1. Motorcycle Carburetors Offers
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  3. KEIHIN 1391-SJ29

KEIHIN 1391-SJ29 Carburetor Carb

fits model: Kz440. make: Kawasaki. year: 1980-83.

1391-sj29 Keihin 1980-83 Kawasaki Kz440 1391 Sj29 Carburetor Carb Oem Genuine

( Brand: Keihin ), ( Choke Type: Mechanical ), ( Type: Carburetor ), ( Manufacturer Part Number: 1391-SJ29 )

Review KEIHIN 1980 83 Kawasaki 1391 Sj29 Carburetor Carb Oem Genuine fits KZ440 1980-83

The Keihin 1391-SJ29 carburetor is a classic component of the Kawasaki KZ440 motorcycle model produced between 1980 and 1983. This carburetor is a vital part of the engine system, responsible for supplying the correct air-fuel mixture to the engine for optimal performance.

The Keihin 1391-SJ29 carburetor is a constant-depression type, meaning that the float bowls are always at a fixed height above the intake ports. This design ensures consistent fuel delivery to the engine, even under various riding conditions. The carburetor features a 32mm throttle body, which controls the flow of air entering the engine.

The carburetor body is made of durable aluminum, which keeps the weight low and helps to dissipate heat generated during operation. The carburetor comes with four 28mm Mikuni-style flat slide throttle bodies, each with its own individual float bowl and jet system. The jet system is adjustable, allowing fine-tuning of the air-fuel mixture for different riding conditions and altitudes.

The carburetor also features a mechanical fuel pump, which delivers fuel from the fuel tank to the carburetor. The pump is driven by the engine via a belt and pulley system. The fuel system includes a fuel filter to prevent contaminants from entering the carburetor and causing damage.

The Keihin 1391-SJ29 carburetor comes with various mounting points and hardware, making it easy to install on the Kawasaki KZ440 motorcycle. The carburetor also comes with a set of gaskets and O-rings to ensure a proper seal between the various components.

In summary, the Keihin 1391-SJ29 carburetor is a high-performance, durable component that is essential for the proper functioning of the Kawasaki KZ440 motorcycle engine. Its constant-depression design, adjustable jet system, and durable aluminum body make it a reliable and effective solution for delivering the correct air-fuel mixture to the engine.

The Keihin 1391-SJ29 carburetor is a popular aftermarket option for the Kawasaki KZ440 motorcycle model produced between 1980 and 1983. Here are some potential pros and cons of purchasing this carburetor:

Pros:

1. Improved Performance: The Keihin carburetor is known for its smooth and responsive performance. It can help improve the bike's power delivery and fuel efficiency.

2. Easy Installation: The Keihin carburetor is often easier to install compared to the original Kawasaki carburetor. It comes with all necessary hardware and instructions.

3. Better Fuel Economy: The Keihin carburetor can help improve the bike's fuel economy by optimizing the fuel-air mixture.

4. Longevity: Keihin carburetors are known for their durability and long lifespan.

5. Adjustability: The Keihin carburetor offers more adjustability options, allowing riders to fine-tune the bike's engine settings to their preferences.

Cons:

1. Cost: The Keihin carburetor can be more expensive than the original Kawasaki carburetor.

2. Learning Curve: The Keihin carburetor may require some learning and adjustment to get the best performance out of it.

3. Complexity: The Keihin carburetor is more complex than the original carburetor, which may require additional maintenance and care.

4. Potential Compatibility Issues: While the Keihin carburetor is generally compatible with the KZ440, there may be some minor differences in the bike's engine configuration that could require additional modifications.

Conclusion:

The decision to purchase a Keihin 1391-SJ29 carburetor for a Kawasaki KZ440 ultimately depends on individual preferences and priorities. If you prioritize improved performance, fuel economy, and adjustability, and are willing to invest in a more expensive and complex carburetor, then this may be a good option for you. However, if you prefer a simpler and more cost-effective solution, then sticking with the original Kawasaki carburetor may be the better choice.

Recommendation:

If you are looking to upgrade the carburetor on your Kawasaki KZ440 and prioritize improved performance and adjustability, then the Keihin 1391-SJ29 carburetor is a solid choice. However, it is essential to ensure that you have the necessary knowledge and resources to install and maintain the carburetor, as well as the budget to cover the additional cost. If you are unsure about the installation process or have any doubts, it may be a good idea to consult with a professional mechanic or carburetor specialist.

part # 1391sj29 prices

  • $12.00-$14.00

specifications iodacarb:

  • for models: Kz440
  • for makes: Kawasaki
  • for years: 1980-83
  • brand: Keihin
  • choke type: Mechanical
  • type: Carburetor
  • manufacturer part number: 1391-SJ29

seller iodacarb:

  • # reviews: 4108
  • rating: 98.7%

offer iodacarb:

  • quantity: 1
  • options: Ship-to-home
  • sold: 0
  • best offers: True
  • availability: In Stock
  • started: February 22, 2026

general iodacarb:

  • condition: Used
  • Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Carburetors

returns iodacarb:

  • policy: No Returns

shipping iodacarb:

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

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for models: kz440, for makes: kawasaki, for years: 1980-83, choke type: mechanical, type: carburetor,
category: motorcycle parts > motorcycle scooter parts accessories > air intake fuel delivery > carburetors, sku: 10328545560007751,

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