Water Pump Wear Plate for Yamaha F40G and F70A Outboards – Replaces 6CJ-44323-00
Water Pump Wear Plate for Yamaha F40G and F70A Outboards – Replaces 6CJ-44323-00 is backordered and will ship as soon as it is back in stock.
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Water Pump Wear Plate for Yamaha F40G and F70A Outboards – Replaces...
Water Pump Wear Plate for Yamaha F40G and F70A Outboards – Replaces 6CJ-44323-00 is backordered and will ship as soon as it is back in stock.
Product Details
This Water Pump Wear Plate is a replacement outer plate for the water pump assembly on specified Yamaha outboard engines. It provides the wear surface used by the impeller and helps maintain proper water-pump clearance and cooling-water flow.
This aftermarket replacement corresponds to Yamaha OEM part number 6CJ-44323-00.
- Single water pump wear plate
- Designed for specified Yamaha F40G and F70A outboard applications
- Replaces the listed OEM water pump wear plate reference
- Inspect the pump housing and mating surfaces before installation
Part Number Matrix
Use the following reference to compare the replacement with the part number identified for the water pump wear plate application.
| Brand | Part Number | Notes |
|---|---|---|
| Yamaha | 6CJ-44323-00 | OEM reference |
Engine & Model Compatibility
Confirm the complete model designation and the original part number before ordering. The catalog relationship identifies the following Yamaha applications for this wear plate reference.
| Brand | Model | OEM Part No. |
|---|---|---|
| Yamaha | F40G | 6CJ-44323-00 |
| Yamaha | F70A | 6CJ-44323-00 |
Technical Specs
- Component Type
- Water Pump Wear Plate
- Part Type
- Single replacement component
- OEM Part Number
- 6CJ-44323-00
- Application
- Specified Yamaha outboard water pump assemblies
- Confirmed Model Applications
- F40G and F70A
What's in the Box
- 1 × Water Pump Wear Plate
This listing is for the wear plate only. The impeller, gaskets, pump cover, key, fasteners, and other water-pump components are not included unless separately stated.
Installation Notes
- Disconnect the battery and follow the safety procedures in the applicable engine service manual.
- Remove the lower unit according to the engine service manual.
- Disassemble the water pump and remove the existing wear plate.
- Inspect the impeller, pump housing, cover, gaskets, seals, and related components for wear or damage.
- Clean the mating surfaces and remove debris or old gasket material.
- Install the replacement wear plate in the same orientation as the original component.
- Replace the impeller and gaskets or seals as required by their condition and the service procedure.
- Reassemble the water pump and lower unit using the service manual's torque specifications.
- Run the engine only with an appropriate water supply and verify a steady telltale stream before returning the boat to service.
Troubleshooting & FAQ
What does the wear plate do?
The wear plate provides a controlled wear surface inside the water pump assembly. It works with the impeller and pump housing to support proper pump clearance and water flow.
When should the wear plate be replaced?
Inspect the wear plate during water-pump service and replace it if it is scored, grooved, warped, corroded, or unevenly worn. Excessive wear can reduce pump performance.
Should I replace the impeller at the same time?
Inspect the impeller whenever the water pump is opened. If the blades are damaged, hardened, permanently bent, or otherwise worn, replace the impeller according to the engine service procedure.
Is this a complete water pump kit?
No. This is a single replacement wear plate. It does not include an impeller, gasket set, pump housing, key, fasteners, or other water-pump parts.
Which engines does this wear plate fit?
The documented applications for this part-number reference are Yamaha F40G and F70A models. Verify the exact model designation and the original part number before ordering.
Is this an OEM part?
No. This listing is for an aftermarket replacement wear plate identified for use with Yamaha OEM part number 6CJ-44323-00. Yamaha is a trademark of its respective owner.
What can cause premature wear?
Common causes include abrasive debris, corrosion, operating the pump dry, a damaged impeller, incorrect assembly, or a worn pump housing or cover.
Do I need professional installation?
Replacement requires lower-unit and water-pump disassembly. Use the correct service manual and torque specifications; professional installation is recommended if you are not familiar with outboard lower-unit service.
Safety & Important Info
- Verify the model designation, original part number, and component dimensions before ordering.
- Do not operate the engine without an appropriate water supply.
- Replace damaged gaskets and seals as required during reassembly.
- This is an aftermarket replacement component, not a Yamaha-branded OEM part.
About Sea Sierra
- Marine Replacement Parts — We provide replacement components for common marine maintenance and repair applications.
- Fitment-Focused Listings — Product references and model applications are presented to help you compare the part before ordering.
- Practical Maintenance Support — Inspect related components and follow the applicable service procedure whenever replacing a water-pump part.
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