HOLLEY 41R643 Accelerator Pump Cam

( Brand: Holley ), ( Type: Accelerator Pump ), ( Ipn: 20-12 ), ( Manufacturer Warranty: Yes ), ( Manufacturer Part Number: 41R643 ), ( Country Of Manufacture: United States ), ( Material: Plastic )

Review HOLLEY Genuine Yellow Accelerator Pump Cam

The Holley 41463 Accelerator Pump Cam is an essential component of Holley's carburetor systems, specifically designed for use with the 4160 series vacuum secondary carburetors. This cam plays a crucial role in the proper functioning of the accelerator pump, which in turn helps to ensure optimal engine performance.

The Holley 41463 Accelerator Pump Cam is meticulously crafted from high-quality materials, ensuring both durability and reliability. Its unique design features a precise cam profile that helps to accelerate the movement of the accelerator pump diaphragm, enabling the carburetor to quickly respond to driver input. This responsiveness is particularly important during acceleration, as it helps to ensure that the engine receives the correct fuel mixture for optimal power and efficiency.

One of the key benefits of the Holley 41463 Accelerator Pump Cam is its versatility. It is compatible with a wide range of Holley carburetor models, making it an ideal choice for a variety of applications. Whether you're building a hot rod, restoring a classic car, or customizing a high-performance race engine, this accelerator pump cam can help you achieve your performance goals.

The installation process for the Holley 41463 Accelerator Pump Cam is straightforward and can be completed with relative ease. Holley provides clear and detailed installation instructions to help ensure a successful installation. Additionally, the cam is designed to fit securely in place, minimizing the risk of vibration or movement that could negatively impact engine performance.

Overall, the Holley 41463 Accelerator Pump Cam is an essential upgrade for any Holley carburetor system. Its precise design, durability, and versatility make it an invaluable addition to any engine build or performance project. With its ability to help optimize engine performance and response, this accelerator pump cam is sure to provide you with the power and efficiency you're looking for.

The Holley 41463 accelerator pump cam is a performance part designed to improve the response and power delivery of carbureted engines. Here are some pros and cons of buying this accelerator pump cam:

1. Improved Acceleration: The primary benefit of this cam is improved acceleration. By changing the geometry of the accelerator pump cam, it allows more fuel to be delivered to the engine during acceleration, which can result in better throttle response and increased power.

2. Customizable: This cam is available in various durations, allowing you to choose the one that best suits your engine and driving style.

3. Easy Installation: The installation process is relatively straightforward and can be done in a few hours with common hand tools.

4. Affordable: Compared to other performance upgrades, this cam is an affordable option for those looking to improve the performance of their carbureted engine.

1. Not Suitable for Idle: The accelerator pump cam is designed to improve performance during acceleration, but it can negatively affect idle stability. This may require additional adjustments or modifications to the carburetor.

2. Requires Tuning: For optimal performance, this cam requires tuning to ensure proper fuel delivery and idle stability. This may require the assistance of a professional tuner or extensive knowledge of carburetor tuning.

3. Limited Compatibility: This cam is specifically designed for Holley carburetors with a 4140 series accelerator pump and may not be compatible with other brands or models of carburetors.

The Holley 41463 accelerator pump cam is an affordable and effective performance upgrade for carbureted engines. It can provide improved acceleration and power delivery, but it requires some tuning and may not be suitable for all applications. If you're looking to enhance the performance of your carbureted engine and are willing to put in some tuning effort, then this cam is worth considering. However, if you're not comfortable with carburetor tuning or if your carburetor is not compatible with this cam, then it may not be the best option for you.

If you're looking to improve the performance of your carbureted engine and are comfortable with tuning, then the Holley 41463 accelerator pump cam is a great option to consider. However, if you're not comfortable with tuning or if your carburetor is not compatible, then you may want to consider other performance upgrades, such as a performance intake or exhaust system. Always be sure to consult with a professional or do thorough research before making any performance upgrades to ensure that they're suitable for your specific application.

part # 41r643 prices

• $10.20-$32.66

specifications carbcaddie:

• brand: Holley
• type: Accelerator Pump
• interchange part number: 20-12
• manufacturer warranty: Yes
• manufacturer part number: 41R643
• country of manufacture: United States
• material: Plastic

general carbcaddie:

• Car Truck Parts Accessories > Air Fuel Delivery > Carburetor Parts
• condition: New

shipping carbcaddie:

• cost: $0.00
• class: Standard, Expedited
• carrier: USPS, FedEx
• transit: 3-7 Days
• service: USPS Ground Advantage, FedEx 2Day
• type: Fixed

offer carbcaddie:

• availability: In Stock
• started: February 3, 2026
• options: Ship-to-home
• sold: 0

seller carbcaddie:

• rating: 100.0%
• # reviews: 43083

payments carbcaddie:

• other
• credit card: Visa
• wallet: Paypal

returns carbcaddie:

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

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