Water Pump Impeller Kit – Fits Mercury/Mariner 75-115HP EFI (Replaces 47-43026Q06, 8M0094529)
Water Pump Impeller Kit – Fits Mercury/Mariner 75-115HP EFI (Replaces 47-43026Q06, 8M0094529) is backordered and will ship as soon as it is back in stock.
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Water Pump Impeller Kit – Fits Mercury/Mariner 75-115HP EFI (Replac...
Water Pump Impeller Kit – Fits Mercury/Mariner 75-115HP EFI (Replaces 47-43026Q06, 8M0094529) is backordered and will ship as soon as it is back in stock.
Product Details
This Mercury Water Pump Impeller Kit is an essential service part for maintaining the cooling system of your outboard engine. It is designed for a precise fit on Mercury/Mariner 75-115HP 4-Stroke EFI outboards from 2000 to the present, and also fits select 150HP EFI 4-Stroke models.
It serves as a direct replacement for Mercury part numbers 47-43026Q06 and 8M0094529, as well as Sierra 18-3265, ensuring broad interchange compatibility.
- Engineered for direct OEM-level replacement and fitment.
- Constructed for durability and to ensure optimal cooling water flow.
- Includes the essential impeller and gaskets for a standard service.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Mercury | 47-43026Q06 | Superseded by 8M0094529 |
| Mercury | 8M0094529 | Current OEM part number |
| Mercury | 47-43026T2 | For MerCruiser Alpha One Gen II sterndrives |
| Sierra | 18-3265 | Aftermarket cross-reference |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Mercury / Mariner owners: Please verify your model and serial number range, as fitment for 150HP and Verado models is specific. This kit does not fit all 150HP EFI models.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury | 75-115 EFI | 75-115 | 4-Stroke | 2000–present | 8M0094529 | Supersedes 47-43026Q06 |
| Mercury | 150 EFI | 150 | 4-Stroke | Select models | 8M0094529 | Verado not included |
| Mercury | Verado L4 | 135-200 | 4-Stroke | Models with S/N 1B227000 & up | 47-43026Q06 | |
| Mercury | Verado L6 | 200-225 | 4-Stroke | Models with S/N 0T980000 & up | 47-43026Q06 | |
| Mercury | Verado L6 | 250-275 | 4-Stroke | Models with S/N 0T801000 & up | 47-43026Q06 | |
| Mercury | Alpha One Gen II | - | - | - | 47-43026T2 | MerCruiser sterndrive |
Technical Specs
- Product Type
- Water Pump Impeller Kit
- Installation
- Direct OEM replacement
- Housing Material
- Composite/rubber
- Housing Color
- Black
- Warranty
- Mercury/Quicksilver factory warranty
- Other Technical Attributes
- Engineered for durability and optimal cooling water flow
What’s in the Box
- 1 x Water Pump Impeller (47-43026Q06)
- 1 x Impeller Plate
- 1 x Water Pump Base Gasket
- 1 x Water Pump Upper Gasket
- 1 x Water Pump Gasket
Installation Notes
- Disconnect the battery and shift the control into neutral before beginning work.
- Remove the lower unit (gearcase) from the outboard by unbolting it from the midsection.
- Carefully remove the bolts securing the water pump housing and disassemble it, noting the order of all parts.
- Remove the old impeller, gaskets, and seals. Clean all mating surfaces thoroughly.
- Install the new gaskets and impeller. Ensure the impeller vanes are oriented correctly (typically by turning the driveshaft clockwise during installation).
- Reassemble the pump housing, apply sealant to bolt threads if required, and torque to manufacturer specifications.
- Reinstall the lower unit, ensuring the water tube and shift shaft are properly aligned.
- Once fully assembled, start the engine using a water source (flushing muffs) and verify a strong, steady stream from the tell-tale outlet.
Troubleshooting & FAQ
Will this kit fit my 150HP EFI Mercury outboard?
This kit fits select Mercury 150HP EFI 4-Stroke models but is not universal. It specifically excludes Verado models in this horsepower class. Always verify compatibility using your engine's serial number against the OEM part catalog before purchasing.
What is the difference between part numbers 47-43026Q06 and 8M0094529?
Part number 8M0094529 is the newer, updated version that supersedes 47-43026Q06. While both may be referenced for the same engines, 8M0094529 is the current Mercury factory part number for this kit.
How can I tell if my water pump impeller is failing?
Common signs include the engine overheating at idle or low speeds, a weak or non-existent water stream from the "tell-tale" outlet, or an abnormally high engine temperature reading on your gauge. Any of these symptoms warrant an immediate inspection.
How often should I replace my impeller?
As a general maintenance rule, it is recommended to replace the water pump impeller every 1 to 2 years, or every 100-200 hours of operation, whichever comes first. Usage in saltwater or sandy/silty conditions may require more frequent replacement.
Is this an OEM or aftermarket part?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility and batch-inspected for consistency.
What are your shipping speed and cost?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free for most regions; expedited options will appear at checkout where available.
What is the warranty and return policy?
This part is covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition. Please 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.
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