Fuel Pump Assembly for Select Yamaha 9.9–15 HP and Mercury 8–15 HP 4-Stroke Outboards – Replaces Yamaha 66M-24410-11-00
Fuel Pump Assembly for Select Yamaha 9.9–15 HP and Mercury 8–15 HP 4-Stroke Outboards – Replaces Yamaha 66M-24410-11-00 is backordered and will ship as soon as it is back in stock.
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Fuel Pump Assembly for Select Yamaha 9.9–15 HP and Mercury 8–15 HP ...
Fuel Pump Assembly for Select Yamaha 9.9–15 HP and Mercury 8–15 HP 4-Stroke Outboards – Replaces Yamaha 66M-24410-11-00 is backordered and will ship as soon as it is back in stock.
Product Details
This fuel pump assembly is an aftermarket OEM-style replacement for select Yamaha 9.9 HP and 15 HP 4-stroke outboard engines and select Mercury 8 HP, 9.9 HP, 13.5 HP, and 15 HP 4-stroke outboards. Confirm the original fuel-pump part number, engine model, and serial-number range before ordering.
The assembly is listed as a replacement or cross-reference for Yamaha part numbers 66M-24410-00-00, 66M-24410-01-00, 66M-24410-10-00, and 66M-24410-11-00. Mercury references commonly associated with this application include 835389T1, 835389T02, and 835389A2. Part-number matching is the most reliable way to confirm compatibility.
- Direct OEM-style replacement for the specified applications.
- Designed for applicable 4-stroke outboard fuel systems.
- Includes the fuel pump assembly, hose clamp, and O-ring listed below.
- Not a genuine Yamaha or Mercury-branded component.
Part Number Matrix
Use the following references to compare the replacement with the part installed on your engine. A cross-reference alone does not replace model and serial-number verification.
| Brand | Part Number | Notes |
|---|---|---|
| Yamaha | 66M-24410-11-00 | Replacement reference |
| Yamaha | 66M-24410-10-00 | Earlier replacement reference |
| Yamaha | 66M-24410-01-00 | Earlier replacement reference |
| Yamaha | 66M-24410-00-00 | Earlier replacement reference |
| Mercury | 835389T1 | Cross-reference supplied for comparison |
| Mercury | 835389T02 | Fuel pump assembly reference |
| Mercury | 835389A2 | Cross-reference supplied for comparison |
| Sierra | 18-35302 | Aftermarket interchange reference |
| Mallory | 9-35302 | Aftermarket interchange reference |
Engine & Model Compatibility
Compatibility depends on the complete model designation and, for Mercury applications, the engine serial-number range. The catalog relationships below should be treated as application-specific references rather than a blanket fitment statement.
Yamaha: Cataloged applications include 2007 F9.9 and F15 4-stroke models. The part is shown in fuel-system diagrams as a fuel pump assembly. Verify the exact model designation before purchase.
| Brand | Model | Rated HP | Stroke | Year | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F9.9ELR2K | 9.9 | 4-Stroke | 2007 | 66M-24410-11-00 | Fuel pump assembly application |
| Yamaha | F9.9MLH2K | 9.9 | 4-Stroke | 2007 | 66M-24410-11-00 | Fuel pump assembly application |
| Yamaha | F9.9MSH2K | 9.9 | 4-Stroke | 2007 | 66M-24410-11-00 | Fuel pump assembly application |
| Yamaha | F15PLH | 15 | 4-Stroke | 2007 | 66M-24410-11-00 | Fuel pump assembly application |
| Yamaha | F15PLR | 15 | 4-Stroke | 2007 | 66M-24410-11-00 | Fuel pump assembly application |
| Yamaha | F15CELH, F15CESH, F15CMLH, F15CMSH, F15CPLH | 15 | 4-Stroke | 2007 | 66M-24410-11-00 | Confirm the exact model and installation configuration |
Mercury: The 835389T02 reference is cataloged for select 8 HP, 9.9 HP, 13.5 HP, and 15 HP 4-stroke engines. Mercury applications are separated by serial-number ranges, so do not rely on horsepower alone.
| Brand | Engine | Stroke | Serial or Application Range | OEM Part No. |
|---|---|---|---|---|
| Mercury | 8 HP Bodensee | 4-Stroke | 0P086824 through 0P400999 | 835389T02 |
| Mercury | 9.9 HP, 323 cc | 4-Stroke | 0G760300 through 1B226999 | 835389T02 |
| Mercury | 9.9 HP, 323 cc | 4-Stroke | 0P075166 through 0P400999 | 835389T02 |
| Mercury | 13.5 HP International | 4-Stroke | 0P134638 through 0P400999 | 835389T02 |
| Mercury | 15 HP | 4-Stroke | 9973100 through 0P016999 | 835389T02 |
| Mercury | 15 HP | 4-Stroke | 0G590000 through 0G760299 | 835389T02 |
| Mercury | 15 HP | 4-Stroke | 0G760300 through 1B226999 | 835389T02 |
| Mercury | 15 HP | 4-Stroke | 1B227000 through 1B727495 | 835389T02 |
| Mercury | 15 HP | 4-Stroke | 0P075166 through 0P400999 | 835389T02 |
| Mercury | 15 HP | 4-Stroke | 0P401000 and up | 835389T02 |
Important: The Yamaha T9.9 applications identified in the catalog are 2-stroke entries and are not included as 4-stroke fitments for this listing. Do not use the T9.9 model name alone to determine compatibility.
Technical Specs
- Product Type
- Fuel pump assembly
- Installation
- Direct OEM-style replacement
- Fuel Type
- Gasoline
- Connection
- Two hose-barb fittings
- Housing Material
- Plastic with metal top
- Housing Color
- Black with silver components
- Weight
- 0.21 kg (0.47 lb)
- Fitting Type
- Hose barb
- Application
- Select 4-stroke outboard fuel systems listed above
- Brand Status
- Aftermarket replacement; not a genuine Yamaha or Mercury component
What's in the Box
- 1 x Fuel pump assembly
- 1 x Hose clamp
- 1 x O-ring, approximately 2.65 x 20 mm
Installation Notes
- Disconnect the negative battery terminal to reduce electrical hazards.
- Relieve fuel-system pressure according to the engine service manual.
- Place an absorbent rag beneath the fuel pump to catch fuel spillage.
- Clamp or otherwise secure the fuel lines before disconnecting them from the pump.
- Remove the mounting hardware securing the original fuel pump assembly.
- Remove the old pump and clean the mounting surface without damaging it.
- Install the included O-ring and position the replacement fuel pump.
- Secure the pump with the original mounting hardware and tighten it to the manufacturer's specification.
- Reconnect the fuel lines and secure the applicable connection with the included hose clamp.
- Reconnect the battery, prime the fuel system, and inspect carefully for leaks before starting the engine.
Troubleshooting & FAQ
How do I know if my fuel pump is failing?
Possible symptoms include difficult starting, hesitation, bogging, sputtering at higher speed, stalling, or reduced engine power. These symptoms can also result from clogged filters, restricted fuel lines, contaminated fuel, or other fuel-system faults.
Is this a direct fit for my engine?
It is intended as an OEM-style replacement for the specific applications and reference numbers listed. Confirm your complete engine model and, where applicable, the serial-number range and original pump number before ordering.
Can this pump be used with ethanol-blended fuel?
Use only fuel approved by your engine manufacturer. If ethanol-blended fuel is permitted, follow the manufacturer's storage and maintenance recommendations and avoid fuel with ethanol concentrations above the approved limit.
What is the difference between the Yamaha part numbers listed?
The listed Yamaha numbers are earlier or replacement references associated with the same fuel-pump application. Match the number on your original component and verify the engine model before installation.
Can I use this pump on a Yamaha T9.9?
Do not assume compatibility from the T9.9 name alone. The cataloged T9.9 entries associated with this part are 2-stroke applications, while this listing is presented for the specified 4-stroke applications. Verify the exact model, stroke, and original part number.
Why are Mercury serial numbers important?
Mercury used different fuel-pump applications within the same horsepower range. The 835389T02 reference is cataloged across specific serial-number ranges, so horsepower alone is not sufficient for a reliable fitment decision.
Is this an OEM component?
No. This is an aftermarket replacement designed to match the listed OEM-style applications. Yamaha and Mercury are referenced only for identification and compatibility purposes.
What are the shipping and warranty terms?
Typical transit is 5–15 days with standard shipping options shown at checkout. Warranty coverage and return eligibility follow the applicable order and store policies; contact support with your order details if assistance is needed.
Safety & Important Information
- Verify the original part number, engine model, stroke, and serial-number range before purchase.
- Do not install this part on a 2-stroke engine unless a qualified technician and the applicable manufacturer documentation specifically confirm compatibility.
- Inspect the pump, fittings, O-ring, and fuel lines for damage before installation.
- Fuel is flammable. Work in a well-ventilated area away from open flames, sparks, and ignition sources.
- Professional installation is recommended for safe and reliable operation.
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