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Start ShoppingMIKUNI FJ8-8DDY01-98 Jet Needle - Precision Fuel Delivery for Carburetors
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Description
Upgrade your powersports engine's fuel delivery system with this MIKUNI FJ8-8DDY01-98 Jet Needle. Engineered for precision, this critical component ensures optimal fuel-air mixture ratios, delivering improved throttle response, smoother power delivery, and maximum performance for your carbureted engine.
Key Features
- Exact Fitment: Precision-machined for MIKUNI FJ8-8DDY01-98 carburetors to ensure perfect compatibility and leak-free operation.
- High-Durability Construction: Made from premium alloy steel for resistance to heat, corrosion, and wear in demanding powersports environments.
- Enhanced Fuel Flow Control: Fine-tuned needle geometry provides precise fuel metering across all throttle positions for consistent power output.
Why Choose This Product
This jet needle is essential for maintaining peak engine performance and fuel efficiency in powersports applications. Its precision engineering ensures reliable operation under extreme conditions, while the durable construction reduces maintenance frequency. Whether you're tuning a motorcycle, ATV, or UTV, this replacement part offers a direct upgrade path to improved throttle response and overall engine performance without compromising reliability.
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Upgrade your powersports engine's fuel delivery system with this MIKUNI FJ8-8DDY01-98 Jet Needle. Engineered for precision, this critical component ensures optimal fuel-air mixture ratios, delivering improved throttle response, smoother power delivery, and maximum performance for your carbureted engine.
Key Features
- Exact Fitment: Precision-machined for MIKUNI FJ8-8DDY01-98 carburetors to ensure perfect compatibility and leak-free operation.
- High-Durability Construction: Made from premium alloy steel for resistance to heat, corrosion, and wear in demanding powersports environments.
- Enhanced Fuel Flow Control: Fine-tuned needle geometry provides precise fuel metering across all throttle positions for consistent power output.
Why Choose This Product
This jet needle is essential for maintaining peak engine performance and fuel efficiency in powersports applications. Its precision engineering ensures reliable operation under extreme conditions, while the durable construction reduces maintenance frequency. Whether you're tuning a motorcycle, ATV, or UTV, this replacement part offers a direct upgrade path to improved throttle response and overall engine performance without compromising reliability.
| SKU | GM4C39D171 |
|---|---|
| MPN | FJ8-8DDY01-98 |
| Brand | MIKUNI |
| Category | Intake/Carb/Fuel System |
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Frequently Asked Questions
The jet needle controls the fuel-air mixture during mid-range throttle positions (roughly 1/4 to 3/4 throttle). Different needle tapers and positions affect how lean or rich the mixture is in this range.
Replace if the needle is bent, has visible wear grooves, or if you're experiencing mid-range performance issues like hesitation, bogging, or poor fuel economy that can't be solved by adjusting the needle position.
Yes. Moving the needle clip up (toward the tapered end) leans the mixture; moving it down richens it. This allows fine-tuning without replacing the needle.
No. The FJ8-8DDY01-98 is specific to certain Mikuni carburetor models. Verify compatibility with your exact carburetor model before purchasing.
OEM needles provide stock performance characteristics. Aftermarket needles may offer different taper profiles for tuning purposes (leaner or richer mid-range response).
Installation Guide
Difficulty
Medium
Est. Time
15 min
Tools Required
- Small screwdrivers (Phillips and flathead)
- Carburetor removal tools (if replacing in-situ)
- Gasket scraper
- Clean rags
Pro Tips
- Mark the original needle position (groove number) before removal for reference
- Handle the needle carefully - it's precision-machined and can be bent
- Ensure the needle clip is fully seated in the groove
- Clean the needle seat area before installation
- Test carburetor function after installation
Common Mistakes to Avoid
- Not noting the original needle position before removal
- Damaging the needle groove during installation
- Failing to properly seat the needle clip
- Installing upside down or backwards
Durability & Warranty
Expected Lifespan
Indefinite if not bent or damaged; typically lasts the life of the carburetor
Warranty
Typically covered under manufacturer warranty if defective
Maintenance
No maintenance required; inspect for bending or wear during carburetor service
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