Water Pump Impeller Repair Kit for Mercury Verado 4-Stroke 135–275 HP – Replaces 47-43026Q06, 47-43026T11, 47-8M0100526
Water Pump Impeller Repair Kit for Mercury Verado 4-Stroke 135–275 HP – Replaces 47-43026Q06, 47-43026T11, 47-8M0100526 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 Repair Kit for Mercury Verado 4-Stroke 135–275 ...
Water Pump Impeller Repair Kit for Mercury Verado 4-Stroke 135–275 HP – Replaces 47-43026Q06, 47-43026T11, 47-8M0100526 is backordered and will ship as soon as it is back in stock.
Product Details
This Water Pump Impeller Repair Kit is an aftermarket cooling-system service kit for selected Mercury and Mariner 4-Stroke Verado outboards. It is intended for the Verado applications and serial-number ranges listed below, not as a universal fit for all Mercury, Mariner, or MerCruiser engines.
The kit replaces the following Mercury Marine reference numbers: 47-43026Q06, 47-43026T11, and 47-8M0100526. These references are used for identification and interchange purposes only; this listing is an aftermarket replacement and is not an OEM Mercury component.
- Designed for scheduled water-pump service on compatible Verado outboards.
- Helps renew the impeller and related sealing components in the cooling-water pump.
- Verify the complete engine model and serial number before ordering.
Part Number Matrix
Use the following references to compare the replacement kit with your original part and service documentation.
| Brand or Source | Reference | Role |
|---|---|---|
| Sierra | 18-3265 | Impeller repair kit reference |
| Mercury Marine | 47-43026Q06 | Replacement reference |
| Mercury Marine | 47-43026T11 | Replacement reference |
| Mercury Marine | 47-8M0100526 | Replacement reference |
Engine Compatibility
Catalog fitment is limited to the following Mercury and Mariner 4-Stroke Verado applications. The serial-number break must be confirmed before installation.
| Engine Family | Rated HP | Stroke | Serial Number Condition |
|---|---|---|---|
| Verado | 135, 150, 175 HP | 4-Stroke | 1B227000 and above |
| Verado | 200, 225 HP | 4-Stroke | OT980000 and above |
| Verado | 250, 275 HP | 4-Stroke | OT801000 and above |
Not confirmed for: MerCruiser Alpha One sterndrives, non-Verado outboards, 2-Stroke engines, or Verado engines outside the serial-number ranges shown above.
Technical Specifications
- Product Type
- Water pump impeller repair kit
- Application
- Selected Mercury and Mariner 4-Stroke Verado outboards
- Replacement References
- 47-43026Q06, 47-43026T11, and 47-8M0100526
- Brand Status
- Aftermarket replacement; not an OEM Mercury component
What's in the Box
The catalog-described repair-kit contents are listed below. Quantities are shown where identified in the catalog.
| Quantity | Component | Reference |
|---|---|---|
| 1 | Water tube | 23-29804 |
| 1 | Impeller | 47-89984 |
| 1 | Water pump gasket | 27-42631-1 |
| 1 | Grommet | 26-38970 |
| 2 | Drain gasket | 12-20260 and 12-19183 |
| 1 | Water pump base-to-gear-housing gasket | 27-85610 |
| 1 | Water pump gasket | 27-85608-1 |
| 1 | Water pump gasket | 27-85609-1 |
| 1 | Seal ring | 26-45577 |
| 1 | Plate | 32435 |
| 1 | O-ring | 25-30613 |
| 1 | O-ring | 25-33145 |
| 1 | O-ring | 25-30224 |
| 1 | O-ring | 25-90011 |
| 1 | Water pump gasket | 27-32438 |
| 1 | O-ring | 35-30271 |
Installation Notes
- Confirm the complete engine model and serial number before beginning work.
- Disconnect the battery and follow the engine manufacturer's service-manual safety procedures.
- Remove the lower unit and water-pump components according to the applicable Verado service procedure.
- Record the orientation of the original impeller and the location of each gasket, seal, plate, tube, grommet, and O-ring.
- Clean the pump surfaces and cooling-water passages before installing the replacement components.
- Install the impeller, plate, gaskets, seals, O-rings, water tube, and grommet in the correct service-manual order.
- Reassemble the water pump and lower unit using the manufacturer's specified torque values.
- Run the engine using the approved test procedure and confirm proper cooling-water flow before returning the boat to service.
Troubleshooting & FAQ
How do I confirm that this kit fits my engine?
Match the engine family, horsepower, 4-Stroke designation, and serial-number range to the compatibility table. Do not rely on horsepower alone. If your engine is not a Verado or falls outside the listed serial-number breaks, compatibility is not confirmed.
Does this kit fit MerCruiser Alpha One sterndrives?
No MerCruiser sterndrive fitment is confirmed for this kit. The documented application is for selected Mercury and Mariner 4-Stroke Verado outboards.
What are common signs of a worn water-pump impeller?
Symptoms may include weak tell-tale water flow, overheating warnings, elevated operating temperature, or steam from the exhaust. Stop operation and diagnose the cooling system promptly to avoid engine damage.
Should I replace the related seals and gaskets at the same time?
Yes. The repair kit is intended to renew the impeller together with the listed pump gaskets, seals, O-rings, plate, water tube, and grommet. Replace any additional worn or damaged pump-housing components identified during inspection.
Is this an OEM Mercury kit?
No. This is an aftermarket replacement kit that uses the listed Mercury reference numbers for identification and fitment comparison.
Safety & Important Information
- Confirm the engine model and serial number before purchase and installation.
- Use the manufacturer's service manual for disassembly, installation, clearances, and torque specifications.
- Do not operate an engine that shows overheating or inadequate cooling-water flow.
- Professional installation is recommended when lower-unit or water-pump service is unfamiliar.
About Sea Sierra
- Marine Service Parts — Replacement components for routine cooling-system maintenance.
- Fitment-Focused Listings — Product references and serial-number conditions are provided to support accurate part comparison.
- Aftermarket Value — Practical replacement solutions for compatible marine applications.
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.
