Aftermarket Water Pump Impeller for Select Yamaha 2.5–3 HP Outboards – Replaces 6L5-44352-00-00
Aftermarket Water Pump Impeller for Select Yamaha 2.5–3 HP Outboards – Replaces 6L5-44352-00-00 is backordered and will ship as soon as it is back in stock.
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Aftermarket Water Pump Impeller for Select Yamaha 2.5–3 HP Outboard...
Aftermarket Water Pump Impeller for Select Yamaha 2.5–3 HP Outboards – Replaces 6L5-44352-00-00 is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket water pump impeller is intended for selected Yamaha 2.5–3 HP outboard applications. It is a replacement cooling-system component for engines using Yamaha reference 6L5-44352-00-00. Always confirm the complete engine model, year, serial range, and the part number shown in your service manual before ordering.
Catalog records identify Yamaha part number 6L5-44352-00-00 as an impeller used in selected 3 HP two-stroke outboards, including model families such as 3LG, 3SG, 3LF, 3SF, and 3LD. Additional aftermarket mapping associates this impeller reference with selected Yamaha F2.5A and F2.5B applications, but model-specific fitment should be verified against the exact engine identification before installation.
- Aftermarket replacement for a water pump impeller.
- Designed to restore water-pump cooling performance when the original impeller is worn or damaged.
- Use the part-number and engine-identity checks below to confirm suitability.
- Not manufactured by Yamaha and not an OEM Yamaha component.
Part Number Matrix
The following references are associated with this impeller application. Part-number interchange alone does not confirm fitment for every engine configuration.
| Brand | Part Number | Reference Type |
|---|---|---|
| Yamaha | 6L5-44352-00-00 | OEM reference |
| Sierra | 18-8911 | Aftermarket reference |
| CEF | 500322 | Aftermarket reference |
| Mallory | 9-45615 | Aftermarket reference |
Engine & Model Compatibility
Fitment depends on the complete model designation, production year, and serial range. The following applications are supported by catalog or product-reference records; they are not a substitute for checking the engine identification label and service manual.
| Brand | Model Family | Rated HP | Stroke | Documented Year or Range | OEM Reference | Fitment Note |
|---|---|---|---|---|---|---|
| Yamaha | 3LG | 3 | 2-Stroke | 1988 | 6L5-44352-00-00 | Catalog occurrence identifies the part as an impeller. |
| Yamaha | 3SG | 3 | 2-Stroke | 1988 | 6L5-44352-00-00 | Catalog occurrence identifies the part as an impeller. |
| Yamaha | 3LF | 3 | 2-Stroke | 1989 | 6L5-44352-00-00 | Catalog occurrence identifies the part as an impeller. |
| Yamaha | 3SF | 3 | 2-Stroke | 1989 | 6L5-44352-00-00 | Catalog occurrence identifies the part as an impeller. |
| Yamaha | 3LD | 3 | 2-Stroke | 1990 | 6L5-44352-00-00 | Catalog occurrence identifies the part as an impeller. |
| Yamaha | F2.5A / F2.5B | 2.5 | 4-Stroke | Verify exact year and serial range | 6L5-44352-00-00 | Application appears in aftermarket mapping; confirm before purchase. |
Technical Specs
- Product Type
- Water pump impeller
- Application
- Selected Yamaha 2.5–3 HP outboard cooling systems
- Installation
- Replacement installation in the water pump assembly
- Primary OEM Reference
- 6L5-44352-00-00
- Construction
- Aftermarket impeller; verify the replacement dimensions and hub configuration against the original part before installation.
- Brand Status
- Aftermarket replacement, not OEM Yamaha
What’s in the Box
- 1 x Water pump impeller
Other water-pump service parts, such as gaskets, seals, plates, keys, or housing components, are not included unless specifically shown in the product package or selected as a separate item.
Installation Notes
- Review the engine service manual and confirm the exact model, year, serial range, and impeller reference.
- Switch off the engine, disconnect the battery where applicable, and remove the engine cowling.
- Remove the lower unit according to the manufacturer’s procedure.
- Remove the water-pump cover and note the orientation of the existing impeller vanes and any drive key before removal.
- Remove the old impeller and inspect the pump housing, wear surfaces, key, seals, and gaskets for damage or wear.
- Clean the pump area and install the replacement impeller with the correct key and vane orientation.
- Reinstall the pump cover and lower unit using the service manual’s tightening sequence and specifications.
- Run the engine only in an appropriate test tank or in the water. Confirm a steady cooling-water tell-tale stream before normal operation.
Troubleshooting & FAQ
How do I confirm this impeller fits my exact engine?
Match the complete engine model, year, and serial range with your service manual or parts diagram. Also compare the original impeller’s outside diameter, height, hub, drive-key arrangement, and vane count. Do not rely on horsepower alone.
Which OEM reference is this impeller intended to replace?
The primary documented reference is Yamaha 6L5-44352-00-00. Sierra 18-8911, CEF 500322, and Mallory 9-45615 are associated aftermarket references. Confirm the reference against your engine documentation before ordering.
What are common signs of a worn water-pump impeller?
Common signs include a weak or missing tell-tale stream, overheating, an overheating warning, or visible cracking and brittleness when the impeller is removed. A damaged impeller should be replaced before continued operation.
How often should an outboard impeller be replaced?
Replacement intervals vary with engine use, storage, water conditions, and the manufacturer’s maintenance schedule. Inspect the impeller at the interval specified in your service manual, and inspect it sooner after running in sandy, silty, or salt water.
Is this an OEM Yamaha part?
No. This listing is for an aftermarket replacement impeller. Yamaha and other brand names and part numbers are used only to identify compatible references.
Safety & Important Information
- Verify the complete engine model, year, serial range, and part number before purchase.
- Do not operate an outboard without an adequate cooling-water supply.
- Inspect the pump housing, wear surfaces, drive key, seals, and gaskets during installation.
- Professional installation is recommended if you are not familiar with lower-unit or water-pump service.
- Product images and packaging may vary. The package contents are limited to the impeller unless additional items are expressly listed.
About Sea Sierra
- Marine Replacement Parts — We provide aftermarket components for routine marine maintenance and repair.
- Fitment-Focused Listings — Use the model and part-number information to compare your engine before ordering.
- Support for Installation Questions — Consult your engine service manual or contact support when model or serial-range details are uncertain.
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