HONDA 16100-KT4-673 Carb Carburetor B4540

( Manufacturer Part Number: 16100-KT4-673 ), ( Type: Carburetor )

Review HONDA Oem Carb Carburetor fits XL250R 1986

The Honda 1986 XL250R Carburetor B4540, model number 16100-kt4-673, is a classic two-stroke motorcycle carburetor that delivers impressive performance and fuel efficiency. This carburetor is specifically designed for the Honda XL250R motorcycle, a bike renowned for its agility and power.

The B4540 carburetor is a 28mm flat slide carburetor, which means it uses a flat slide throttle valve for optimal air-fuel mixture delivery. The carburetor body is made of durable cast aluminum, ensuring longevity and stability even during rigorous off-road conditions.

The main jet size is 130, and the needle jet size is 55. The needle is adjustable, allowing fine-tuning of the fuel mixture for various riding conditions and altitudes. The carburetor also features a pilot jet, which ensures a proper fuel mixture for idle and low-speed operation.

The Honda XL250R Carburetor B4540 comes with a set of needles, jets, and other essential parts for easy installation and adjustment. The choke mechanism is integrated into the carburetor, making it convenient to use and simplifying the starting process.

The carburetor utilizes a Mikuni VM28 flat slide carburetor design, known for its precision and reliability. The Mikuni design ensures smooth idle and excellent power delivery throughout the rev range. The carburetor also features an idle mixture screw, which allows fine-tuning of the idle mixture for optimal engine performance.

In summary, the Honda 1986 XL250R Carburetor B4540 is a high-performance, durable, and adjustable carburetor designed specifically for the Honda XL250R motorcycle. With its 28mm flat slide design, adjustable needle, and integrated choke mechanism, this carburetor delivers impressive power, fuel efficiency, and ease of use for enthusiasts and riders alike.

A Comprehensive Analysis of the Honda XL250R B4540 Carburetor (1986)

The Honda XL250R B4540 carburetor is a popular choice among motorcycle enthusiasts and mechanics due to its reputation for reliability and performance. This analysis aims to provide a clear understanding of the pros and cons of purchasing this specific carburetor model.

1. Excellent fuel efficiency: The Honda XL250R B4540 carburetor delivers a precise fuel-air mixture, leading to improved fuel efficiency and reduced fuel consumption.

2. Smooth power delivery: This carburetor offers a smooth power delivery, ensuring a responsive and consistent riding experience.

3. Easy to adjust: The B4540 carburetor is known for its ease of adjustment, making it an ideal choice for those who prefer custom tuning.

4. Durable construction: Honda's reputation for producing high-quality components is well deserved, and the B4540 carburetor is no exception. It is designed to withstand the rigors of off-road riding and harsh environments.

5. Affordable: Compared to other high-performance carburetors, the Honda XL250R B4540 is relatively affordable, making it an attractive option for budget-conscious buyers.

1. Complex adjustment process: While the B4540 carburetor is easy to adjust overall, some riders may find the process confusing due to its numerous adjustment screws and fine-tuning requirements.

2. Requires regular maintenance: Like any carburetor, the Honda XL250R B4540 requires regular maintenance to ensure optimal performance. This can include cleaning the air filter, adjusting the jetting, and checking the float levels.

3. Limited compatibility: The B4540 carburetor is specifically designed for the 1986 Honda XL250R motorcycle. It may not be compatible with other motorcycle models or years, limiting its versatility.

4. Potential for flooding: Under certain conditions, this carburetor may flood, causing difficulty in starting the engine. This can be addressed by proper jetting adjustments and ensuring adequate ventilation.

In conclusion, the Honda XL250R B4540 carburetor is a high-performing, reliable, and durable component that offers a smooth power delivery and excellent fuel efficiency. However, it does require regular maintenance and a certain level of expertise to properly adjust. Additionally, its compatibility is limited to the specific Honda XL250R motorcycle from 1986.

If you are in the market for a motorcycle carburetor and are looking for a high-performing, reliable, and affordable option, the Honda XL250R B4540 carburetor is an excellent choice. However, it is crucial to ensure that you have the necessary skills and tools to properly maintain and adjust the carburetor to achieve optimal performance. If you are unsure, it may be worth considering a professional installation or consulting with a knowledgeable mechanic to ensure a successful installation.

part # 16100kt4673 prices

• $31.82-$249.99

specifications iodacarb:

• for models: Xl250r
• for makes: Honda
• for years: 1986
• manufacturer part number: 16100-KT4-673
• type: Carburetor

seller iodacarb:

• # reviews: 32771
• rating: 99.9%

offer iodacarb:

• sold: 0
• options: Ship-to-home
• best offers: True
• quantity: 1
• availability: In Stock
• started: May 16, 2026

shipping iodacarb:

• service: Standard
• cost: $7.99
• type: Fixed
• transit: 4-10 Days
• class: Standard

payments iodacarb:

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

returns iodacarb:

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

general iodacarb:

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

Honda 16100-KT4-673 Is Similar To:

• Honda 16100-mac-680 1997 1995-2001 Cr500r Keihin Carburetor Clean Ready To Use (51.9% similar) $30.25–$37.99. (August 26th, 2024)
• Honda 6100-463-004 1980 Goldwing 1100 Gl1100i Interstate Carb Carburetor (57.4% similar) $87.01. (August 26th, 2024)
• Honda 19126-ml7-700 Interceptor Vfr700f Vfr750f Carburetor Heat Guard Fits 1986-1987 (36.9% similar) $10.10–$12.95. (August 26th, 2024)
• Honda 16111-me4-671 1984 Cb650sc Diaphragm Carburetor Slide Throttle 16111-me5-671 (48.9% similar) $24.99–$89.00. (August 26th, 2024)
• Honda 16100-mbw-671 2000 Cbr600f4 Keihin Carbs Carburetors 16100-mbw-732 Oem (58.6% similar) $174.99–$227.67. (August 26th, 2024)
• Honda 16102-344-690 Oem Cl350 Keihin 722a Left Carburetor Body # (59.5% similar) $112.46–$800.00. (August 27th, 2024)
• Honda 16101-344-690 Oem Cl350 Keihin 722a Right Carburetor Body # (59% similar) $800.00–$2200.00. (August 27th, 2024)
• Honda 16100-413-004 1978 77-81 Hawk Ii Cb400t Oem Carburetors Carbs Intake Assy Needs Cleaning (47.7% similar) $12.17–$16.99. (August 27th, 2024)
• Honda 16100-mea-901 05 Vtx1300 S/r/c Carb / Carburetor Assembly Genuine (46.9% 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 (58.3% similar) $269.10. (August 28th, 2024)
• Honda 16100-116-004 1974 Xr75 Carb Carburetor (68.6% similar) $17.78–$150.00. (August 28th, 2024)