Fuel Pump Assembly – Fits Mercury/Yamaha 8–15 HP 4-Stroke (Replaces 835389T1, 835389T02)
Fuel Pump Assembly – Fits Mercury/Yamaha 8–15 HP 4-Stroke (Replaces 835389T1, 835389T02) 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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Fuel Pump Assembly – Fits Mercury/Yamaha 8–15 HP 4-Stroke (Replaces...
Fuel Pump Assembly – Fits Mercury/Yamaha 8–15 HP 4-Stroke (Replaces 835389T1, 835389T02) is backordered and will ship as soon as it is back in stock.
Product Details
This Fuel Pump Assembly is engineered for Mercury/Yamaha 8–15 HP 4-Stroke Outboard Motors, offering reliable performance for a wide range of models. It is designed to fit Mercury/Mariner 8 HP, 9.9 HP, 13.5 HP, and 15 HP 4-stroke carbureted outboards from 1995–2006, as well as Yamaha F9.9, T9.9, and F15 4-stroke outboards from 1998–2006.
This assembly is a direct interchange for Mercury OEM parts 835389T1, 835389T02, and 835389A2; Yamaha parts 66M-24410-00-00, 66M-24410-01-00, 66M-24410-10-00, and 66M-24410-11-00; and aftermarket parts like Sierra 18-35302 and Mallory 9-35302.
- Installs as a direct OEM-style replacement.
- Designed specifically for 2-cylinder, 4-stroke outboard engines.
- Kit includes a new O-ring and hose clamps for a complete installation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Mercury | 835389T1 | Superseded by 835389A2 |
| Mercury | 835389T02 | Superseded by 835389A2 |
| Mercury | 835389A2 | Current Part |
| Yamaha | 66M-24410-00-00 | Superseded by 66M-24410-11-00 |
| Yamaha | 66M-24410-01-00 | Superseded by 66M-24410-11-00 |
| Yamaha | 66M-24410-10-00 | Superseded by 66M-24410-11-00 |
| Yamaha | 66M-24410-11-00 | Current Part |
| Sierra | 18-35302 | Aftermarket Interchange |
| Mallory | 9-35302 | Aftermarket Interchange |
Engine & Model Compatibility
Confirm your engine model and year in the tables below.
Mercury/Mariner Applications: This pump fits 8 HP to 15 HP 4-stroke models manufactured between 1995 and 2006.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury | BODENSEE (International) | 8 | 4-Stroke | 1995–2006 | 835389A2 | Superseded 835389T1, 835389T02 |
| Mercury | 9.9 HP Carb (323 cc) | 9.9 | 4-Stroke | 1995–2006 | 835389A2 | Superseded 835389T1, 835389T02 |
| Mercury | 13.5 HP Carb (International) | 13.5 | 4-Stroke | 1995–2006 | 835389A2 | Superseded 835389T1, 835389T02 |
| Mercury | 15 HP Carb 2 CYL | 15 | 4-Stroke | 1995–2006 | 835389A2 | Superseded 835389T1, 835389T02 |
Yamaha Applications: Compatible with 9.9 HP and 15 HP 4-stroke models from approximately 1998 to 2006. Verify your model number against the list.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F9.9 | 9.9 | 4-Stroke | 1998–2006 | 66M-24410-10-00 | Superseded by 66M-24410-11-00 |
| Yamaha | T9.9 | 9.9 | 4-Stroke | 2005–2006 | 66M-24410-11-00 | Current part |
| Yamaha | F15 | 15 | 4-Stroke | 1998–2006 | 66M-24410-11-00 | Current part |
| Yamaha | F9.9ELR2 | 9.9 | 4-Stroke | 2005 | 66M-24410-11-00 | Current part |
| Yamaha | F9.9MLH2 | 9.9 | 4-Stroke | 2005 | 66M-24410-11-00 | Current part |
| Yamaha | F9.9MSH2 | 9.9 | 4-Stroke | 2005 | 66M-24410-11-00 | Current part |
| Yamaha | F15ELHA | 15 | 4-Stroke | 2002 | 66M-24410-10-00 | Superseded by 66M-24410-11-00 |
| Yamaha | F15ESHA | 15 | 4-Stroke | 2002 | 66M-24410-10-00 | Superseded by 66M-24410-11-00 |
| Yamaha | F15MLHA | 15 | 4-Stroke | 2002 | 66M-24410-10-00 | Superseded by 66M-24410-11-00 |
| Yamaha | F15MSHA | 15 | 4-Stroke | 2002 | 66M-24410-10-00 | Superseded by 66M-24410-11-00 |
| Yamaha | F15PLHA | 15 | 4-Stroke | 2002 | 66M-24410-10-00 | Superseded by 66M-24410-11-00 |
| Yamaha | F15PLRA | 15 | 4-Stroke | 2002 | 66M-24410-10-00 | Superseded by 66M-24410-11-00 |
| Yamaha | AMH | 4-Stroke | 2007 | 66M-24410-11-00 | Specific model variant |
Technical Specs
- Product Type
- Fuel Pump Assembly
- Installation
- Direct OEM replacement
- Fuel Type
- Gasoline
- Connection
- Two hose barbs (inlet/outlet)
- Housing Material
- High-quality plastic with aluminum components
- Housing Color
- Black/Silver
- Weight
- 215 g (0.47 lbs)
- Fitting Type
- Hose barbs
- Warranty
- 180 days (FITKITBT), varies by manufacturer
- Other Attributes
- Designed for 2-cylinder, 4-stroke outboard engines
What’s in the Box
- 1 x Fuel Pump Assembly
- 1 x O-Ring
- 2 x Hose Clamps/Clips
- 1 x Installation Instructions
Installation Notes
- Disconnect the battery and relieve any pressure in the fuel system.
- Carefully clamp and disconnect the inlet and outlet fuel lines from the old pump.
- Remove the mounting bolts and take off the old fuel pump assembly.
- Clean the mounting surface on the engine block to ensure a proper seal.
- Install the new O-ring and mount the new fuel pump assembly.
- Securely reconnect the fuel lines using the new clamps provided.
- Reconnect the battery, prime the fuel system, and carefully check for any leaks before starting the engine.
Troubleshooting & FAQ
How do I know if my fuel pump is failing?
Common signs of a failing fuel pump include the engine bogging down under acceleration, difficulty starting, rough idling, or stalling. Reduced engine performance and fuel starvation are key indicators.
Will this pump fit my exact engine model?
This pump fits a wide range of models, but you must verify compatibility. Please check your original part number against our Part Number Matrix and find your engine model in the Engine & Model Compatibility tables above.
What is the difference between the various Yamaha part numbers like 66M-24410-10-00 and 66M-24410-11-00?
The different numbers represent supersessions. Yamaha often updates parts over time. Part number 66M-24410-11-00 is the most current replacement for the previous versions (-00, -01, -10), ensuring the latest design and material specifications.
Are special tools required for installation?
Installation can typically be completed with basic hand tools, such as a socket wrench set and hose clamp pliers. No specialized equipment is usually necessary.
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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