Water Pump Impeller – Fits Mercury/Mercruiser 40-250 HP (Replaces 47-43026Q02)
Water Pump Impeller – Fits Mercury/Mercruiser 40-250 HP (Replaces 47-43026Q02) is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
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).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Water Pump Impeller – Fits Mercury/Mercruiser 40-250 HP (Replaces 4...
Product Details
This high-performance Water Pump Impeller – Fits Mercury/Mercruiser 40-250 HP (Replaces 47-43026Q02) is engineered for a wide range of applications, including 40-60 HP 4-Stroke Bigfoot, 60 HP 3-Cylinder Bigfoot, 75-125 HP 3 & 4 Cylinder models, 75-115 HP 4-Stroke, V-200 DFI 3.0L, 135-300 HP Verado, V-225/250 3.0L, and Alpha One Gen II stern drives.
It serves as a direct cross-reference for Mercury/Quicksilver part number 47-43026Q02 and LRPM part number LRPM-47-43026Q02, ensuring a precise fit and reliable cooling performance.
- Installation: Designed for direct replacement of the original impeller.
- Material: Constructed from durable, marine-grade rubber/neoprene for longevity.
- Inclusions: The package contains one water pump impeller for a complete service.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury/Quicksilver | 47-43026Q02 |
| LRPM | LRPM-47-43026Q02 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This impeller fits a wide variety of Mercury outboards and Mercruiser stern drives. Please check your specific model and serial number range where applicable to ensure correct fitment.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Mercury | Bigfoot | 40-60 | 4-Stroke | 47-43026Q02 | - |
| Mercury | Bigfoot (3-cylinder) | 60 | 47-43026Q02 | - | |
| Mercury | Outboard | 75-125 | 3 & 4 Cylinder | 47-43026Q02 | USA A996142 & above and BEL 9483121 & above |
| Mercury | Outboard | 75-115 | 4-Stroke | 47-43026Q02 | - |
| Mercury | V-200 (3.0L) DFI | 200 | 47-43026Q02 | - | |
| Mercury | Verado | 135-300 | 47-43026Q02 | - | |
| Mercury | V-225/250 (3.0L) | 225-250 | 47-43026Q02 | - | |
| Mercruiser | Alpha One Gen II | - | - | 47-43026Q02 | Stern drives |
| Mercury | Optimax | 75-115 | 47-43026Q02 | - |
Technical Specs
- Product Type
- Water Pump Impeller
- Installation
- Direct replacement
- Housing Material
- Rubber/Neoprene
- Housing Color
- Black
- Dimensions
- Height: 2.5 in; Width: 12.0 in; Length: 17.0 in
- Weight
- 0.28 kg (0.62 lb)
- Warranty
- Standard manufacturer warranty
What’s in the Box
- 1 x Water Pump Impeller (Replaces 47-43026Q02)
Installation Notes
- Disconnect the battery and ensure the engine is off and cool.
- Place the outboard motor in a secure, upright position for service.
- Drain the gearcase oil from the lower unit.
- Remove the bolts securing the lower unit (gearcase) to the upper housing.
- Carefully lower the gearcase to access the water pump assembly.
- Unbolt and remove the water pump housing cover to expose the impeller.
- Remove the old impeller, noting the direction of the vanes.
- Clean the housing interior and inspect it for wear or damage. Apply a light coat of marine grease.
- Slide the new impeller into the housing while turning the driveshaft clockwise to bend the vanes correctly.
- Reinstall the water pump housing, gaskets, and bolts, tightening to the manufacturer's torque specs.
- Reassemble the lower unit to the engine, refill the gearcase oil, and reconnect the battery.
- Test the engine using a water supply (flushing muffs) to confirm proper water flow from the tell-tale outlet.
Troubleshooting & FAQ
How do I know if this impeller fits my specific engine?
The most reliable method is to match the OEM part number 47-43026Q02. While our compatibility table covers many models, always verify against your service manual or existing part number before ordering.
What are the common signs of a failing water pump impeller?
Key indicators include engine overheating at idle or low speeds, a weak or non-existent water stream from the "tell-tale" outlet, and a noticeably high engine temperature gauge reading.
How often should I replace my impeller?
As a preventative maintenance item, it is recommended to replace the impeller every 1-2 years or every 100-200 hours of operation, depending on usage conditions (e.g., saltwater vs. freshwater).
My engine model is listed, but the serial number range is different. Will it fit?
If a specific serial number range is noted for your engine model, it is a critical fitment factor. Parts can vary mid-production. This impeller is confirmed to fit the serial numbers listed; if yours is outside that range, it may not be compatible.
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.
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.
