Water Pump Impeller for Yamaha 4–6 HP Outboards – Replaces 6E0-44352-00
Water Pump Impeller for Yamaha 4–6 HP Outboards – Replaces 6E0-44352-00 is backordered and will ship as soon as it is back in stock.
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Water Pump Impeller for Yamaha 4–6 HP Outboards – Replaces 6E0-4435...
Water Pump Impeller for Yamaha 4–6 HP Outboards – Replaces 6E0-44352-00 is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket water pump impeller is designed for specified Yamaha 4–6 HP outboards, including selected 2-stroke 4A, 4B, and 5C models and 4-stroke F4A, F4B, F5A, and F6C models. It is also listed for Mariner 4A and 5C 2-stroke applications. Always compare your original impeller and OEM part number before ordering.
The impeller is a direct replacement reference for Yamaha 6E0-44352-00 and 6E0-44352-00-00. Additional aftermarket reference numbers include Sierra 18-3073, Mallory 9-45611, GLM 89860, and Mercury Marine 47-96305M.
- Replacement water pump impeller for selected small Yamaha and Mariner outboards.
- Six-blade design for the specified water pump application.
- Manufactured to the listed replacement dimensions for proper pump fit and cooling-system operation.
- Sold as a single impeller; confirm all required installation hardware against your original water pump assembly.
Part Number Matrix
Use the following numbers as cross-reference information only. Confirm the exact engine model and water pump configuration before installation.
| Brand | Part Number | Reference Type |
|---|---|---|
| Yamaha | 6E0-44352-00 | OEM reference |
| Yamaha | 6E0-44352-00-00 | OEM reference |
| Mercury Marine | 47-96305M | Aftermarket/OEM cross-reference |
| Sierra | 18-3073 | Aftermarket reference |
| Mallory | 9-45611 | Aftermarket reference |
| GLM | 89860 | Aftermarket reference |
Engine & Model Compatibility
The company fitment records identify the following applications. Model, horsepower, and stroke conditions should be treated together; do not rely on horsepower alone.
| Brand | Model | Rated HP | Stroke | OEM Reference |
|---|---|---|---|---|
| Yamaha | 4A, 4B | 4 | 2-Stroke | 6E0-44352-00 |
| Yamaha | 5C | 5 | 2-Stroke | 6E0-44352-00 |
| Mariner | 4A | 4 | 2-Stroke | 47-96305M |
| Mariner | 5C | 5 | 2-Stroke | 47-96305M |
| Yamaha | F4A, F4B | 4 | 4-Stroke | 6E0-44352-00-00 |
| Yamaha | F5A | 5 | 4-Stroke | 6E0-44352-00-00 |
| Yamaha | F6C | 6 | 4-Stroke | 6E0-44352-00-00 |
Technical Specs
- Product Type
- Water pump impeller
- Product Configuration
- Single impeller
- Material
- Rubber impeller
- Outside Diameter
- 1.540 in
- Bore Diameter
- 0.415 in
- Thickness
- 0.485 in
- Key Dimension Reference
- 0.155 in
- Number of Blades
- 6
What’s in the Box
- 1 x Water pump impeller
Installation Notes
- Disconnect the spark plug wire(s), place the outboard in neutral, and follow the service manual safety instructions.
- Remove the lower unit from the driveshaft housing according to the engine manufacturer’s procedure.
- Remove the water pump housing cover and expose the existing impeller.
- Before removal, note the impeller blade orientation and inspect the keyway, pump housing, wear plate, gaskets, and related hardware.
- Remove the old impeller and clean the mating surfaces. Replace worn gaskets or damaged pump components as required.
- Install the impeller using the correct key or drive pin for your specific engine. Do not reuse damaged hardware.
- Apply a light water-compatible lubricant or soap-and-water solution to the impeller and pump housing to prevent damage during initial rotation. Avoid starting the engine dry.
- Reinstall the pump housing and related components, tightening fasteners to the manufacturer’s specified torque.
- Reattach the lower unit and test the engine in water. Confirm a steady tell-tale stream and monitor for overheating.
Troubleshooting & FAQ
How do I know if my impeller needs replacing?
Common signs include a weak or missing tell-tale stream, overheating, reduced cooling-water flow, or visible cracking, stiffness, melting, or damaged blades. An impeller should also be inspected when the water pump is serviced.
Does this listing include a key, gasket, or complete water pump kit?
No. This product is listed as a single water pump impeller. The box contents do not identify a key, gasket, housing, wear plate, or complete repair kit. Check your original assembly and obtain any additional parts required for your specific engine separately.
Will this fit my engine if the model is not listed?
Do not assume fitment. Confirm the complete engine model, horsepower, stroke, year or serial range when applicable, and OEM part number. The listed references are not a substitute for checking the exact water pump configuration.
Is lubrication needed during installation?
Use a light water-compatible lubricant or soap-and-water solution during installation to help protect the blades during initial rotation. Never operate the engine without an adequate water supply.
Is this an OEM part?
This listing is for an aftermarket replacement impeller, not a Yamaha or Mercury branded OEM component. The displayed OEM and aftermarket numbers are reference numbers used for identification and compatibility checking.
Safety & Important Information
- Verify the original impeller dimensions, blade count, keyway, and part number before purchase.
- Keep the Yamaha 2-stroke and 4-stroke model conditions separate when confirming fitment.
- Replace damaged pump components and gaskets as needed; a worn housing or wear plate can affect cooling performance.
- Do not run the outboard dry. Test the cooling system in water or with the manufacturer-approved flushing equipment.
- Professional installation is recommended if you are unfamiliar with lower-unit or water-pump service.
About Sea Sierra
- Marine Replacement Parts — Practical replacement components for common outboard maintenance needs.
- Application-Focused Listings — Fitment information is organized by engine brand, model, horsepower, and stroke.
- Clear Cross-References — OEM and aftermarket reference numbers are provided to support careful part identification.
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