Water Pump Impeller – Fits Honda 9.9HP/15HP (Replaces 19210-ZV4-013, 19210-ZV4-651)
Water Pump Impeller – Fits Honda 9.9HP/15HP (Replaces 19210-ZV4-013, 19210-ZV4-651) is backordered and will ship as soon as it is back in stock.
Worry-free returns
Worry-free returns
Shop with confidence. If you’re not completely satisfied, eligible items may be returned within the return window, provided they are unused and in original packaging.
If the return is due to our error or a defective item, we’ll make it right.
Please contact us before returning any item.
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.
International delivery times may vary due to customs processing.
Tracking information will be provided once your order ships.
Water Pump Impeller – Fits Honda 9.9HP/15HP (Replaces 19210-ZV4-013...
Water Pump Impeller – Fits Honda 9.9HP/15HP (Replaces 19210-ZV4-013, 19210-ZV4-651) is backordered and will ship as soon as it is back in stock.
Product Details
This replacement Water Pump Impeller – Fits Honda 9.9HP/15HP Outboards is designed for 4-Stroke BF9.9 and BF15 A-series models manufactured between 1997 and 2002. It is engineered from a durable blend of neoprene rubber and a corrosion-resistant brass hub to ensure reliable cooling performance.
It serves as a direct interchange for Honda OEM parts 19210-ZV4-013 (flat keyway) and 19210-ZV4-651 (normal keyway), as well as aftermarket equivalents from Sierra and GLM.
- Engineered for direct-fit installation.
- Constructed with high-quality neoprene and brass for longevity.
- Available with a flat or normal keyway to match your engine's requirements.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Honda | 19210-ZV4-013 | Flat Keyway |
| Honda | 19210-ZV4-651 | Normal Keyway |
| Sierra | 18-3246 | |
| Sierra | 18-3247 | |
| GLM | 91010 | |
| GLM | 91009 | |
| Aftermarket | 500328 | |
| Aftermarket | 9-45101 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Honda | BF9.9AH | 9.9 | 4-Stroke | Pre-1997 | 19210-ZV4-013 | Flat keyway |
| Honda | BF9.9AK | 9.9 | 4-Stroke | Pre-1997 | 19210-ZV4-013 | Flat keyway |
| Honda | BF9.9AM (Short Shaft) | 9.9 | 4-Stroke | 1997 | 19210-ZV4-013 | Only for Serial #BABS-1200001 through BABS-1200680, flat keyway |
| Honda | BF9.9AM (Long Shaft) | 9.9 | 4-Stroke | 1997 | 19210-ZV4-013 | Only for Serial #BABL-1200001 through BABL-1200827, flat keyway |
| Honda | BF9.9AW | 9.9 | 4-Stroke | 1997–2002 | 19210-ZV4-651 | Normal keyway |
| Honda | BF9.9B | 9.9 | 4-Stroke | 1997–2002 | 19210-ZV4-651 | Normal keyway |
| Honda | BF9.9AH/AX/B | 9.9 | 4-Stroke | 1997–2002 | 19210-ZV4-651 | Normal keyway |
| Honda | BF15AH | 15 | 4-Stroke | Pre-1997 | 19210-ZV4-013 | Flat keyway |
| Honda | BF15AK | 15 | 4-Stroke | Pre-1997 | 19210-ZV4-013 | Flat keyway |
| Honda | BF15AM (Short Shaft) | 15 | 4-Stroke | 1997 | 19210-ZV4-013 | Only for Serial #BAAS-1200001 through BAAS-1201182, flat keyway |
| Honda | BF15AM (Long Shaft) | 15 | 4-Stroke | 1997 | 19210-ZV4-013 | Only for Serial #BAAL-1200001 through BAAL-1201052, flat keyway |
| Honda | BF15AW | 15 | 4-Stroke | 1997–2002 | 19210-ZV4-651 | Normal keyway |
| Honda | BF15B | 15 | 4-Stroke | 1997–2002 | 19210-ZV4-651 | Normal keyway |
| Honda | BF15AH/AX/B | 15 | 4-Stroke | 1997–2002 | 19210-ZV4-651 | Normal keyway |
Technical Specs
- Product Type
- Water Pump Impeller
- Installation
- Direct replacement
- Material
- Neoprene and brass
- Dimensions
- Diameter: 41mm, Thickness: 27.55-28.55mm, Shaft: 13.15-14.10mm
- Keyway Type
- Available in flat keyway (19210-ZV4-013) or normal keyway (19210-ZV4-651)
- OEM Cross Reference
- Honda 19210-ZV4-013, Honda 19210-ZV4-651
- Aftermarket Cross Reference
- Sierra 18-3246, 18-3247, GLM 91010, 91009, 500328, 9-45101
What’s in the Box
- 1 x Water Pump Impeller (19210-ZV4-013 or 19210-ZV4-651)
Installation Notes
- Disconnect the negative battery cable before starting.
- Remove the bolts securing the lower unit (gearcase) to the engine.
- Carefully lower the gearcase to expose the water pump assembly on the driveshaft.
- Remove the water pump housing bolts and slide the housing off the driveshaft.
- Take note of the old impeller's orientation, then remove it and the drive key.
- Inspect the pump housing, wear plate, and seals for scoring or damage. Replace if necessary.
- Lightly grease the new impeller and the inside of the housing with marine grease.
- Install the new key and slide the new impeller onto the driveshaft.
- Align the impeller vanes with the housing and slide it down while turning the driveshaft clockwise.
- Reinstall the housing, reassemble the gearcase to the engine, and torque all bolts to specification.
- Reconnect the battery and test the engine in water to verify strong water flow from the telltale outlet.
Troubleshooting & FAQ
What's the difference between the 19210-ZV4-013 and 19210-ZV4-651 impellers?
The primary difference is the keyway type. Part 19210-ZV4-013 uses a flat keyway, common in pre-1997 and specific 1997 models. Part 19210-ZV4-651 uses a normal (or 'D-shaped') keyway, found in most 1997–2002 models. Please verify your exact model and serial number in our compatibility table.
How can I identify the correct impeller for my engine?
Check your engine's model and serial number. The compatibility table on this page lists the specific Honda models, years, and corresponding OEM part numbers. Pre-1997 models and certain 1997 serial number ranges use the flat keyway impeller (19210-ZV4-013), while later models use the normal keyway (19210-ZV4-651). When in doubt, visual comparison to your old part is recommended.
What are the signs of a failing water pump impeller?
Common symptoms include the engine overheating at idle or low speeds, a weak or intermittent water stream from the "telltale" outlet, or an alarm from the engine's temperature sensor. A dry, cracked, or brittle impeller should be replaced immediately, even if it has not failed completely.
How often should I replace my outboard's impeller?
For preventative maintenance, it is recommended to inspect the impeller annually and replace it every 1 to 2 years, or every 100-200 hours of use. Replacement intervals should be shorter for boats operated in saltwater or in water with heavy sediment.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
