HONDA 16100-437-671 Keihin Carburetor P4051

( Part Type: Carburetor ), ( Manufacturer Part Number: 16100-437-671 ), ( Vintage Part: Yes ), ( Country/region Of Manufacture: Japan ), ( Universal Fitment: No )

Review HONDA Keihin Carburetor Assembly fits XL125S

The Honda XL125S motorcycle comes equipped with a reliable and efficient Keihin P4051 carburetor, model number 16100-437-671. This carburetor is designed specifically for the XL125S, ensuring optimal performance for this particular motorcycle.

The Keihin P4051 carburetor is a flat-slide design, which permits a more precise fuel-air mixture for efficient combustion. This results in improved engine power and fuel economy. Additionally, this carburetor features a petcock-controlled fuel petcock which allows for easy fuel shut-off, enhancing safety during maintenance or storage.

The main jet (Jet A) size for this carburetor is 128, while the main jet needle is numbered 6. The needle jet size is 55. These specifications allow for the appropriate fuel delivery for the XL125S motorcycle under various riding conditions. The idle jet (Jet I) is 55 and the pilot jet (Jet P) is 35, ensuring smooth and consistent idle operation.

The needle and jet kit for this carburetor (sold separately) can be used for fine-tuning the fuel mixture to suit specific riding conditions or rider preferences. Regular maintenance and carburetor modifications might require replacement or adjustment of these parts for optimal performance.

Moreover, this Keihin P4051 carburetor is characterized by its high quality and durability. It is constructed with reliable materials and precise machining, allowing for smooth operation and long-lasting functionality. The CV (Constant Vacuum) unit ensures consistent vacuum operation and smoother idle and throttle response.

In addition, this carburetor offers ease of installation, making it an appealing choice for riders. The replacement process is straightforward, ensuring minimal downtime when swapping out the old carburetor with a new one. It's always suggested to follow the manufacturer's instructions for the installation process to ensure proper seating and accurate adjustments for optimal performance.

Pros and Cons of Buying Honda XL125S Keihin P4051 Carburetor

The Honda XL125S Keihin P4051 carburetor is a common aftermarket part for Honda XL125 motorcycles. Here's a balanced analysis of the potential advantages and disadvantages to help you decide if buying this carburetor is a good choice for your motorcycle.

1. Improved Performance: The Keihin P4051 is known for its efficient mixing and metering of air-fuel mixtures. This is essential for optimal engine performance, especially suited for small two-stroke engines like the Honda XL125S.

2. Reliability and Durability: The Keihin P4051 carburetor is a well-engineered piece of equipment, renowned for its robust construction, making it a long-lasting replacement for the stock carburetor.

3. Easy Installation: Bikers often praise the ease of installation for the P4051 carburetor. It's also compatible with various aftermarket performance kits, broadening the customization possibilities for your motorcycle.

4. Enhanced Fuel Economy: By providing proper air-fuel mixtures, the Keihin P4051 carburetor may help enhance the fuel economy of your XL125S, letting you travel further between tank refills.

1. Cost: Compared to OEM (Original Equipment Manufacturer) carburetors, aftermarket parts like the Keihin P4051 may come with a higher price tag. However, many bikers feel that the performance improvements are worth the investment.

2. Learning Curve: As with any performance upgrade, installing and tuning a new carburetor might require some learning. Adjusting and synchronizing the idle and mixture settings can be a time-consuming task.

3. Complex Adjustments: Some users report having to contend with fine-tuning the carburetor to achieve the desired performance. Find a reputable mechanic or follow detailed instructions to minimize the hassle.

4. Potential Over-Synchronization: While the Keihin P4051 is a great performer, over-synchronizing the carburetor's idle mixtures can produce undesirable side effects such as poor idling, rough running, or even engine damage. Adhere to accurate tuning instructions to prevent these issues.

The Keihin P4051 carburetor is a sought-after performance upgrade for the Honda XL125S. Its efficiency and reliability make it an attractive option for bikers craving improved engine performance and enhanced fuel economy. However, the learning curve and potential for complex adjustments are factors to consider before deciding on the purchase. Weighing its pros and cons will help guide you in making an informed decision that suits your motorcycling experience and goals.

My advice would be to consider the benefits the carburetor offers and the skill level you possess in tuning it. If you're a casual or inexperienced rider, you may be better off sticking with the stock carburetor or seeking professional assistance to install an aftermarket part. But if you're an experienced rider with tuning knowledge and desire improved performance, the Keihin P4051 carburetor could provide an enjoyable boost for your Honda XL125S motorcycle. Always remember to follow proper tuning instructions and practice caution when handling performance upgrades.

part # 16100437671 prices

• $89.95-$240.00

specifications iodacarb:

• for models: Xl125s
• for makes: Honda
• part type: Carburetor
• manufacturer part number: 16100-437-671
• vintage part: Yes
• country/region of manufacture: Japan
• universal fitment: No

shipping iodacarb:

• transit: 2-6 Days
• cost: $12.30
• service: USPS Ground Advantage, UPS Ground, FedEx Ground or FedEx Home Delivery, USPS Priority Mail
• class: Standard, Expedited
• type: Calculated
• carrier: USPS, UPS, FedEx

seller iodacarb:

• # reviews: 4602
• rating: 99.9%

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offer iodacarb:

• options: Ship-to-home
• sold: 0
• best offers: True
• started: January 21, 2025
• availability: In Stock
• quantity: 1

general iodacarb:

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

returns iodacarb:

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

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