Water Pump Impeller – Fits Mercury Marine & MerCruiser Alpha One Gen 2 (Replaces 47-43026T2)
Water Pump Impeller – Fits Mercury Marine & MerCruiser Alpha One Gen 2 (Replaces 47-43026T2) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Water Pump Impeller – Fits Mercury Marine & MerCruiser Alpha On...
Product Details
This Water Pump Impeller fits Mercury Marine 30-300 HP & MerCruiser Alpha One Gen 2 (Replaces 47-43026T2) and is a crucial component for maintaining proper engine cooling. It is designed for a wide range of Mercury Outboards (including Bigfoot models), MerCruiser Alpha One Gen 2 sterndrives, and select Chrysler/Force outboards from the 1990s to the present.
Engineered as a direct replacement part, this impeller interchanges with multiple OEM and aftermarket part numbers, including Mercury 47-43026T2, Sierra 18-3056, and GLM 89630, ensuring a precise fit and reliable performance.
- Installs as a direct replacement for the original OEM impeller.
- Constructed from durable, marine-grade CR rubber for longevity in saltwater and freshwater.
- Kit includes the impeller, drive key, and necessary replacement gaskets for a complete service.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury | 47-43026T2 |
| Mercury | 47-43026 |
| Mercury | 47-430262 |
| Mercury | 8M0025709 |
| Sierra | 18-3056 |
| GLM | 89630 |
| CEF Marine | 500301 |
| Mallory | 9-45307 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Mercury Marine outboards, this impeller fits a wide variety of 4-stroke models from 30 HP to 300 HP, including Bigfoot and Jet drive versions. Please verify your engine's serial number for correct fitment where noted.
For MerCruiser sterndrives, this part is compatible with Alpha One Generation 2 drives with serial numbers D494569 and above, as well as all Vazer models.
For Chrysler/Force outboards, it fits specific 75 HP, 90 HP, and 120 HP models manufactured between 1995 and 1999. Check your engine's serial number against the listed ranges.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury | 30/40/45/50/60 HP | 30-60 | 4-Stroke | Bigfoot Models | 47-43026T2 | |
| Mercury | 60 HP | 60 | 4-Stroke | 3 cyl Bigfoot D000750 & UP | 47-43026T2 | |
| Mercury | 65 HP | 65 | 4-Stroke | Jet 0D283222 & UP | 47-43026T2 | |
| Mercury | 70 HP | 70 | 4-Stroke | B110054 & UP | 47-43026T2 | |
| Mercury | 75 HP | 75 | 4-Stroke | 3 cyl A996142 & UP | 47-43026T2 | |
| Mercury | 75 HP | 75 | 4-Stroke | 4 stroke 0G960500 & UP | 47-43026T2 | |
| Mercury | 80 HP | 80 | 4-Stroke | 3 cyl A996142 & UP | 47-43026T2 | |
| Mercury | 80 HP | 80 | 4-Stroke | Jet 0D28322 & UP | 47-43026T2 | |
| Mercury | 90 HP | 90 | 4-Stroke | 3 cyl A996142 & UP | 47-43026T2 | |
| Mercury | 90 HP | 90 | 4-Stroke | 4 stroke 0G960500 & UP | 47-43026T2 | |
| Mercury | 100 HP | 100 | 4-Stroke | 4 cyl B209468 & UP | 47-43026T2 | |
| Mercury | 115 HP | 115 | 4-Stroke | 4 cyl B209468 & UP | 47-43026T2 | |
| Mercury | 125 HP | 125 | 4-Stroke | 4 cyl 0D283222 & UP | 47-43026T2 | |
| Mercury | 150 HP | 150 | 4-Stroke | EFI | 47-43026T2 | |
| Mercury | V200 (3.0L) | 200 | 4-Stroke | DFI 0G386496 & UP | 47-43026T2 | |
| Mercury | V225/V250 (3.0L) | 225-250 | 4-Stroke | 47-43026T2 | ||
| Mercury | V225 (3.0L) | 225 | 4-Stroke | Carb/EFI 0D280813 & UP | 47-43026T2 | |
| Mercury | V225 | 225 | 4-Stroke | DFI 0G590000 & UP | 47-43026T2 | |
| MerCruiser | Alpha One Gen 2 | S/N D494569 & Above | 47-43026T2 | |||
| MerCruiser | Vazer | All | 47-43026T2 | |||
| Force | 75 HP | 75 | 1999 (0E345000-0E369299) | 47-430262 | ||
| Force | 90 HP | 90 | 1995–1999 (0E093700-0E369299) | 47-430262 | ||
| Force | 120 HP | 120 | 1995–1999 (0E093700-0E369299) | 47-430262 |
Technical Specs
- Product Type
- Water Pump Impeller
- Installation
- Direct Replacement
- Connection
- Drive Shaft Key
- Housing Color
- Black
- Dimensions
- 88.0 mm diameter × 33.0 mm height (3.46 in × 1.30 in)
- Fitting Type
- 22.4 mm (0.88 in) Hub Shaft Diameter
- Other Technical Attributes
- 6 blades; Made of neoprene rubber/marine grade CR rubber
What’s in the Box
- 1 x Water Pump Impeller (47-43026T2)
- 1 x Impeller Key (28-43037)
- 2 x Gaskets (Seals)
Installation Notes
- Disconnect the negative battery cable before starting work.
- Remove the lower unit (gearcase) from the outboard or sterndrive leg.
- Locate and unbolt the water pump housing cover to expose the old impeller.
- Remove the old impeller, impeller key, gaskets, and wear plate. Note the direction the old impeller blades are bent.
- Thoroughly clean all mating surfaces and inspect the housing for wear or cracks.
- Place the new impeller key into the slot on the driveshaft.
- Slide the new impeller onto the shaft while turning the driveshaft clockwise to ensure the blades curve correctly inside the housing cup.
- Install the new gaskets and reassemble the pump housing, torquing bolts to manufacturer specifications.
- Reinstall the lower unit, ensuring the driveshaft and shift shaft align properly.
- Reconnect the battery, start the engine in water, and confirm a steady stream of water from the tell-tale outlet.
Troubleshooting & FAQ
How do I confirm this impeller fits my specific engine?
The best way to ensure compatibility is to match your existing part number to one listed in our Part Number Matrix. Additionally, check your engine's model, year, and serial number against our compatibility table. If you are unsure, contact us with your engine details before ordering.
What are the signs of a failing water pump impeller?
Common symptoms include the engine overheating at idle or low speeds, a weak or non-existent water stream from the "tell-tale" outlet, and a melted water pump housing. Failure to replace a worn impeller can lead to severe engine damage.
How often should I replace my impeller?
As a preventative maintenance item, most marine mechanics recommend replacing the impeller every one to two years or every 100-200 hours of use, whichever comes first. Refer to your engine's service manual for specific interval recommendations.
Why is my engine still overheating after replacing the impeller?
If overheating persists, check for blockages in the cooling water passages, a clogged tell-tale outlet, a faulty thermostat, or a worn-out water pump housing that the new impeller can't seal against properly. Ensure the impeller was installed with the blades bent in the correct rotational direction.
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.
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