Water Pump Impeller Repair Kit for Mercury Verado 135–275 HP 4-Stroke Outboards – Replaces 47-43026Q06, 47-43026T11 and 47-8M0100526
Water Pump Impeller Repair Kit for Mercury Verado 135–275 HP 4-Stroke Outboards – Replaces 47-43026Q06, 47-43026T11 and 47-8M0100526 is backordered and will ship as soon as it is back in stock.
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Water Pump Impeller Repair Kit for Mercury Verado 135–275 HP 4-Stro...
Water Pump Impeller Repair Kit for Mercury Verado 135–275 HP 4-Stroke Outboards – Replaces 47-43026Q06, 47-43026T11 and 47-8M0100526 is backordered and will ship as soon as it is back in stock.
Product Details
This water pump impeller repair kit is designed for selected Mercury Verado 4-stroke outboards. It replaces the Mercury Marine references 47-43026Q06, 47-43026T11 and 47-8M0100526. The kit supplies the impeller, water-pump gaskets, plate, seal ring, water tube, grommet, drain gasket and O-rings required for the specified cooling-system service.
Catalog information identifies the matching aftermarket reference as 18-3265. This is a repair kit for the water-pump assembly, not a complete water-pump housing or gearcase assembly.
- For selected Mercury Verado 4-stroke outboards from 135 HP through 275 HP.
- Includes the listed cooling-system service components in the quantities shown below.
- Verify the exact engine model and serial-number range before ordering.
- Aftermarket replacement part; Mercury Marine references are provided for identification and cross-reference purposes.
Part Number Matrix
These references are associated with the same impeller repair-kit application in the available catalog data.
| Source | Reference | Relationship |
|---|---|---|
| Aftermarket catalog | 18-3265 | Impeller repair kit reference |
| Mercury Marine | 47-43026Q06 | Replaced reference |
| Mercury Marine | 47-43026T11 | Replaced reference |
| Mercury Marine | 47-8M0100526 | Replaced reference |
Engine Compatibility
The documented fitment is limited to the following Mercury Verado 4-stroke applications and serial-number ranges:
| Model | Rated HP | Stroke | Serial Number | Application |
|---|---|---|---|---|
| Verado 135 / 150 / 175 | 135–175 HP | 4-Stroke | 1B227000 and up | Mercury Verado outboard |
| Verado 200 / 225 | 200–225 HP | 4-Stroke | OT980000 and up | Mercury Verado outboard |
| Verado 250 / 275 | 250–275 HP | 4-Stroke | OT801000 and up | Mercury Verado outboard |
Important: Horsepower alone does not confirm compatibility. Check the complete model designation and serial number against the application requirements. The available documentation does not establish fitment for general Mercury or Mariner 2-stroke engines, other Mercury models outside the ranges above, or MerCruiser Alpha One Gen 1 or Gen 2 stern drives.
Technical Specifications
- Product Type
- Water pump impeller repair kit
- Application
- Mercury Verado 4-stroke outboard cooling system
- Documented Horsepower Range
- 135–275 HP
- Documented Stroke
- 4-Stroke
- Impeller Material
- Not specified in the available application record
- Aftermarket Reference
- 18-3265
- Mercury Marine References
- 47-43026Q06, 47-43026T11 and 47-8M0100526
What's in the Box
The documented kit contents are listed below. Component descriptions and quantities follow the catalog record for the impeller repair kit.
| Component | Quantity | Associated Original-Equipment Reference |
|---|---|---|
| Water tube | 1 | 23-29804 |
| Impeller | 1 | 47-89984 |
| Water pump gasket | 1 | 27-42631-1 |
| Grommet | 1 | 26-38970 |
| Drain gasket | 2 | 12-20260 and 12-19183 |
| Water-pump-base-to-gear-housing gasket | 1 | 27-85610 |
| Water pump gasket | 1 | 27-85608-1 |
| Water pump gasket | 1 | 27-85609-1 |
| Seal ring | 1 | 26-45577 |
| Plate | 1 | 32435 |
| O-ring | 1 | 25-30613 |
| O-ring | 1 | 25-33145 |
| O-ring | 1 | 25-30224 |
| O-ring | 1 | 25-90011 |
| Water pump gasket | 1 | 27-32438 |
| O-ring | 1 | 35-30271 |
Installation Notes
- Confirm the engine model and serial number before disassembly.
- Disconnect the battery and follow the engine manufacturer's service procedure.
- Remove the lower unit and gain access to the water-pump assembly.
- Remove the old impeller, gaskets, seals, plate and related components. Clean all mating surfaces.
- Install the replacement components in the same locations as the removed parts. Lubricate and orient the impeller according to the manufacturer's service instructions.
- Reassemble the water-pump housing and lower unit using the manufacturer's torque specifications.
- Run the engine only with an appropriate water supply and confirm proper cooling-water flow before returning it to service.
Installation should be performed by a qualified marine technician. Always use the service manual for the specific engine model.
Maintenance & Troubleshooting
What are common signs of an impeller problem?
Symptoms can include reduced cooling-water flow, an overheating warning, or an engine temperature that rises above normal. Stop the engine promptly if overheating is suspected and inspect the cooling system.
How can I confirm this kit fits my engine?
Match all three conditions: Mercury Verado model, 4-stroke configuration, and the serial-number range listed above. Do not use horsepower alone as the fitment test.
Does this kit fit a MerCruiser Alpha One drive?
The available documentation identifies this kit for selected Mercury Verado 4-stroke outboards. It does not establish fitment for MerCruiser Alpha One stern drives.
Is this an OEM Mercury Marine kit?
No. This is an aftermarket replacement kit. The Mercury Marine part numbers are shown only as documented replacement references.
Safety & Important Information
- Verify the model, stroke and complete serial number before purchase and installation.
- Do not rely on a broad horsepower range or a visual resemblance to confirm fitment.
- Inspect the kit contents before installation and compare the components with the parts removed from the engine.
- This listing is for an aftermarket water-pump impeller repair kit, not a complete water-pump housing assembly.
- Professional installation is recommended.
About Sea Sierra
- Marine Replacement Parts — We supply aftermarket components for routine marine maintenance and repair.
- Application-Focused Listings — Verify the model and serial-number details before ordering.
- Service Support — Use the engine manufacturer's service information for installation and torque specifications.
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