Aftermarket Water Pump Impeller with Key for Honda Marine BF8D and BF9.9D, Short & Long Shaft – Replaces 19210-ZW9-013 and 19210-ZW9-003
Aftermarket Water Pump Impeller with Key for Honda Marine BF8D and BF9.9D, Short & Long Shaft – Replaces 19210-ZW9-013 and 19210-ZW9-003 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
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Aftermarket Water Pump Impeller with Key for Honda Marine BF8D and ...
Aftermarket Water Pump Impeller with Key for Honda Marine BF8D and BF9.9D, Short & Long Shaft – Replaces 19210-ZW9-013 and 19210-ZW9-003 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 Honda Marine BF8D and BF9.9D 4-stroke outboard engines with either short or long shafts. It replaces the impeller references Honda 19210-ZW9-013 and 19210-ZW9-003 and helps maintain proper cooling-water circulation through the outboard cooling system.
The package includes one impeller and one impeller key. The impeller is an aftermarket replacement, not a Honda OEM component. Sierra Marine reference 18-3100 is provided as an aftermarket cross-reference for the impeller.
- Replacement water pump impeller for specified Honda Marine BF8D and BF9.9D outboards.
- Includes the matching impeller key for installation.
- Suitable for both short- and long-shaft versions listed by the manufacturer.
- Inspect the original impeller, keyway, housing, wear plate, and related seals before installation.
Part Number Matrix
Use the references below to compare the replacement impeller with the original or aftermarket part being replaced.
| Brand or Reference Type | Part Number | Description |
|---|---|---|
| Honda OEM reference | 19210-ZW9-013 | Water pump impeller reference |
| Honda OEM reference | 19210-ZW9-003 | Water pump impeller reference |
| Sierra Marine aftermarket reference | 18-3100 | Impeller reference |
Engine & Model Compatibility
Confirm the complete engine model and shaft configuration before ordering. The manufacturer lists this product for the following Honda Marine applications:
| Brand | Model Family | Rated HP | Stroke | Shaft Configuration | OEM Reference |
|---|---|---|---|---|---|
| Honda Marine | BF8D | 8 HP | 4-Stroke | Short or long shaft | 19210-ZW9-013; 19210-ZW9-003 |
| Honda Marine | BF9.9D | 9.9 HP | 4-Stroke | Short or long shaft | 19210-ZW9-013; 19210-ZW9-003 |
Do not rely on horsepower alone when checking fitment. Verify the exact model designation, shaft configuration, original impeller dimensions, and keyway before installation.
Technical Specs
- Product Type
- Aftermarket water pump impeller with key
- Application
- Honda Marine BF8D and BF9.9D 4-stroke outboards
- Shaft Configuration
- Short shaft and long shaft applications listed above
- OEM References
- 19210-ZW9-013 and 19210-ZW9-003
- Aftermarket Reference
- Sierra Marine 18-3100
- Height
- 14.8 mm (0.58 in)
- Overall Diameter
- Approximately 45.4 mm (1.79 in)
- Hub Shaft Diameter
- Approximately 13.4 mm (0.53 in)
What’s in the Box
- 1 x Water pump impeller
- 1 x Impeller key
Installation Notes
- Disconnect the battery and remove the engine cover.
- Place the outboard in neutral and remove the propeller if required by the service procedure.
- Locate and disconnect the shift linkage as specified in the engine service manual.
- Remove the bolts securing the lower unit to the upper casing.
- Carefully lower the gearcase to access the water pump housing.
- Remove the water pump housing bolts and lift the housing to expose the old impeller.
- Remove the old impeller and key. Note the existing vane direction and inspect the keyway.
- Clean the housing and wear plate, checking for scoring, cracks, or excessive wear. Replace damaged components before reassembly.
- Install the supplied key and impeller. Orient the vanes in the same operating direction as the original impeller and follow the engine service manual for final assembly.
- Reinstall the water pump housing, gearcase, and shift linkage. Tighten fasteners to the manufacturer’s specified torque.
- After assembly, run the engine according to the service procedure and confirm a strong cooling-water telltale stream without overheating.
Troubleshooting & FAQ
How do I know if my water pump impeller is failing?
Common signs include a weak or missing telltale water stream, an overheating alarm, or elevated engine temperature. Stop operation and inspect the cooling system promptly to help prevent engine damage.
Which Honda engines does this impeller fit?
The manufacturer lists this product for Honda Marine BF8D and BF9.9D 4-stroke outboards with short or long shafts. Verify the exact model designation and original part before ordering.
Does this package include the impeller key?
Yes. This package includes one water pump impeller and one impeller key.
Does this package include a gasket or O-ring?
No. The package contents are one impeller and one impeller key. A water pump gasket, O-ring, or other service parts are not included unless specifically stated in the order details.
Is this an OEM Honda impeller?
No. This is an aftermarket replacement. It is listed to replace Honda OEM references 19210-ZW9-013 and 19210-ZW9-003, with Sierra Marine 18-3100 shown as an aftermarket reference.
How often should I replace the impeller?
Replacement intervals depend on operating hours, water conditions, storage, and the engine manufacturer’s maintenance schedule. Inspect the impeller regularly and replace it if the vanes are cracked, permanently set, damaged, or worn.
Is installation difficult?
Water pump service requires lower-unit removal and correct reassembly of the shift linkage and cooling system. Experienced owners may perform the work with the proper tools and service information; professional installation is recommended if you are unsure.
What should I verify before ordering?
Verify the engine brand, exact model, 4-stroke configuration, short- or long-shaft application, original impeller dimensions, keyway, and OEM reference. Do not rely on horsepower alone.
Shipping speed and cost?
We ship worldwide quickly. Typical transit is 5–15 days; standard shipping is free, and expedited options appear at checkout where available.
Warranty and returns?
Covered by a 1-year warranty against manufacturing defects under normal use. Returns are accepted within our standard window when the item is unused and in original condition. Contact support for instructions.
Safety & Important Info
- Verify the exact engine model, shaft configuration, original part number, and dimensions before ordering.
- This is an aftermarket replacement, not an OEM Honda component.
- Inspect the water pump housing, wear plate, keyway, gasket, and O-ring during service.
- Do not operate the outboard if the cooling-water telltale is weak or absent, or if the engine overheats.
- Professional installation is recommended when lower-unit removal or shift-linkage adjustment is unfamiliar.
About Sea Sierra
- Pro-Grade Standards — We supply marine replacement parts selected for dependable service in real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing with attention to fitment information and product consistency.
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