Aftermarket Water Pump Impeller with Key – Mercury Verado 200–275 HP 4-Stroke, Replaces 8M0100526 and 47-43026Q02
Aftermarket Water Pump Impeller with Key – Mercury Verado 200–275 HP 4-Stroke, Replaces 8M0100526 and 47-43026Q02 is backordered and will ship as soon as it is back in stock.
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Aftermarket Water Pump Impeller with Key – Mercury Verado 200–275 H...
Aftermarket Water Pump Impeller with Key – Mercury Verado 200–275 HP 4-Stroke, Replaces 8M0100526 and 47-43026Q02 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 selected Mercury Verado 4-stroke outboard applications. It is a high-volume, long-vane impeller intended to help maintain proper water circulation through the cooling system and replace a worn or damaged impeller.
The primary Mercury reference is 8M0100526. Related manufacturer and aftermarket references reported for this impeller include 47-43026Q02, 47-43026T2, 47-8M002570, 430261, 430262, 430264, 43026B2, 19210-ZW1-303, 19210-ZW1-003, 0775467, 18-3056, GLM 89630, and CEF 500301. Reference numbers are provided for identification; confirm the exact model, serial-number range, dimensions, and original part number before ordering.
- Aftermarket replacement water pump impeller.
- High-volume, long-vane design for applicable Mercury water pumps.
- Replacement drive key included as listed for this product.
- Helps restore cooling-water flow and reduce the risk of overheating caused by an aged or damaged impeller.
Part Number Matrix
The following references are supplied as identification and cross-reference information. A shared number does not by itself confirm fitment for every engine listed by a manufacturer or aftermarket brand.
| Brand or Source | Reference |
|---|---|
| Mercury | 8M0100526 |
| Mercury | 47-43026Q02 |
| Mercury | 47-43026T2 |
| Mercury | 47-8M002570 |
| Mercury | 430261 |
| Mercury | 430262 |
| Mercury | 430264 |
| Mercury | 43026B2 |
| Honda | 19210-ZW1-303 |
| Honda | 19210-ZW1-003 |
| Johnson/Evinrude | 0775467 |
| Sierra | 18-3056 |
| GLM | 89630 |
| CEF | 500301 |
Engine & Model Compatibility
Catalog records specifically identify reference 47-43026Q02 as an impeller for selected Mercury Verado 4-stroke outboards. The confirmed catalog applications below retain their model, horsepower, stroke, and serial-number conditions together.
| Brand | Model | Rated HP | Stroke | Reference | Serial or Application Condition |
|---|---|---|---|---|---|
| Mercury | 200 Verado, 6-cylinder | 200 | 4-Stroke | 47-43026Q02 | 1B517434 through 2B144122; selected gear-housing and driveshaft diagrams |
| Mercury | 200 Verado, 6-cylinder | 200 | 4-Stroke | 47-43026Q02 | 0P520553 through 2B144122; selected gear-housing and driveshaft diagrams |
| Mercury | 200 Pro Verado, 6-cylinder | 200 | 4-Stroke | 47-43026Q02 | 2B144123 and up |
| Mercury | 225 Verado, 6-cylinder | 225 | 4-Stroke | 47-43026Q02 | 1B517434 through 2B144122, or 0P520553 through 2B144122, depending on gear-housing configuration |
| Mercury | 225 Pro Verado, 6-cylinder | 225 | 4-Stroke | 47-43026Q02 | 2B144123 and up |
| Mercury | 250 Verado, 6-cylinder | 250 | 4-Stroke | 47-43026Q02 | 1B517434 through 2B144122, or 0P520553 through 2B144122, depending on gear-housing configuration |
| Mercury | 250 Pro Verado, 6-cylinder | 250 | 4-Stroke | 47-43026Q02 | 2B144123 and up |
| Mercury | 275 Verado, 6-cylinder | 275 | 4-Stroke | 47-43026Q02 | 1B517434 through 2B144122, or 0P520553 through 2B144122, depending on gear-housing configuration |
| Mercury | 275 Pro Verado, 6-cylinder | 275 | 4-Stroke | 47-43026Q02 | 2B144123 and up |
Other Mercury, Honda, Johnson/Evinrude, and sterndrive applications may use related references, but the available records do not establish one universal 30–300 HP fitment range. Always compare the original impeller, engine model, serial number, water-pump configuration, and dimensions before installation.
Technical Specifications
- Product Type
- Aftermarket water pump impeller with drive key
- Impeller Style
- High-volume, long-vane design
- Outside Diameter
- 3.50 in. approximately
- Inside Diameter
- 0.875 in. approximately
- Installation
- Replacement component; application-specific fitment verification required
- Reference Impeller
- 47-43026Q02
- Primary Reference
- 8M0100526
- Other Technical Attribute
- Replacement key included as listed
What's in the Box
- 1 x aftermarket water pump impeller
- 1 x drive key
Water-pump housing, wear plate, gaskets, seals, washers, and other service components are not included unless specifically stated above.
Installation Notes
- Disconnect the battery and follow the engine manufacturer's safety procedures.
- Remove the lower unit according to the service procedure for your exact engine and serial-number range.
- Remove the water-pump housing and inspect the housing, wear plate, keyway, seals, and related gaskets.
- Remove the old impeller and clean debris from the pump cavity.
- Install the supplied key and slide the impeller onto the driveshaft.
- Pre-load the vanes in the correct direction of driveshaft rotation while installing the pump housing. Do not force the housing over the vanes.
- Use an appropriate water-based lubricant or the lubricant specified by the engine manufacturer. Do not run a new impeller dry.
- Reassemble the water pump and lower unit using the manufacturer's specified torque values and replacement seals or gaskets where required.
- Reconnect the battery and test the engine with an adequate water supply. Confirm a strong telltale stream and monitor for overheating.
Troubleshooting & FAQ
How do I know if the impeller needs replacing?
Common signs include a weak or absent telltale stream, overheating warnings, reduced cooling-water flow, or cracked, brittle, deformed, or missing vanes during inspection.
Will this fit my exact engine?
Match the original part number, engine model, horsepower, stroke, serial-number range, water-pump configuration, and impeller dimensions. The compatibility table lists selected Mercury Verado applications rather than every possible application for the cross-reference numbers.
Is the drive key included?
Yes. This product is listed with one replacement drive key. Confirm that the supplied key matches the driveshaft keyway before installation.
Should I replace the wear plate, gaskets, or seals at the same time?
Inspect all related water-pump components whenever the impeller is replaced. Replace worn, scored, damaged, or hardened components as required by the engine manufacturer's service procedure. These additional components are not included unless listed in the package contents.
How often should an impeller be replaced?
Replacement timing depends on the engine manufacturer's schedule, operating hours, storage conditions, and exposure to saltwater or sediment. Inspect the impeller at the recommended service interval and replace it when wear or damage is found.
Can I run the engine dry after installation?
No. Never operate the engine without an adequate water supply. Dry running can damage the new impeller within seconds.
Is this an OEM component?
No. This is an aftermarket replacement. Manufacturer and aftermarket reference numbers are shown only to help identify potentially compatible applications.
Safety & Important Information
- Verify the original part number, dimensions, engine model, stroke, and complete serial-number range before ordering.
- Do not rely on horsepower alone to determine fitment.
- Inspect the pump housing, wear plate, keyway, seals, and gaskets during installation.
- Use the engine manufacturer's service manual for removal, torque, rotation, and testing procedures.
- Professional installation is recommended when the correct application or service procedure is uncertain.
About Sea Sierra
- Marine Replacement Parts — Practical aftermarket components for common service and repair needs.
- Application-Focused Information — Reference numbers and engine conditions are provided to support careful part verification.
- Value-Oriented Service — Replacement solutions for routine marine maintenance and repairs.
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