MIKUNI 447AI-391 Carburetor

( Brand: Mikuni ), ( Manufacturer Part Number: 447AI-391 ), ( Part Type: Carburetor )

Review MIKUNI 447ai 391 Carburetor Assembly

Mikuni 447AI-391 Carburetor - A Precision-Engineered Fuel Injection System for Enhanced Performance

The Mikuni 447AI-391 Carburetor is a testament to Mikuni's commitment to delivering high-quality, performance-enhancing fuel injection systems. This 447AI model, specifically the 391 variant, is a versatile and reliable addition to any motorcycle, ATV, or other high-performance vehicle.

Designed with a 39mm throat and a unique venturi shape, this carburetor offers optimal air-fuel mixture for efficient combustion. The 447AI series is characterized by its advanced design, featuring an automatic idle system (AI) that ensures smooth idle and quick throttle response. This system uses a servo motor to adjust the idle speed based on engine load and temperature, providing a more responsive and stable ride.

The Mikuni 447AI-391 Carburetor is equipped with a state-of-the-art, high-density flat slide needle that offers precise fuel metering. This design minimizes fuel wastage, resulting in better fuel economy and reduced emissions. The slide needle is coupled with a durable, corrosion-resistant, and easily replaceable brass float bowl, ensuring consistent fuel delivery even in the most demanding conditions.

The carburetor's main jet is adjustable, allowing riders to fine-tune the fuel-air mixture to their specific engine and riding conditions. This customization feature makes the Mikuni 447AI-391 an ideal choice for both stock and modified engines seeking improved performance and fuel efficiency.

With its sleek, modern design and precision-engineered components, the Mikuni 447AI-391 Carburetor is not just a fuel delivery system it's a performance enhancement that sets your vehicle apart. Whether you're cruising on the highway or tackling off-road trails, this carburetor delivers the power, reliability, and responsiveness you need for an unparalleled riding experience. Upgrade your ride with the Mikuni 447AI-391 Carburetor the perfect blend of style, performance, and durability.

The Mikuni 447AI-391 Carburetor is a high-performance carburetor often used in motorcycles for improved fuel efficiency and power delivery. Here are some pros and cons to consider before making a purchase.

1. Improved Performance: The Mikuni 447AI-391 offers improved performance compared to stock carburetors, with a smoother throttle response and increased power output.

2. Fuel Efficiency: This carburetor is known for its excellent fuel efficiency, which can result in better mileage and reduced fuel costs.

3. Quality Construction: The Mikuni 447AI-391 is built with high-quality materials, ensuring durability and longevity.

4. Easy Adjustability: The carburetor is easy to adjust, allowing riders to fine-tune the fuel-air mixture for optimal performance.

1. Complexity: Compared to stock carburetors, the Mikuni 447AI-391 can be more complex to install and adjust, requiring some mechanical knowledge.

2. Cost: This carburetor is more expensive than stock carburetors, which can be a significant investment for some riders.

3. Compatibility: Ensure that the Mikuni 447AI-391 is compatible with your specific bike model and year, as not all motorcycles are compatible.

The Mikuni 447AI-391 Carburetor offers significant performance benefits, improved fuel efficiency, and durability. However, it requires some mechanical knowledge for installation and adjustment, and it is more expensive than stock carburetors. If you are a performance-oriented rider with the necessary mechanical skills and are willing to invest in improving your motorcycle's performance, the Mikuni 447AI-391 Carburetor is a worthwhile investment. Otherwise, it might be better to stick with a stock carburetor.

Details:

If the original package is included it may show signs of wear. Comes as pictured. Carburetor Assembly is used and in fair condition, not original packaging. All parts are in stock and ready to ship.

Items are shipped using USPS, UPS, and FedEx. Mikuni 447AI 391 Carburetor Assembly.

part #: 447ai391 price

• $99.99

specifications cyclevintagee:

• brand: Mikuni
• mpn: 447ai-391
• part type: Carburetor

offer cyclevintagee:

• best offers: True
• availability: In Stock
• quantity: 1
• options: Ship-to-home
• started: July 13, 2025
• sold: 0

returns cyclevintagee:

• time: 30 Days
• paid by: Seller
• policy: Returns Accepted

seller cyclevintagee:

• city: Ashaway, Rhode Island
• # reviews: 108351
• rating: 99.8%

shipping cyclevintagee:

• cost: $0.00
• transit: 4-8 Days
• type: Fixed
• class: Standard
• service: Standard

general cyclevintagee:

• Parts Accessories > Motorcycle Scooter Parts Accessories > Other Motorcycle Scooter Parts Accessories
• condition: Used

payments cyclevintagee:

• wallet: Apple-pay
• credit card: Mastercard
• other

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