1. Motorcycle Carburetors Offers
  2. sku: 10351288485207751
  3. KEIHIN 757B

KEIHIN 757B Carburetor Carb 73-75

fits model: Kz400, Tx500. make: Kawasaki, Yamaha. year: 1974-75.

757b Keihin 1974-75 Kawasaki Kz400 73-75 Yamaha Tx500 Carburetor Carb Oem

( Brand: Keihin ), ( Choke Type: Mechanical ), ( Type: Carburetor ), ( Manufacturer Part Number: 757B )

Review KEIHIN Kawasaki 73-75 Yamaha Carburetor Carb Oem fits KZ400 TX500 1974-75

Introducing the Keihin 757B Carburetor, a classic component that once graced the engines of iconic motorcycles from the 1970s, including the Kawasaki KZ400 (model years 1974-75) and the Yamaha TX500 (model years 73-75). This carburetor is a testament to the rich history of two-wheel engineering, offering a unique blend of performance and reliability.

The Keihin 757B Carburetor is a downdraft, constant-depression type carburetor, renowned for its ability to deliver a consistent fuel-air mixture to the engine. It features a 36mm throat diameter, making it suitable for larger displacement engines. The carburetor body is made of durable aluminum alloy, ensuring it withstands the rigors of regular use.

The Keihin 757B Carburetor comes equipped with a pair of 38mm Mikuni VM24 flat-slide throttle bodies. These throttle bodies allow for smooth, linear power delivery, enhancing the riding experience. The carburetor also includes a primary and secondary float bowl, which hold the necessary fuel for efficient combustion.

One of the most striking features of this carburetor is its adjustability. It offers multiple adjustment points, including the idle mixture screws, main jet, pilot jet, and needle jet. These adjustments enable riders to fine-tune the carburetor to their specific engine and riding conditions, ensuring optimal performance.

Additionally, the Keihin 757B Carburetor comes with a venturi needle and a power jet, which can be used to enrich the fuel mixture during deceleration or when the engine is idling. This feature helps prevent stalling and ensures a smooth riding experience.

This classic carburetor may be old, but its design continues to be revered by motorcycle enthusiasts. The Keihin 757B Carburetor is more than just a replacement part; it's a piece of motorcycling history that brings character and charm to your vintage ride. Whether you're restoring a cherished Kawasaki KZ400 or Yamaha TX500, this carburetor is an essential component that will keep your motorcycle running at its best.

Buying a used Keihin 757B carburetor for applications such as a 1974-75 Kawasaki KZ400 or a 1973-75 Yamaha TX500 can be a cost-effective solution for restoring or maintaining these classic motorcycles. However, there are pros and cons to consider before making a purchase.

Pros:

1. Affordability: Used carburetors are generally less expensive than new ones, making them an attractive option for budget-conscious riders.

2. Availability: Older motorcycle models like the KZ400 and TX500 are less likely to be produced new, so using a used carburetor is often the only viable option.

3. Authenticity: Using an original-equipment carburetor can help maintain or restore the motorcycle's originality and value.

Cons:

1. Unknown condition: When purchasing a used carburetor, it may have hidden issues that could cause performance problems or require additional repairs.

2. Compatibility: Ensure that the carburetor is compatible with your specific motorcycle model and year.

3. Adjustments: Carburetors may require adjustments, and you'll need to have the necessary tools and knowledge to make these adjustments correctly.

Conclusion:

Buying a used Keihin 757B carburetor for your 1974-75 Kawasaki KZ400 or 1973-75 Yamaha TX500 can be an affordable and authentic option, but it may come with some unknown issues. Prospective buyers should be aware of the potential risks, such as compatibility and adjustment needs, and should thoroughly inspect and test the carburetor before making a purchase.

Recommendation:

To mitigate the risks, consider purchasing from a reputable seller, such as a trusted motorcycle parts dealer or a trusted individual seller with good feedback. Inspect the carburetor thoroughly before buying, and ensure that it is compatible with your specific motorcycle model and year. If possible, test the carburetor on your motorcycle before making the purchase to ensure proper performance.

part # 757b price

  • $125.00

specifications iodacarb:

  • for models: Kz400, Tx500
  • for makes: Kawasaki, Yamaha
  • for years: 1974-75
  • brand: Keihin
  • choke type: Mechanical
  • type: Carburetor
  • manufacturer part number: 757B

offer iodacarb:

  • availability: In Stock
  • best offers: True
  • started: February 23, 2026
  • quantity: 1
  • options: Ship-to-home
  • sold: 0

payments iodacarb:

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

seller iodacarb:

  • rating: 98.7%
  • # reviews: 4108

returns iodacarb:

  • policy: No Returns

general iodacarb:

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

shipping iodacarb:

  • cost: $0.00
  • type: Fixed
  • class: Standard
  • service: Standard
  • transit: 3-8 Days
for models: kz400, tx500, for makes: kawasaki, yamaha, for years: 1974-75, choke type: mechanical, type: carburetor,
category: motorcycle parts > motorcycle scooter parts accessories > air intake fuel delivery > carburetors, sku: 10351288485207751,

Keihin 757B Is Similar To:

iodacarb logo
2 offers $125.00–$125.00 USD
  • Offer #1: $125.00 price + free delivery = $125.00* total.FREE SHIPPING
  • Offer #2: $125.00 price + free delivery = $125.00* total.FREE SHIPPING