Carburetor Assembly – Fits Yamaha 15HP Four-Stroke Outboards (Replaces 66M-14301-11-00, 18-34600)
Carburetor Assembly – Fits Yamaha 15HP Four-Stroke Outboards (Replaces 66M-14301-11-00, 18-34600) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Carburetor Assembly – Fits Yamaha 15HP Four-Stroke Outboards (Repla...
Carburetor Assembly – Fits Yamaha 15HP Four-Stroke Outboards (Replaces 66M-14301-11-00, 18-34600) is backordered and will ship as soon as it is back in stock.
Product Details
This is a complete Carburetor Assembly – Fits Yamaha 15HP Four-Stroke Outboards, designed for engine models from approximately 1998 to 2001 and later. It is engineered to fit specific 4-stroke outboards, including Yamaha F15 series and compatible Parsun models (9.9HP, 13.5HP, and 15HP).
This assembly provides a direct cross-reference for Yamaha part numbers 66M-14301-11-00, 66M-14301-12-00, 66M-14301-00-00, 6D4-14301-00-00, and Sierra aftermarket number 18-34600.
- Installs directly as an OEM-style replacement with no modifications needed.
- Manufactured in an ISO 9002 certified facility for consistent quality.
- Includes one complete carburetor assembly for a full swap.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 66M-14301-11-00 |
| Yamaha | 66M-14301-12-00 |
| Yamaha | 66M-14301-00-00 |
| Yamaha | 6D4-14301-00-00 |
| Sierra | 18-34600 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This carburetor fits specific Yamaha F15 four-stroke models. Please verify your engine's part number or serial range.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F15 | 15 | 4-Stroke | 1998–2001 | 66M-14301-11-00 | Manual start models |
| Yamaha | F15 | 15 | 4-Stroke | 1998+ | 66M-14301-12-00 | Later models |
It is also a compatible replacement for certain Parsun and Hidea four-stroke outboards that use a similar carburetor design.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Parsun | F9.9 | 9.9 | 4-Stroke | Aftermarket compatible | ||
| Parsun | F13.5 | 13.5 | 4-Stroke | Aftermarket compatible | ||
| Parsun | F15 | 15 | 4-Stroke | Aftermarket compatible | ||
| Hidea | F20H/HDF20H | 20 | 4-Stroke | Per Oversee Marine data |
Technical Specs
- Product Type
- Carburetor Assembly
- Installation
- Direct OEM replacement
- Fuel Type
- Gasoline
- Connection
- OEM matching intake/fuel line fittings
- Housing Material
- Die-cast aluminum alloy
- Housing Color
- Silver/metallic
- Warranty
- 1 year against manufacturing defects
- Other Technical Attributes
- ISO9002 certified manufacturing
What’s in the Box
- 1 x Carburetor Assembly (replaces 66M-14301-11-00 / 66M-14301-12-00)
Installation Notes
- Ensure the engine is turned off and has completely cooled down.
- Disconnect the vessel's battery to prevent accidental starting.
- Remove the engine cowling to access the carburetor assembly.
- Carefully disconnect and label all fuel lines, throttle linkages, and choke linkages.
- Remove the mounting bolts holding the old carburetor and gently take it off the intake manifold.
- Install the new carburetor, ensuring it is properly seated against the gasket.
- Reconnect all fuel lines and linkages to their correct positions.
- Perform an initial adjustment of the idle and mixture screws according to your engine's service manual.
- Test run the engine in a ventilated area or on the water, and make fine adjustments as needed for smooth idling and acceleration.
Troubleshooting & FAQ
How do I confirm this carburetor fits my specific Yamaha F15?
The best way is to match the part number stamped on your existing carburetor to one of the numbers listed: 66M-14301-11-00, 66M-14301-12-00, 66M-14301-00-00, or 6D4-14301-00-00. While it is known to fit F15 models from 1998 onwards, checking the number is the most reliable method.
Will this work for an engine model year outside the 1998–2001 range?
It may. Yamaha used this carburetor series on models marked "1998+" in some documentation. If your engine's original part number is a compatible match, this carburetor should fit regardless of the exact year.
Do I need to adjust the carburetor after installing it?
Yes, initial and fine-tuning adjustments are almost always necessary. The carburetor is pre-set to a factory baseline, but you will need to adjust the idle speed and air/fuel mixture screws to match your specific engine's requirements for optimal performance.
What are the common signs that my original carburetor is failing?
Symptoms of a bad carburetor include hard starting, rough idling, stalling, engine hesitation or sputtering during acceleration, black smoke from the exhaust, and poor fuel economy. Fuel leaks from the carburetor body are also a clear sign of failure.
Is any special maintenance required for this new carburetor?
To ensure long life, use fuel stabilizer when the boat is stored, especially during the off-season. Periodically check for fuel leaks and ensure all linkages and connections are secure. Using clean, fresh fuel and a good quality fuel filter will prevent debris from clogging internal passages.
How does this part differ from the original Yamaha OEM part?
This is an aftermarket component, not an original Yamaha part. It is designed and manufactured to meet or exceed OEM specifications using comparable materials. The primary differences are the brand name and price, offering a cost-effective alternative to dealer parts.
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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