Fuel Line Primer Bulb – Fits Yamaha 70-225HP Outboards (Replaces 6YK-24360-73-00, 6YK-24360-72-00)
Fuel Line Primer Bulb – Fits Yamaha 70-225HP Outboards (Replaces 6YK-24360-73-00, 6YK-24360-72-00) is backordered and will ship as soon as it is back in stock.
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Fuel Line Primer Bulb – Fits Yamaha 70-225HP Outboards (Replaces 6Y...
Fuel Line Primer Bulb – Fits Yamaha 70-225HP Outboards (Replaces 6YK-24360-73-00, 6YK-24360-72-00) is backordered and will ship as soon as it is back in stock.
Product Details
This Fuel Line Primer Bulb – Fits Yamaha 75-225HP Outboards (Replaces 6YK-24360-73-00) ensures reliable fuel delivery for a wide range of Yamaha engines. It is designed for external fuel line installation on 4-Stroke models from 70HP to 250HP (2000–Current) and various 2-Stroke 115-150HP, HPDI, and OX66 models, providing consistent fuel flow for easy starting and smooth operation.
This assembly is a direct replacement for Yamaha part numbers 6YK-24360-73-00, 6YK-24360-72-00, 6YK-24360-71-00, and other equivalents listed in the matrix below.
- Installs on the external fuel line with 8mm push-fit hose connections.
- Constructed from marine-grade rubber and ABS components to withstand gasoline and ethanol blends.
- Features internal check valves to ensure one-way fuel flow and maintain prime.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Yamaha | 6YK-24360-73-00 | Current Part |
| Yamaha | 6YK-24360-72-00 | Superseded by 6YK-24360-73-00 |
| Yamaha | 6YK-24360-71-00 | Superseded by 6YK-24360-72-00 |
| Yamaha | 6YK-24360-70-00 | Superseded by 6YK-24360-71-00 |
| Yamaha | 6Y2-24360-70-00 | Interchangeable |
| Yamaha | 6Y2-24360-60-00 | Interchangeable |
| Yamaha | 6Y2-24360-52-00 | Interchangeable |
| Yamaha | 6Y2-24360-51-00 | Interchangeable |
| Yamaha | 6Y2-24360-02-00 | Interchangeable |
| Yamaha | 6Y2-24360-01-00 | Interchangeable |
| Yamaha | 6Y2-24360-00-00 | Interchangeable |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
Yamaha 4-Stroke Outboards
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F70 | 70 | 4-Stroke | 2010–2015 | 6YK-24360-73-00 | For serial number 6CJ-1051515 and older |
| Yamaha | F70 | 70 | 4-Stroke | 2015–Current | 6YK-24360-73-00 | For serial number 6CJ-1051515 and newer |
| Yamaha | F75 | 75 | 4-Stroke | 2003–2005 | 6YK-24360-73-00 | |
| Yamaha | F75, F75A | 75 | 4-Stroke | 2006–2017 | 6YK-24360-73-00 | |
| Yamaha | F115 | 115 | 4-Stroke | 2000–2001 | 6YK-24360-73-00 | |
| Yamaha | F115 | 115 | 4-Stroke | 2002–2005 | 6YK-24360-73-00 | |
| Yamaha | F115, F115A | 115 | 4-Stroke | 2006–2011 | 6YK-24360-73-00 | |
| Yamaha | F115A | 115 | 4-Stroke | 2012–2013 | 6YK-24360-73-00 | |
| Yamaha | F115A, F115B | 115 | 4-Stroke | 2014 | 6YK-24360-73-00 | |
| Yamaha | F115B | 115 | 4-Stroke | 2015–Current | 6YK-24360-73-00 | |
| Yamaha | VF115 SHO | 115 | 4-Stroke | 2015–Current | 6YK-24360-73-00 | |
| Yamaha | VF150LA SHO | 150 | 4-Stroke | 2013–2018 | 6YK-24360-73-00 | |
| Yamaha | VF150LA SHO | 150 | 4-Stroke | 2019–Current | 6YK-24360-73-00 | |
| Yamaha | VF150XA SHO | 150 | 4-Stroke | 2015–Current | 6YK-24360-73-00 | |
| Yamaha | F175, F200 (2.8L) | 175, 200 | 4-Stroke | 2006–Current | 6YK-24360-73-00 | |
| Yamaha | F200, F225 (3.3L V6) | 200, 225 | 4-Stroke | 2002–2003 | 6YK-24360-73-00 | |
| Yamaha | F200, F225 (3.3L V6) | 200, 225 | 4-Stroke | 2004–2005 | 6YK-24360-73-00 | |
| Yamaha | F200, F225 (3.3L V6) | 200, 225 | 4-Stroke | 2006 | 6YK-24360-73-00 | |
| Yamaha | F200, F225 (3.3L V6) | 200, 225 | 4-Stroke | 2007–2008 | 6YK-24360-73-00 | |
| Yamaha | F200, F225 (3.3L V6) | 200, 225 | 4-Stroke | 2009–2010 | 6YK-24360-73-00 | |
| Yamaha | F200, F225 (3.3L V6) | 200, 225 | 4-Stroke | 2011–Current | 6YK-24360-73-00 | |
| Yamaha | F250 (3.3L V6) | 250 | 4-Stroke | 2005 | 6YK-24360-73-00 | |
| Yamaha | F250 (3.3L V6) | 250 | 4-Stroke | 2006–2008 | 6YK-24360-73-00 | |
| Yamaha | F250 (3.3L V6) | 250 | 4-Stroke | 2009–2010 | 6YK-24360-73-00 | |
| Yamaha | F250 (3.3L V6) | 250 | 4-Stroke | 2011–Current | 6YK-24360-73-00 |
Yamaha 2-Stroke Outboards
| Brand | Model | Rated HP | Stroke | OEM Part No. |
|---|---|---|---|---|
| Yamaha | 115-150 | 115-150 | 2-Stroke | 6YK-24360-73-00 |
Technical Specs
- Product Type
- Fuel Line Primer Bulb
- Installation
- External Fuel Line
- Fuel Type
- Gasoline (including ethanol blends)
- Connection
- 8mm Fuel Line
- Housing Material
- Marine-grade rubber with ABS components
- Housing Color
- Black
- Weight
- 90g (0.2 lb)
- Fitting Type
- Push-fit hose connection
- Other Technical Attributes
- Includes internal check valves to maintain one-way fuel flow
What’s in the Box
- 1 x Primer Bulb Assembly (6YK-24360-73-00)
Installation Notes
- Ensure the engine is off and cool. Disconnect the boat's battery and work in a well-ventilated area away from sparks or flames.
- Locate the existing primer bulb on the fuel line between the fuel tank and the engine. Place a rag underneath to catch any spilled fuel.
- Loosen the hose clamps on both ends of the old primer bulb and carefully twist it off the fuel lines.
- Note the fuel flow direction, usually indicated by an arrow on the bulb. The arrow must point towards the engine.
- Slide the new hose clamps onto the fuel lines. Firmly push the fuel lines onto the corresponding ends of the new primer bulb.
- Secure the fuel lines by tightening the hose clamps snugly on both ends of the new bulb. Do not overtighten.
- Squeeze the new primer bulb until it feels firm, indicating it has filled with fuel.
- Check for any leaks at the connections. If a leak is found, re-check the clamp tightness and hose seating.
Troubleshooting & FAQ
How do I know if this primer bulb will fit my specific engine model?
The best way to confirm fitment is by checking the compatibility tables on this page. Match your engine's model, horsepower, and year range. You can also verify that your current part number is listed in our Part Number Matrix.
What are the signs of a failing primer bulb?
Common symptoms include the engine being hard to start, stalling at idle, or a bulb that won't get firm when squeezed. You might also notice visible cracks, fuel leaks, or a bulb that feels excessively hard or mushy.
Can this bulb be used with ethanol-blended fuels (e.g., E10)?
Yes, this primer bulb is constructed with modern, marine-grade rubber and materials that are resistant to the corrosive effects of ethanol-blended gasoline, ensuring durability and longevity.
How do I properly use the primer bulb?
Before starting the engine, squeeze the bulb with the arrow pointing up (if possible) until it becomes firm. This action manually pumps fuel from the tank to the engine's fuel system. Once the engine is running, the fuel pump takes over, and no further priming is needed.
Is there a recommended replacement interval?
There is no fixed interval, but primer bulbs should be inspected annually for signs of cracking, hardening, or leaking as part of your regular maintenance. We recommend replacing it every 2-3 years or at the first sign of degradation to prevent fuel delivery issues.
What's the difference between this and the OEM Yamaha part?
This is an aftermarket part designed to meet or exceed OEM specifications. It provides the same function, fit, and fuel compatibility as the original Yamaha part but at a more competitive price point. It is manufactured in an ISO 9002 certified facility and undergoes quality control inspections.
How fast is shipping and what does it cost?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
What is the warranty and return policy?
This part is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window for items that are unused and in their 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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