Aftermarket Carburetor Assembly for Yamaha 15 HP 4-Stroke Outboards – Replaces 66M-14301-11-00, 66M-14301-12-00 and Sierra 18-34600
Aftermarket Carburetor Assembly for Yamaha 15 HP 4-Stroke Outboards – Replaces 66M-14301-11-00, 66M-14301-12-00 and Sierra 18-34600 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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Aftermarket Carburetor Assembly for Yamaha 15 HP 4-Stroke Outboards...
Aftermarket Carburetor Assembly for Yamaha 15 HP 4-Stroke Outboards – Replaces 66M-14301-11-00, 66M-14301-12-00 and Sierra 18-34600 is backordered and will ship as soon as it is back in stock.
Product Details
This is one aftermarket carburetor assembly for selected Yamaha 15 HP four-stroke outboards. The assembly is listed for Yamaha 15 HP manual-start applications from 1998–2001 and for Yamaha 15 HP four-stroke applications from 1998 onward, subject to the exact engine model and serial-range requirements.
The assembly is identified as a replacement for Yamaha part numbers 66M-14301-11-00 and 66M-14301-12-00. It is also cross-referenced to aftermarket number Sierra 18-34600.
- Aftermarket replacement carburetor assembly for selected Yamaha 15 HP four-stroke outboards.
- Supplied as one complete carburetor assembly.
- Designed for applications using the listed Yamaha carburetor references; confirm the original part number before ordering.
Part Number Matrix
Use the following references when comparing the replacement with the carburetor currently installed on your engine. These numbers identify the application references and should not be treated as proof of fitment without checking the complete engine model.
| Brand or Source | Part Number | Role |
|---|---|---|
| Yamaha | 66M-14301-11-00 | OEM reference |
| Yamaha | 66M-14301-12-00 | OEM reference |
| Sierra | 18-34600 | Aftermarket cross-reference |
Engine & Model Compatibility
Fitment depends on the engine model, year, starting configuration and serial range. Match the original carburetor reference and verify the complete model designation before installation.
| Brand | Model or Application | Rated HP | Stroke | Year or Range | Reference | Conditions |
|---|---|---|---|---|---|---|
| Yamaha | 15 HP manual-start applications | 15 | 4-Stroke | 1998–2001 | 66M-14301-11-00 / 66M-14301-12-00 | Confirm the exact model and serial range. |
| Yamaha | 15 HP four-stroke applications | 15 | 4-Stroke | 1998 onward | 66M-14301-11-00 / 66M-14301-12-00 | Application is not universal; verify the original carburetor number. |
| Yamaha | F15ELHZ, F15ESHZ, F15MLHZ and F15MSHZ | 15 | 4-Stroke | 2001 | 66M-14301-11-00 | Catalog-listed carburetor assembly application. |
| Yamaha | Selected F15 model variants | 15 | 4-Stroke | 2002–2003 | 66M-14301-11-00 | Verify the exact model designation and serial range. |
The available records support Yamaha 15 HP four-stroke applications. Do not assume fitment for other brands, horsepower ratings or engine families based only on a similar-looking carburetor.
Technical Specs
- Product Type
- Aftermarket carburetor assembly
- Application
- Selected Yamaha 15 HP four-stroke outboards
- Starting Configuration
- Manual-start applications are listed for 1998–2001
- Replacement References
- 66M-14301-11-00, 66M-14301-12-00 and Sierra 18-34600
- Quantity
- One carburetor assembly
- Fuel System
- Carbureted gasoline outboard fuel system
- Fitment Verification
- Match the original part number and confirm the complete engine model, year and serial range.
What’s in the Box
- 1 x aftermarket carburetor assembly
No additional components are confirmed by the available product record. Gaskets, linkages, hoses and adjustment hardware are not included unless specifically shown or stated by the seller.
Installation Notes
- Turn off the engine, allow it to cool completely and work in a well-ventilated area away from ignition sources.
- Disconnect the battery where appropriate and follow the engine manufacturer's safety procedures.
- Remove the engine cowling and document the routing of the fuel line, throttle linkage and choke linkage before disassembly.
- Shut off or drain the fuel supply as required, then disconnect the fuel line and linkages carefully.
- Remove the mounting hardware and take off the original carburetor without damaging the intake gasket or mating surfaces.
- Compare the replacement assembly with the original before installation, including mounting points, fuel connection and linkage positions.
- Install the replacement using the correct gasket and torque procedure specified in the engine service manual.
- Reconnect the fuel line and all linkages, then inspect for leaks before starting the engine.
- Set idle speed and any permitted adjustments according to the Yamaha service information for the specific engine model.
- Run the engine only in a safe, properly ventilated test environment and check for smooth starting, idle and acceleration.
Troubleshooting & FAQ
How do I confirm that this carburetor fits my Yamaha F15?
Check the complete engine model, year, starting configuration and serial range, then compare the number on the original carburetor with 66M-14301-11-00 or 66M-14301-12-00. A visual resemblance alone is not sufficient to confirm fitment.
Which Yamaha applications are listed?
The available product information lists Yamaha 15 HP manual-start applications from 1998–2001 and Yamaha 15 HP four-stroke applications from 1998 onward. Catalog records also identify the reference 66M-14301-11-00 on selected F15 model variants from 2001 through 2003. Verify the exact model and serial range before ordering.
Is this an original Yamaha carburetor?
No. This is an aftermarket replacement assembly. Yamaha part numbers are shown only as application and replacement references.
Does the package include a gasket or other installation parts?
The confirmed package content is one carburetor assembly. A gasket, fuel line, linkage, mounting hardware or other accessory is not confirmed as included unless separately stated in the order details.
Will the carburetor require adjustment after installation?
Adjustment may be required. Use the service procedure for the specific engine and do not change settings beyond the manufacturer's instructions. Check fuel connections and verify safe operation before normal use.
What symptoms can indicate a carburetor problem?
Hard starting, rough idle, stalling, hesitation, poor acceleration, fuel leakage or poor fuel economy can be associated with carburetor or fuel-system problems. Inspect the complete fuel system and seek qualified service when necessary.
What is the Sierra cross-reference?
Sierra 18-34600 is the aftermarket cross-reference listed for this carburetor application. Always compare the complete engine and original-part information before purchasing.
Safety & Important Info
- Confirm the original carburetor reference and complete engine model before ordering.
- Do not rely on horsepower alone; year, starting configuration, model suffix and serial range can affect fitment.
- This is an aftermarket replacement, not an original Yamaha component.
- Fuel-system work should be performed by a qualified technician when you are not familiar with marine engine service.
- Inspect all fuel connections for leaks before operating the engine.
About Sea Sierra
- Marine replacement parts selected for practical repair and maintenance applications.
- Clear aftermarket cross-references to help customers compare replacement options.
- Fitment-focused product information for safer, more confident ordering.
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