Water Pump Impeller – Fits Mercury/Mariner 2–6 HP Outboards (Replaces 47-16154, 369650211)
Water Pump Impeller – Fits Mercury/Mariner 2–6 HP Outboards (Replaces 47-16154, 369650211) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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Water Pump Impeller – Fits Mercury/Mariner 2–6 HP Outboards (Replac...
Water Pump Impeller – Fits Mercury/Mariner 2–6 HP Outboards (Replaces 47-16154, 369650211) is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket Water Pump Impeller – Fits Mercury/Mariner 2–6 HP Outboards is a direct replacement for small horsepower engines. It is designed for Mercury/Mariner 2-stroke models (2–6 HP) from 1987–2006 and 4-stroke models (2–6 HP) from 1999–2006, ensuring reliable cooling performance.
This impeller provides a direct interchange for Mercury part numbers 47-16154, 47-16154-3, 47-8M0204676, 369650211, and Sierra 18-3098.
- Installs directly onto the drive shaft with the included pin.
- Molded from durable neoprene rubber for a long service life.
- Package includes the impeller and required mounting pin.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury | 47-16154 |
| Mercury | 47-16154-3 |
| Mercury | 47-8M0204676 |
| Mercury | 369650211 |
| Sierra | 18-3098 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
Mercury/Mariner 2-Stroke Outboards
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury | 0T884302 - UP | 2 | 2-Stroke | 1987–2006 | 47-16154 | |
| Mercury | 0G710613 - UP | 3 | 2-Stroke | 1993–2006 | 47-16154 | |
| Mercury | 0G710613 - 0T894438 | 4 | 2-Stroke | 1987–2006 | 47-16154 | |
| Mercury | 0T894439 - UP | 4 | 2-Stroke | 1987–2006 | 47-16154 | |
| Mercury | 0P017000 - 0P400999 | 4 | 2-Stroke | 1987–2006 | 47-16154 | |
| Mercury | 0P401000 - UP | 4 | 2-Stroke | 1987–2006 | 47-16154 | |
| Mercury | 0G710613 - 0T894438 | 5 | 2-Stroke | 1987–2006 | 47-16154 | |
| Mercury | 0T894439 - UP | 5 | 2-Stroke | 1987–2006 | 47-16154 | |
| Mercury | 0P017000 - 0P400999 | 5 | 2-Stroke | 1987–2006 | 47-16154 | |
| Mercury | 0P401000 - UP | 5 | 2-Stroke | 1987–2006 | 47-16154 | |
| Mariner | 3.3 HP w/shift | 3.3 | 2-Stroke | 1993–2006 | 47-16154 | S/N 0D901217 & UP |
| Mariner | (1 CYL) | 4 | 2-Stroke | 1987–2006 | 47-16154 | S/N 0A809601 & UP |
| Mariner | (1 CYL) | 5 | 2-Stroke | 1987–2006 | 47-16154 | S/N 0A809601 & UP |
Mercury/Mariner 4-Stroke Outboards
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury | (Carb) 0R131842 - UP | 2 | 4-Stroke | 1999–2006 | 47-16154 | |
| Mercury | (Carb) 0R131842 - UP | 2.5 | 4-Stroke | 1999–2006 | 47-16154 | |
| Mercury | (Carb) 0R131842 - UP | 3.5 | 4-Stroke | 1999–2006 | 47-16154 | |
| Mercury | 0P073456 - UP | 4 | 4-Stroke | 1999–2006 | 47-16154 | |
| Mercury | 0P073456 - UP | 5 | 4-Stroke | 1999–2006 | 47-16154 | |
| Mercury | 0P073456 - UP | 6 | 4-Stroke | 1999–2006 | 47-16154 | |
| Mariner | 2.5 | 4-Stroke | 1999–2006 | 47-16154 | S/N 0R411838 & UP | |
| Mariner | 3.5 | 4-Stroke | 1999–2006 | 47-16154 | S/N 0R411838 & UP | |
| Mariner | 4 | 4-Stroke | 1999–2006 | 47-16154 | S/N 0R411838 & UP | |
| Mariner | 5 | 4-Stroke | 1999–2006 | 47-16154 | S/N 0R411838 & UP | |
| Mariner | 6 | 4-Stroke | 1999–2006 | 47-16154 | S/N 0R411838 & UP |
Technical Specs
- Product Type
- Water Pump Impeller
- Installation
- Direct fit with included pin
- Connection
- Shaft mounted
- Housing Material
- Neoprene rubber
- Housing Color
- Black
- Dimensions
- Overall Diameter: 33.8 mm (1.33 in)
Internal Shaft Diameter: 10.4 mm (0.41 in)
Height: 14.2 mm (0.56 in) - Weight
- 7.9 g (0.28 oz)
- Fitting Type
- Direct drive shaft mount
- Other Technical Attributes
- Includes mounting pin (369-65022-0)
What’s in the Box
- 1 x Impeller (47-16154)
- 1 x Pin (369-65022-0)
Installation Notes
- Disconnect the spark plug leads and battery to prevent accidental starting.
- Place the outboard gear selector in neutral.
- Remove the lower unit (gearcase) from the engine. Consult your service manual for specific bolt locations.
- Unbolt and remove the water pump housing to access the impeller.
- Note the old impeller's vane orientation, then slide it off the drive shaft, removing the drive key.
- Wipe the housing and wear plate clean and inspect for grooves or damage. Replace if worn.
- Lightly grease the new drive key and insert it into the shaft.
- Slide the new impeller onto the drive shaft, rotating it clockwise to pre-bend the vanes.
- Apply a thin layer of marine grease or soap to the inside of the housing.
- Reinstall the water pump housing and torque the bolts to the manufacturer’s specification.
- Reattach the lower unit and test the engine in water to verify proper cooling function.
Troubleshooting & FAQ
How do I know if this impeller fits my engine?
The best method is to confirm your engine's model and serial number against the compatibility tables above. If your engine is listed, this part is a direct fit. Always double-check part numbers and physical dimensions against your old part before installing.
What are the signs of a failing water pump impeller?
Common signs include the engine overheating at idle or low speeds, a weak or non-existent stream of water from the "telltale" outlet, and visible cracks or stiffness in the old impeller's rubber vanes upon inspection.
How often should I replace the impeller?
As a best practice, impellers should be inspected annually and replaced every 1 to 2 years, depending on usage (hours) and water conditions (salt vs. fresh, sandy/silty vs. clear). Proactive replacement prevents overheating and engine damage.
Is the included pin necessary for installation?
Yes, the small pin acts as a drive key, locking the impeller to the drive shaft so it spins correctly. Do not install the impeller without it.
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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