Fuel Line Primer Bulb for Yamaha 4-Stroke 75–250HP Outboards – Replaces 6YK-24360-73-00 and 6YK-24360-72-00
Fuel Line Primer Bulb for Yamaha 4-Stroke 75–250HP Outboards – Replaces 6YK-24360-73-00 and 6YK-24360-72-00 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
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Fuel Line Primer Bulb for Yamaha 4-Stroke 75–250HP Outboards – Repl...
Fuel Line Primer Bulb for Yamaha 4-Stroke 75–250HP Outboards – Replaces 6YK-24360-73-00 and 6YK-24360-72-00 is backordered and will ship as soon as it is back in stock.
Product Details
This fuel line primer bulb assembly is an aftermarket replacement for selected Yamaha 4-Stroke outboards using Yamaha primer pump assembly reference 6YK-24360-73-00. Catalog applications include Yamaha 75HP, 90HP, 115HP, 150HP, 175HP, 200HP, 225HP, and 250HP models, depending on the exact model, year, configuration, and serial-number range.
The assembly installs in the external fuel line and uses an internal one-way check-valve design to help draw fuel from the tank and maintain prime for easier starting. Always compare the original bulb, hose size, fuel-flow direction, and listed OEM reference before ordering.
- Designed for external marine fuel-line installation.
- Fits applications using an 8mm fuel-line connection, subject to confirmation against the original part.
- Internal check valves support one-way fuel flow and fuel-system priming.
- Aftermarket replacement; Yamaha is a trademark of Yamaha Motor Co., Ltd.
Part Number Matrix
These are reference numbers associated with this primer pump application. A reference number alone does not confirm fitment for every engine configuration.
| Brand | Part Number | Reference |
|---|---|---|
| Yamaha | 6YK-24360-73-00 | Primary OEM reference for the replacement described on this page |
| Yamaha | 6YK-24360-72-00 | Earlier OEM reference found in Yamaha catalog applications |
Engine & Model Compatibility
The following examples are supported by catalog occurrences for the listed Yamaha OEM references. Confirm the complete model designation, year, configuration, and serial-number range before installation.
| Brand | Model examples | Rated HP | Stroke | Catalog years shown | OEM reference |
|---|---|---|---|---|---|
| Yamaha | F75LA, F75LB | 75 | 4-Stroke | 2012–2017 | 6YK-24360-73-00 or 6YK-24360-72-00, depending on year |
| Yamaha | F90JA, F90LA, F90XA, F90JB, F90LB, F90XB | 90 | 4-Stroke | 2012–2017 | 6YK-24360-73-00 or 6YK-24360-72-00, depending on year |
| Yamaha | F115JA, F115LA, F115XA, F115JB, F115LB, F115XB, LF115XA, LF115XB | 115 | 4-Stroke | 2012–2017 | 6YK-24360-73-00 or 6YK-24360-72-00, depending on year |
| Yamaha | F150JA, F150LA, F150XA, F150JB, F150LB, F150XB, F150LCA, F150XCA, VF150LA, VF150XA, LF150XA, LF150XB, LF150XCA | 150 | 4-Stroke | 2012–2017 | 6YK-24360-73-00 or 6YK-24360-72-00, depending on year |
| Yamaha | F175LA, F175XA, F175LCA, F175XCA, VF175LA, VF175XA, LF175XCA | 175 | 4-Stroke | 2014–2017 | 6YK-24360-73-00 |
| Yamaha | F200XA, LF200XA | 200 | 4-Stroke | 2012–2017 | 6YK-24360-73-00 or 6YK-24360-72-00, depending on year |
| Yamaha | F225XA | 225 | 4-Stroke | 2012–2017 | 6YK-24360-73-00 or 6YK-24360-72-00, depending on year |
| Yamaha | LF250UA, LF250XA, F250 applications shown in catalog data | 250 | 4-Stroke | 2012–2017 | 6YK-24360-73-00 or 6YK-24360-72-00, depending on year |
Important: The examples above do not establish universal fitment for every Yamaha outboard in the same horsepower class. Yamaha model suffixes, production years, fuel-system layouts, and serial-number breaks can change the correct primer pump reference. Match your original part number and connection arrangement before purchase.
Technical Specs
- Product Type
- External fuel line primer bulb assembly
- Application
- Selected Yamaha 4-Stroke outboard fuel systems
- Fuel Type
- Gasoline, including ethanol-blended gasoline when used with a compatible marine fuel system
- Connection
- 8mm fuel line; verify against the original hose and fittings
- Material
- Marine-grade rubber with ABS components
- Color
- Black
- Approximate Weight
- 90g (0.2 lb)
- Flow Function
- Internal check valves support one-way fuel flow and help maintain prime
What’s in the Box
- 1 x Primer bulb assembly
Hose clamps, fuel hose, and other fuel-system components are not included unless separately stated in the order details.
Installation Notes
- Turn the engine off and allow it to cool. Disconnect the boat battery and work outdoors or in a well-ventilated area away from sparks, flames, and other ignition sources.
- Locate the existing primer bulb in the fuel line between the fuel tank and the engine. Place an absorbent rag below the connection points.
- Release the hose clamps and carefully remove the old primer bulb. Replace damaged or hardened fuel hose before installing the new bulb.
- Identify the fuel-flow arrow on the bulb. The arrow must point toward the engine.
- Install suitable hose clamps on the fuel line, push the hoses fully onto the bulb ends, and position the clamps behind the hose barbs or connection ridges.
- Tighten the clamps securely without cutting or crushing the hose.
- Squeeze the bulb until it becomes firm, then inspect every connection for fuel leakage before starting the engine.
- If fuel leaks, the bulb does not become firm, or the engine exhibits abnormal fuel-delivery symptoms, stop operation and correct the installation before use.
Troubleshooting & FAQ
How do I confirm fitment for my Yamaha outboard?
Check the complete engine model, horsepower, year, configuration, and serial-number range. Then compare the original primer bulb, hose size, flow direction, and OEM reference with the information on this page. Do not rely on horsepower alone.
What are common signs of a failing primer bulb?
Possible symptoms include hard starting, stalling, visible cracking, fuel leakage, a bulb that will not become firm, or a bulb that has become unusually hard or soft. These symptoms can also result from damaged hose, loose clamps, a blocked vent, or another fuel-system fault.
Can this bulb be used with ethanol-blended fuel?
The bulb is described for gasoline fuel systems and uses marine-grade rubber materials. Confirm that the complete fuel system, hose, tank, and engine are approved for the fuel being used, and inspect the bulb regularly for swelling, hardening, cracking, or leakage.
How should the primer bulb be used?
With the fuel-flow arrow pointing toward the engine, squeeze the bulb several times before starting until it becomes firm. Once the engine is running, the engine fuel system normally maintains fuel delivery without continuous squeezing.
When should a primer bulb be replaced?
Inspect it at least annually and replace it at the first sign of cracking, hardening, swelling, fuel leakage, or loss of priming performance. Service life depends on fuel exposure, storage conditions, sunlight, and operating environment.
Is this a genuine Yamaha component?
No. This is an aftermarket replacement intended for applications using the listed Yamaha OEM references. Yamaha part numbers are shown only for identification and compatibility comparison.
How fast is shipping and what does it cost?
Typical standard delivery is 5–15 days, with free standard shipping where available. Expedited options and final delivery estimates are shown at checkout when offered for your destination.
What is the warranty and return policy?
Warranty and return eligibility are governed by the current store policy and order terms. Contact customer support with your order details before returning or installing a part if you believe it is incorrect or defective.
Safety & Important Information
- Fuel is flammable. Work in a well-ventilated area away from flames, sparks, hot surfaces, and smoking materials.
- Verify the original part, hose size, flow direction, model, year, and serial-number conditions before installation.
- Do not operate the boat if any fuel leak is present.
- This is an aftermarket replacement, not an OEM Yamaha component.
- Professional installation is recommended when working on a marine fuel system.
About Sea Sierra
- Pro-Grade Standards — We supply marine replacement parts selected for dependable real-world service.
- Fast Global Fulfillment — Free standard delivery is available to most regions where offered.
- Manufacturer-Direct Value — Practical replacement parts at competitive prices.
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