Jun 26, 2026
6Y1-24306-00 vs 6Y2-24306-00 | What's the Difference?
Compare Yamaha 6Y1-24306-00 and 6Y2-24306-00 fuel hose assemblies. Learn the differences, compatible models, and how to choose the correct replacement for your outboard.
6Y1-24306-00 vs 6Y2-24306-00: What's the Difference?
Choosing the correct Yamaha fuel hose assembly is essential for safe and reliable engine performance. Two of the most common replacement part numbers are 6Y1-24306-00 and 6Y2-24306-00.
At first glance, they look very similar. However, they are designed for different Yamaha outboard models and production years. Ordering the wrong part may result in poor fitment or connection issues.
This guide explains the differences and helps you select the correct replacement.
What Are 6Y1-24306-00 and 6Y2-24306-00?
Both parts are Yamaha fuel hose assemblies that connect the external fuel tank to the outboard engine.
A complete assembly typically includes:
- Fuel hose
- Primer bulb
- Fuel connectors
- Hose clamps
Their main purpose is to deliver a steady fuel supply while maintaining proper pressure and preventing leaks.
Key Differences
Although the overall function is the same, there are several differences.
Feature | 6Y1-24306-00 | 6Y2-24306-00 |
|---|---|---|
OEM Series | 6Y1 | 6Y2 |
Compatible Models | Earlier Yamaha models | Newer Yamaha models |
Connector Design | Varies by model | Updated connector design |
diameter | 6mm | 8mm |
The exact fit depends on your engine model and serial number rather than horsepower alone.
How to Identify the Correct Part
Before ordering, check the following information:
- Engine model
- Horsepower (HP)
- Production year
- Engine serial number
- Original OEM part number
The OEM number printed on your existing fuel hose is the fastest way to confirm compatibility.
If the number is no longer visible, the engine identification plate can also be used to verify the correct replacement.
Common Signs Your Fuel Hose Needs Replacement
A worn fuel hose assembly can affect engine performance and fuel delivery.
Replace it if you notice:
- Cracked or hardened hose
- Fuel leaks
- Damaged primer bulb
- Loose connectors
- Difficulty priming fuel
- Engine hesitation or hard starting
Replacing the hose before failure helps avoid fuel system problems on the water.
Will 6Y1-24306-00 Replace 6Y2-24306-00?
Not always.
Although the two assemblies appear similar, Yamaha designed them for different applications.
Do not replace one with the other unless compatibility has been confirmed by the engine model or OEM reference.
When in doubt, compare the original part number or contact a supplier for assistance.
Related Products
Customers purchasing a new Yamaha fuel hose assembly often replace other fuel system parts at the same time, including:
- Fuel Filter
- Fuel Connector
- Primer Bulb
- Fuel Tank Connector
- Fuel Line Hose
- Hose Clamps
Replacing worn fuel system components together improves reliability and reduces maintenance.
Frequently Asked Questions
Are 6Y1-24306-00 and 6Y2-24306-00 interchangeable?
Not necessarily. Compatibility depends on your engine model, year, and OEM part number.
How do I know which fuel hose fits my outboard?
Check your engine model, horsepower, serial number, and the OEM number printed on the existing hose.
Can I replace only the primer bulb?
Yes, if the hose and connectors are still in good condition. However, replacing the complete assembly is often more reliable.
How long does a Yamaha fuel hose last?
With normal use, inspect the hose every season and replace it if it becomes cracked, stiff, or shows signs of wear.
Need Help Choosing the Right Fuel Hose?
If you're unsure whether your outboard requires 6Y1-24306-00 or 6Y2-24306-00, we're here to help.
Simply send us:
- Engine Model
- Horsepower
- Production Year
- Serial Number
- OEM Part Number (if available)
Our team will quickly confirm the correct Yamaha fuel hose assembly and recommend the best replacement for your engine.
