SPEED FX 575108BK Bk Dual Inlet Holley Ultra

( Brand: Speed Fx ), ( Part Type: Hp ), ( Manufacturer Part Number: 575108BK ), ( Item Length: 15.000 )

Review SPEED FX Bk Dual Inlet Holley Ultra Hp

The Holley FX 575108BK BK Dual Inlet Ultra HP Carburetor is a high-performance, fuel-injected carburetor designed for serious racers and hot rod enthusiasts. This carburetor features Holley's Ultra HP technology, which provides exceptional power and torque across the entire RPM range.

The FX 575108BK BK Dual Inlet Carburetor comes with two inlets, allowing for the use of two fuel sources, making it an excellent choice for applications with multiple fuel tanks or dual fuel systems. The inlets are equipped with large, 3/4-inch inlet openings, ensuring a generous fuel supply.

The carburetor's dual-plane intake manifold design provides improved idle stability and vacuum secondary throttle bodies, ensuring smooth and consistent power delivery. The secondary throttle bodies feature 1.65-inch bore sizes, providing ample airflow for high RPM applications.

The Ultra HP carburetor utilizes Holley's advanced internal components, including a high-performance diaphragm pump, high-velocity fuel pump, and a high-flow fuel filter. These components work together to provide a consistent fuel supply, even under high-demand conditions.

The FX 575108BK BK Dual Inlet Ultra HP Carburetor also comes with a number of adjustable features, including primary and secondary throttle bore sizes, idle mixtures, and primary and secondary jet sizes. These adjustments can be made using the carburetor's accessible adjustment screws and needle valves.

The carburetor is constructed from high-quality materials, including billet aluminum, and is finished in a black powder coat. It is also compatible with Holley's EFI systems, allowing for the addition of electronic fuel injection for even greater performance and tunability.

In summary, the Holley FX 575108BK BK Dual Inlet Ultra HP Carburetor is a high-performance, adjustable fuel-injected carburetor designed for serious racers and hot rod enthusiasts. With its dual inlets, large fuel inlet openings, advanced internal components, and adjustable features, this carburetor provides exceptional power and torque across the entire RPM range.

The Holley Ultra HP Fuel System, model number FX-575-108BK-BK (dual inlet), is a popular choice among performance enthusiasts for their high-performance applications. Below are some pros and cons that may help you make an informed decision about purchasing this fuel system.

1. High Flow Capability: The Holley Ultra HP Fuel System is designed to provide high fuel flow rates, making it suitable for high-performance engines that require more fuel.

2. Fuel Pressure Regulator: The integrated fuel pressure regulator allows for precise fuel pressure control, ensuring optimal engine performance.

3. Dual-Feed Design: The dual-feed design of this fuel system allows for separate fuel delivery to each bank of cylinders, improving engine balance and performance.

4. Adjustable Fuel Pressure: The fuel pressure can be easily adjusted from 2 to 100 psi using the provided adjustment tool.

5. Durable Construction: The Holley Ultra HP Fuel System is constructed from high-quality materials, ensuring durability and longevity.

1. Complex Installation: Installing the Holley Ultra HP Fuel System can be a complex process, requiring some mechanical knowledge and experience.

2. Expensive: Compared to other fuel systems on the market, the Holley Ultra HP Fuel System is expensive.

3. Requires Fuel Filter: The fuel system does not come with a fuel filter, which is an additional cost for the user.

4. May Require Fuel Pump Upgrade: Depending on the application, upgrading the fuel pump may be necessary for maximum performance.

The Holley Ultra HP Fuel System, model number FX-575-108BK-BK, offers several advantages for high-performance applications, including high fuel flow rates, adjustable fuel pressure, and a durable construction. However, it also comes with some disadvantages, such as a complex installation process, a high price point, and the requirement for additional components like a fuel filter and potentially an upgraded fuel pump.

If you are in the market for a high-performance fuel system and are willing to invest in a high-quality product, the Holley Ultra HP Fuel System is an excellent choice. However, be prepared for a complex installation process and the additional costs of components like a fuel filter and potentially an upgraded fuel pump. If you are looking for a more affordable option, there are other fuel systems on the market that may better suit your needs.

part # 575108bk prices

• $73.93-$94.75

specifications carbcaddie:

• brand: Speed Fx
• part type: Hp
• manufacturer part number: 575108BK
• item length: 15.000

general carbcaddie:

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

returns carbcaddie:

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

seller carbcaddie:

• # reviews: 57632
• rating: 98.6%

offer carbcaddie:

• started: November 6, 2025
• best offers: True
• availability: In Stock
• sold: 0
• options: Ship-to-home
• quantity: 5

shipping carbcaddie:

• type: Fixed
• cost: $0.00
• transit: 3-8 Days
• class: Standard
• service: Standard

payments carbcaddie:

• other
• wallet: Google-pay
• credit card: Diners-club

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