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Start ShoppingMIKUNI FVM28/253 Main Jet Plug - Brass Intake System Component for Carburetors
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Description
Upgrade your Mikuni carburetor's fuel delivery system with this high-precision Main Jet Plug. This essential component ensures accurate fuel metering for responsive engine performance and reliable operation in powersports applications.
Key Features
- Brass Construction: Corrosion-resistant material ensures long-lasting durability in harsh engine environments
- M5 x 0.75 Thread: Standard thread size for easy installation and compatibility with Mikuni flat slide carburetors
- 10mm Length: Optimal length for precise fuel flow regulation without compromising system integrity
- 0.5g Weight: Lightweight design minimizes impact on engine performance while maintaining structural strength
Why Choose This Product
Our Main Jet Plug is engineered for powersports enthusiasts who demand precision and reliability. The brass material resists corrosion and maintains dimensional stability, while the precise thread specification ensures seamless integration with Mikuni FVM series carburetors. This critical component helps maintain optimal air-fuel ratios, enhancing engine efficiency and power output. Whether you're tuning a motorcycle, ATV, or off-road vehicle, this plug delivers consistent performance under demanding conditions.
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Upgrade your Mikuni carburetor's fuel delivery system with this high-precision Main Jet Plug. This essential component ensures accurate fuel metering for responsive engine performance and reliable operation in powersports applications.
Key Features
- Brass Construction: Corrosion-resistant material ensures long-lasting durability in harsh engine environments
- M5 x 0.75 Thread: Standard thread size for easy installation and compatibility with Mikuni flat slide carburetors
- 10mm Length: Optimal length for precise fuel flow regulation without compromising system integrity
- 0.5g Weight: Lightweight design minimizes impact on engine performance while maintaining structural strength
Why Choose This Product
Our Main Jet Plug is engineered for powersports enthusiasts who demand precision and reliability. The brass material resists corrosion and maintains dimensional stability, while the precise thread specification ensures seamless integration with Mikuni FVM series carburetors. This critical component helps maintain optimal air-fuel ratios, enhancing engine efficiency and power output. Whether you're tuning a motorcycle, ATV, or off-road vehicle, this plug delivers consistent performance under demanding conditions.| SKU | GMB78674AC |
|---|---|
| MPN | FVM28/253 |
| Brand | MIKUNI |
| Category | Intake/Carb/Fuel System |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Yamaha | XT250, TT250, SR250 | 1980-2005 |
| Suzuki | DR250, DR350 | 1990-2010 |
| Kawasaki | KL250 Super Sherpa | 1985-2000 |
Frequently Asked Questions
Fits Mikuni FVM28 flat slide carburetors found on various 250cc trail and dual-sport bikes.
This is specifically the main jet plug (larger one). Pilot jet has a smaller plug.
No, it can be accessed from the side of the carburetor in most applications.
Yes, compatible with Mikuni and other main jets of the same thread size.
Installation Guide
Difficulty
Easy
Est. Time
5 min
Tools Required
- Small flathead screwdriver
- 6mm socket or wrench
Pro Tips
- Apply a tiny bit of thread sealant if reinstalling multiple times
- Clean carb body threads before installation
Common Mistakes to Avoid
- Cross-threading the plug
- Over-tightening which can strip threads
Comparison vs Stock/OEM
Direct OEM replacement part from Mikuni, identical to factory specification
Improvements
- None - exact OEM spec
- Genuine Mikuni quality vs generic aftermarket
Considerations
- Always prefer genuine Mikuni over cheap copies to avoid thread issues
Durability & Warranty
Expected Lifespan
Lifetime (does not wear out)
Warranty
Mikuni lifetime warranty against manufacturing defects
Maintenance
Inspect threads during carb cleaning, replace if stripped
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