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Start ShoppingMIKUNI FVM34/39-3.3 Needle Valve Round Pump - High-Performance Fuel System Component
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Description
Upgrade your powersports fuel system with MIKUNI's FVM34/39-3.3 Needle Valve Round Pump, designed for precise fuel metering and reliable performance. This critical component ensures consistent fuel flow, maximizing engine efficiency and power output for motorcycles, ATVs, and more.
Key Features
- Precision Fuel Metering: Advanced needle valve technology delivers accurate fuel flow for optimal engine performance.
- Durable Construction: High-quality materials withstand harsh conditions for long-lasting reliability.
- Compatibility: Specifically engineered for MIKUNI carburetor systems to ensure seamless integration.
- Easy Installation: Streamlined design simplifies replacement without compromising performance.
- Consistent Performance: Maintains stable fuel delivery across varying operating conditions.
Why Choose This Product
Whether you're tuning a high-performance motorcycle or maintaining an ATV, this needle valve pump offers unmatched precision and durability. Its robust construction reduces maintenance needs, while the optimized fuel flow enhances throttle response and fuel efficiency. Perfect for riders who demand reliable, consistent power from their engines.
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Upgrade your powersports fuel system with MIKUNI's FVM34/39-3.3 Needle Valve Round Pump, designed for precise fuel metering and reliable performance. This critical component ensures consistent fuel flow, maximizing engine efficiency and power output for motorcycles, ATVs, and more.
Key Features
- Precision Fuel Metering: Advanced needle valve technology delivers accurate fuel flow for optimal engine performance.
- Durable Construction: High-quality materials withstand harsh conditions for long-lasting reliability.
- Compatibility: Specifically engineered for MIKUNI carburetor systems to ensure seamless integration.
- Easy Installation: Streamlined design simplifies replacement without compromising performance.
- Consistent Performance: Maintains stable fuel delivery across varying operating conditions.
Why Choose This Product
Whether you're tuning a high-performance motorcycle or maintaining an ATV, this needle valve pump offers unmatched precision and durability. Its robust construction reduces maintenance needs, while the optimized fuel flow enhances throttle response and fuel efficiency. Perfect for riders who demand reliable, consistent power from their engines.
| SKU | GM90048D48 |
|---|---|
| MPN | FVM34/39-3.3 |
| Brand | MIKUNI |
| Category | Intake/Carb/Fuel System |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various Japanese | VM34/VM39 carbureted motorcycles/ATVs | 1980-2024 |
| Suzuki | RM250, RMZ250, DRZ400 | 1990-2010 |
Frequently Asked Questions
Yes, this is the direct OEM replacement needle valve for VM36/VM38 carbs on DRZ400 models.
3.3 is higher flow for stock or slightly modified engines. Use 2.5 for leaner jetting or high altitude.
Yes, worn needle valves are the #1 cause of carb overflow. This Viton-tipped valve seals better than OEM.
FVM34/39 fits round slide VM carbs only. Flat slide uses different part numbers.
Installation Guide
Difficulty
Easy
Est. Time
15 min
Tools Required
- Small flathead screwdriver
- Needle nose pliers
- Carb cleaner
Pro Tips
- Turn off fuel petcock before starting
- Inspect float height after install
- Use carb rebuild kit while carb is apart
Common Mistakes to Avoid
- Not draining carb bowl first
- Damaging float when removing
Comparison vs Stock/OEM
Aftermarket Mikuni with Viton seal vs. OEM soft rubber tip
Improvements
- Better fuel resistance
- Higher pressure tolerance
- Longer lifespan in ethanol fuel
Considerations
- Slightly higher flow may require jetting adjustment
Durability & Warranty
Expected Lifespan
3-5 years typical use, 10+ years with clean fuel
Warranty
1 year Mikuni manufacturer warranty
Maintenance
Inspect annually, replace if float sticks, use ethanol-free fuel when possible
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