45, BF50, or BF60 4-stroke model and that the service information identifies Honda part number 19210-ZV5-003. Model designation, engine version, and part number should all match before installation.
Is this impeller supplied with a key?
Yes. The product is listed as a water pump impeller with key, and one impeller key is included with the single replacement impeller.
Does this listing include a complete water-pump kit?
No. This listing is for one replacement impeller and one key. The pump housing, gaskets, wear plate, bolts, and other components are not included unless specifically stated in the order details.
What are the signs of a failing water-pump impeller?
Common signs include a weak or missing tell-tale stream, an overheating warning, steam, or visible cracks, deformation, brittleness, or broken vanes when the impeller is inspected.
How often should an outboard impeller be replaced?
Inspect the impeller according to the engine manufacturer’s maintenance schedule and whenever cooling performance changes. Replacement intervals depend on operating hours, water conditions, storage, and the condition of the impeller.
Is this an OEM part?
No. This is an aftermarket replacement. Honda OEM part number 19210-ZV5-003, Tohatsu OEM reference HZV5-19210-003, Sierra reference 18-3248, and Mallory reference 9-45103 are provided only for identification and compatibility comparison.
What should I do if the fit or appearance differs from my original part?
Do not force installation. Compare the impeller, keyway, dimensions, and reference number with the original part and consult the engine service manual before proceeding.
Safety & Important Information
- Verify the complete engine model, stroke, model version, and original part number before purchase.
- Horsepower alone does not confirm compatibility.
- Do not operate the engine without an adequate water supply.
- Follow the manufacturer’s service procedures and torque specifications.
- Professional installation is recommended if you are not familiar with lower-unit or water-pump service.
- This is an aftermarket replacement, not a genuine OEM component.
About Sea Sierra
- Marine Replacement Parts — We provide aftermarket components for routine outboard maintenance and repair.
- Application-Focused Listings — Product references and compatibility details are provided to help customers compare their original parts.
- Installation-Conscious Support — Always verify the engine model and service-manual requirements before installation.
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