1. Motorcycle Intake & Fuel Systems Deals
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  3. MIKUNI 003.589

MIKUNI 003.589 Needle Jet 389-R8

003.589 Mikuni Needle Jet 389-r8

( Brand: Mikuni ), ( Manufacturer Part Number: 003.589 ), ( Part Type: Jet )

Review MIKUNI Needle Jet

Mikuni 003.589 Needle Jet Carburetor (389-R8)

The Mikuni 003.589 Needle Jet Carburetor (389-R8) is a precision-engineered fuel delivery system, expertly crafted by Mikuni, a leading name in the world of high-performance carburetors. This carburetor is specifically designed for applications that demand superior fuel atomization and consistency, making it an ideal choice for enthusiasts seeking top-tier performance from their engine.

The Mikuni 003.589 Needle Jet Carburetor (389-R8) boasts a unique needle jet design, which ensures precise fuel atomization and mixture delivery. The needle jet system offers excellent idle stability, along with a smooth and responsive power delivery throughout the entire RPM range. The carburetor is equipped with a durable, chrome-plated aluminum body, ensuring resistance to corrosion and providing a sleek, polished look.

This carburetor features Mikuni's advanced idle circuit, which allows for quick and easy adjustments to idle speed. The idle mixture screw is conveniently located on the top of the carburetor for easy access, while the main jet and power jet are adjustable to accommodate a wide range of fuel and air conditions.

The Mikuni 003.589 Needle Jet Carburetor (389-R8) is designed to work seamlessly with various engine sizes and configurations, thanks to its adaptable design. It features a 38mm venturi, making it suitable for high horsepower applications, and the R8 flange allows for easy installation on a wide variety of motorcycles.

In conclusion, the Mikuni 003.589 Needle Jet Carburetor (389-R8) is a high-quality, performance-oriented fuel delivery system. Its needle jet design ensures precise fuel atomization and consistent power delivery, while its adaptable design and easy adjustability make it a versatile choice for a wide range of motorcycle applications. For those seeking a reliable, high-performance carburetor, the Mikuni 003.589 Needle Jet Carburetor (389-R8) is an excellent option.

The Mikuni 003.589 Needle Jet 389-R8 Carburetor is a popular choice among motorcycle enthusiasts, especially for vintage and classic bike restorations. Here are some pros and cons to help you decide if this carburetor is suitable for your needs:

Pros:

1. Authenticity: This Mikuni carburetor is an original part, ensuring a genuine and accurate fit for your motorcycle.

2. Quality: Mikuni carburetors are known for their durability and reliability, providing smooth and consistent performance.

3. Adjustability: The needle jet design allows for precise fuel mixture adjustments, enabling optimal engine performance.

4. Wide Compatibility: This carburetor is compatible with a variety of motorcycle makes and models, making it a versatile choice.

Cons:

1. Price: Compared to some aftermarket alternatives, the Mikuni 003.589 can be more expensive.

2. Availability: Finding a new Mikuni carburetor may be challenging, as they are primarily produced for the Japanese domestic market.

3. Parts Availability: While Mikuni carburetors are generally well-supported, finding spare parts for older models can be difficult.

4. Learning Curve: Adjusting the carburetor may require some understanding of the fuel-air mixture and engine tuning, which can be intimidating for beginners.

Conclusion:

If you prioritize authenticity, quality, and adjustability, the Mikuni 003.589 Needle Jet 389-R8 Carburetor is an excellent choice. However, be prepared for a potentially higher cost and a learning curve when it comes to tuning. If you are on a budget or prefer an easier-to-tune alternative, you may want to consider an aftermarket carburetor.

Recommendation:

For those seeking an authentic and high-quality carburetor for their vintage or classic motorcycle, the Mikuni 003.589 Needle Jet 389-R8 Carburetor is a solid recommendation. For those looking for a more budget-friendly or easier-to-tune option, researching other carburetor brands and models may yield more suitable choices.

Details:

Brand: MIKUNI, model Number: 003.589. I need to exchange an item. This is helpful if you are buying multiple items. Primary hex main jet.

Credit or Debit Card. Parts without fitment are to be assumed universal and may require vehicle modification.

part #: 003589 prices

  • $21.08-$25.99

specifications intakefuelmotorcycle:

  • brand: Mikuni
  • mpn: 003.589
  • part type: Jet

offer intakefuelmotorcycle:

  • quantity: 9
  • options: Ship-to-home
  • started: May 9, 2025
  • availability: In Stock
  • sold: 0

shipping intakefuelmotorcycle:

  • transit: 3-5 Days
  • class: Standard
  • cost: $0.00
  • type: Fixed
  • service: Standard

payments intakefuelmotorcycle:

  • other
  • wallet: Google-pay
  • credit card: Discover

seller intakefuelmotorcycle:

  • # reviews: 63573
  • city: Indiana, US
  • rating: 99.5%

returns intakefuelmotorcycle:

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

general intakefuelmotorcycle:

  • condition: New
  • Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Other Air Intake Fuel Delivery
part type: jet,
category: motorcycle parts > motorcycle scooter parts accessories > air intake fuel delivery, sku: 18417329582674502,
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5 offers $21.08–$25.99 USD
  • New. Offer #1 priced at $21.08 + $0.00 shipping estimate = $21.08* total. Credit or Debit Card MIKUNI NEEDLE JET.FREE SHIPPING
  • New. Offer #2 priced at $21.08 + $0.00 shipping estimate = $21.08* total. MANUFACTURER PART NUMBER . PART TYPEAir & Fuel.FREE SHIPPING
  • New. Offer #3 priced at $25.99 + $0.00 shipping estimate = $25.99* total. 389 Series Needle Jet for TM32-TM41 Carburetor.FREE SHIPPING
  • New. Offer #4 priced at $23.10 + $0.00 shipping estimate = $23.10* total. Tusk Motorcycle Rim Lock 1.40/1.60" For SHERCO 125 SE-R 2017. MIKUNI NEEDLE JET .FREE SHIPPING
  • New. Offer #5 priced at $21.08 + $0.00 shipping estimate = $21.08* total. FREE SHIPPING

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