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Start ShoppingMIKUNI F990-793-004-P-5 Needle Jet - High-Performance Carburetor Fuel System Component
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Description
Upgrade your powersports engine's fuel delivery system with this MIKUNI Needle Jet. Designed for precision fuel metering, this critical component ensures optimal air-fuel ratios for enhanced power, efficiency, and smooth throttle response.
Key Features
- Exact Fuel Metering: Precisely calibrated to deliver consistent fuel flow for peak engine performance.
- Carburetor Compatibility: Engineered for seamless integration with MIKUNI carburetor systems for reliable operation.
- Durable Construction: Made from high-quality materials to withstand harsh riding conditions and prolonged use.
- Easy Installation: Designed for straightforward replacement without complex modifications.
Why Choose This Product
This Needle Jet is essential for riders seeking to maintain or enhance their engine's performance. Its precise fuel delivery ensures efficient combustion, reduces fuel waste, and improves throttle response. Whether you're tuning a motorcycle, ATV, or UTV, this component offers reliable performance and long-term durability. The MIKUNI brand guarantees compatibility with original equipment specifications, making it a trusted choice for serious riders and mechanics.
SKU:
GM750230CE
MPN:
F990-793-004-P-5
Category:
Intake/Carb/Fuel System
Brand:
MIKUNI
Stock:
In Stock
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Upgrade your powersports engine's fuel delivery system with this MIKUNI Needle Jet. Designed for precision fuel metering, this critical component ensures optimal air-fuel ratios for enhanced power, efficiency, and smooth throttle response.
Key Features
- Exact Fuel Metering: Precisely calibrated to deliver consistent fuel flow for peak engine performance.
- Carburetor Compatibility: Engineered for seamless integration with MIKUNI carburetor systems for reliable operation.
- Durable Construction: Made from high-quality materials to withstand harsh riding conditions and prolonged use.
- Easy Installation: Designed for straightforward replacement without complex modifications.
Why Choose This Product
This Needle Jet is essential for riders seeking to maintain or enhance their engine's performance. Its precise fuel delivery ensures efficient combustion, reduces fuel waste, and improves throttle response. Whether you're tuning a motorcycle, ATV, or UTV, this component offers reliable performance and long-term durability. The MIKUNI brand guarantees compatibility with original equipment specifications, making it a trusted choice for serious riders and mechanics.
| SKU | GM750230CE |
|---|---|
| MPN | F990-793-004-P-5 |
| Brand | MIKUNI |
| Category | Intake/Carb/Fuel System |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Yamaha | YZ450F | 2008-2018 |
| KTM | 450 SX-F | 2009-2020 |
| Honda | CRF450R | 2010-2022 |
| Suzuki | RMZ450 | 2007-2015 |
Frequently Asked Questions
Fits Mikuni VM34/VM36/VM38 series and many Keihin FCR needle jet applications. Check your carb model.
Yes, genuine Mikuni part used as OEM in many Japanese bikes and aftermarket carbs.
Often used with main/pilot jet changes for altitude/temp tuning. Needle clip position also affects fueling.
Larger needle jet richens mid-range. Confirm with plug reads or wideband O2.
Installation Guide
Difficulty
Easy
Est. Time
15 min
Tools Required
- Small flathead screwdriver
- Needle nose pliers
- Carb cleaner
Pro Tips
- Remove carb completely for easier access
- Note original jet position before removal
- Use carb rebuild kit if old o-rings are damaged
Common Mistakes to Avoid
- Not cleaning carb passages before install
- Installing backwards (jets have orientation)
Comparison vs Stock/OEM
Direct OEM replacement or performance upgrade for worn jets
Improvements
- Precise fuel metering
- Consistent atomization
- Corrosion resistant brass
Considerations
- Precise sizing critical - wrong size causes lean/rich conditions
Durability & Warranty
Expected Lifespan
Indefinite with proper jetting (doesn't wear like moving parts)
Warranty
Mikuni lifetime against manufacturing defects
Maintenance
Inspect during carb cleaning, replace if corroded or damaged
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