HONDA 723B Keihin Ali Carburetor

( Machine Type: Street Motorcycle ), ( Items Included: Gasket, Float Bowl Screws ), ( Manufacturer Part Number: 723B ), ( Material: Aluminum, Steel, Stainless Steel, Brass, Alloy ), ( Vintage Part: Yes ), ( Engine Type: 4-stroke ), ( Choke Type: Mechanical ), ( Type: Carburetor ), ( Oe/oem Part Number: Ali 723b ), ( Features: Twin ), ( Country/region Of Manufacture: Japan ), ( Universal Fitment: No )

Review HONDA Keihin Ali Carburetor And fits CB450 CL450 1972–1974

The Honda 723B Keihin ALI (Automatic Lean-Adjusting) carburetor was used on various Honda motorcycles during the 1970s, including the CB450 and CL450 models produced between 1972 and 1974. This carburetor is known for its advanced design that ensured optimal fuel-air mixture for improved engine performance and fuel efficiency.

The Honda 723B Keihin ALI carburetor is a constant-depression type, which means the float bowls are always at a constant level, ensuring a consistent fuel supply to the engine. The carburetor features a 32mm throttle body with a unique design that includes a power jet located below the main jet. This power jet is designed to provide additional fuel during rapid acceleration, ensuring smooth power delivery.

The ALI system is the most notable feature of this carburetor. The Automatic Lean-Adjusting system uses a float bowl venturi to monitor the engine's air-fuel ratio. When the engine is idling, the float bowls are filled to the top, providing a rich fuel mixture. However, when the engine is revved up, the ALI system opens a bypass valve, allowing excess fuel to escape, resulting in a leaner fuel mixture. This ensures that the engine runs efficiently at all RPMs, providing optimal power and fuel economy.

The Honda 723B Keihin ALI carburetor also features a choke mechanism that can be activated by a lever on the left side of the handlebar. This system enriches the fuel mixture during cold starts, making it easier to get the engine running in cold conditions.

Overall, the Honda 723B Keihin ALI carburetor is a sophisticated and advanced piece of engineering. Its unique features, such as the power jet and the ALI system, make it a favorite among Honda motorcycle enthusiasts. If you're looking to restore or modify a classic Honda motorcycle from the 1970s, this carburetor is a must-have component.

The Honda CB450/CL450 motorcycles produced between 1972 and 1974 came equipped with the Keihin AL1 or AL2 carburetors. Here are some pros and cons associated with buying a Honda CB450/CL450 with a Keihin AL1 carburetor for vintage motorcycle enthusiasts:

1. Authenticity: Keihin carburetors were original equipment on many Honda motorcycles during the 1970s, making the presence of a Keihin AL1 carburetor an attractive feature for collectors and purists.

2. Performance: The Keihin AL1 carburetor is known for its smooth power delivery and efficient fuel consumption, which can lead to improved performance and fuel economy compared to aftermarket alternatives.

3. Availability: Keihin carburetors are widely available both new and used, ensuring that replacement parts are readily accessible for those who need them.

4. Technically Challenging: Working on a vintage motorcycle with a Keihin carburetor can be a rewarding experience for those who enjoy the technical aspects of motorcycle maintenance.

1. Complexity: The Keihin AL1 carburetor is more complex than some aftermarket alternatives, which can make it more difficult to set up and tune properly.

2. Cost: New Keihin carburetors can be more expensive than aftermarket alternatives, and the cost of restoration or repair can add up quickly.

3. Age: The age of the motorcycle and the carburetor can lead to wear and tear, which may require regular maintenance and repairs to keep the bike running smoothly.

The decision to buy a Honda CB450/CL450 with a Keihin AL1 carburetor ultimately comes down to personal preference and priorities. For those who value authenticity, performance, and the challenge of working on a complex system, the presence of a Keihin carburetor can be an attractive feature. However, for those who prioritize ease of use, lower cost, and minimal maintenance, an aftermarket alternative may be a better choice. Ultimately, it is essential to weigh the pros and cons carefully and consider the specific needs and goals of your vintage motorcycle project.

If you are considering buying a Honda CB450/CL450 with a Keihin AL1 carburetor, it is essential to do your research and ensure that the bike is in good condition before making a purchase. Look for a reputable seller, and be prepared for the potential cost and complexity of maintaining the carburetor. If you are not confident in your ability to work on the carburetor yourself, consider seeking the help of a professional mechanic or joining a local motorcycle club or forum for advice and support.

part # 723b prices

• $24.95-$97.63

specifications iodacarb:

• for models: Cb450, Cl450
• for makes: Honda
• for years: 1972-1974
• machine type: Street Motorcycle
• items included: Gasket, Float Bowl Screws
• manufacturer part number: 723B
• material: Aluminum, Steel, Stainless Steel, Brass, Alloy
• vintage part: Yes
• engine type: 4-stroke
• choke type: Mechanical
• type: Carburetor
• oe/oem part number: Ali 723b
• features: Twin
• country/region of manufacture: Japan
• universal fitment: No

seller iodacarb:

• rating: 100.0%
• # reviews: 10

shipping iodacarb:

• type: Calculated
• transit: 3-8 Days
• carrier: USPS
• cost: $9.88
• service: USPS Priority Mail
• class: Expedited

payments iodacarb:

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

returns iodacarb:

• policy: No Returns

offer iodacarb:

• availability: In Stock
• quantity: 1
• best offers: True
• started: April 15, 2025
• options: Ship-to-home
• sold: 0

general iodacarb:

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

Honda 723B Is Similar To:

• Honda 16100-mac-680 1997 1995-2001 Cr500r Keihin Carburetor Clean Ready To Use (41.1% similar) $30.25–$37.99. (August 26th, 2024)
• Honda 6100-463-004 1980 Goldwing 1100 Gl1100i Interstate Carb Carburetor (35.6% similar) $87.01. (August 26th, 2024)
• Honda 19126-ml7-700 Interceptor Vfr700f Vfr750f Carburetor Heat Guard Fits 1986-1987 (35.4% similar) $10.10–$12.95. (August 26th, 2024)
• Honda 16111-me4-671 1984 Cb650sc Diaphragm Carburetor Slide Throttle 16111-me5-671 (34.5% similar) $24.99–$89.00. (August 26th, 2024)
• Honda 16100-mbw-671 2000 Cbr600f4 Keihin Carbs Carburetors 16100-mbw-732 Oem (46% similar) $174.99–$227.67. (August 26th, 2024)
• Honda Vb2ag 82 1982 Cb750k Cb750 Carburetorcarb Keihin (39.3% similar) $115.43. (August 27th, 2024)
• Honda 16102-344-690 Oem Cl350 Keihin 722a Left Carburetor Body # (47.2% similar) $112.46–$800.00. (August 27th, 2024)
• Honda 16101-344-690 Oem Cl350 Keihin 722a Right Carburetor Body # (46.9% similar) $800.00–$2200.00. (August 27th, 2024)
• Honda 16100-mea-901 05 Vtx1300 S/r/c Carb / Carburetor Assembly Genuine (34.3% similar) $66.97–$158.98. (August 27th, 2024)
• Honda 16100-kcy-771 2002 98-04 Xr400r Xr400 Oem Keihin Pd Carb Carburetor Intake Throttle Body (39.5% similar) $269.10. (August 28th, 2024)
• Honda 16100-116-004 1974 Xr75 Carb Carburetor (35.2% similar) $17.78–$150.00. (August 28th, 2024)