HOLLEY FR-4779S Double Pumper Carburetor 090127649077

( Brand: Holley ), ( Manufacturer Part Number: FR-4779S ), ( Part Type: Carburetor ), ( UPC: 090127649077 )

Review HOLLEY Double Pumper Carburetor Factory Refurbished

The Holley FR-4779S Double Pumper Carburetor is a high-performance fuel delivery system designed for enthusiasts seeking optimal engine response and power. This carburetor is part of Holley's Ultra LP Series, which is known for its advanced features and exceptional reliability.

The FR-4779S is a double pumper design, meaning it utilizes two fuel pumps to ensure consistent fuel delivery under all operating conditions. Each pump delivers fuel through its own independent fuel bowl, reducing the likelihood of fuel starvation and promoting smooth idling. The fuel pumps are also electronically controlled, allowing for easy integration with electronic fuel pressure regulators and other modern fuel systems.

The carburetor features Holley's Ultra LP Dominator bowl design, which offers increased fuel capacity and improved fuel distribution. The bowl is also vented, reducing the risk of fuel vapor lock and ensuring a consistent fuel level. The bowl gaskets are made of a high-performance material for improved sealing and longevity.

The FR-4779S also includes Holley's Ultra LP Progressive Link Secondary system, which utilizes progressive link secondary throttle shafts to provide a more responsive and consistent power curve. This design allows for precise fuel metering and improved engine performance, especially during acceleration.

The carburetor is constructed from high-quality aluminum and includes a billet aluminum base plate for added strength and durability. The base plate also features multiple mounting points for easy installation and adjustment. The carburetor body is coated with a durable black powdercoat finish for a professional appearance and added protection against the elements.

The FR-4779S Double Pumper Carburetor is compatible with a wide range of fuel systems, including electric, mechanical, and returnless systems. It is also available in a variety of base circle sizes to accommodate different engine applications. With its advanced features, exceptional reliability, and customizable options, the Holley FR-4779S Double Pumper Carburetor is an excellent choice for any high-performance engine build.

The Holley FR-4779S Double Pumper Carburetor is a popular choice among automotive enthusiasts for its ability to deliver reliable and consistent fuel delivery for high-performance applications. Here are some pros and cons of buying this carburetor:

1. Improved Fuel Delivery: The Holley FR-4779S Double Pumper Carburetor utilizes a unique design where two pumps feed the main jets, allowing for improved fuel delivery under high-performance conditions.

2. Adjustable Features: This carburetor comes with various adjustable features, including main jet size, power valve, and idle mixture, allowing users to fine-tune the fuel mixture for their specific engine setup.

3. Durability: Holley carburetors are known for their durability and ability to withstand the demands of high-performance applications.

4. Wide Compatibility: The Holley FR-4779S Double Pumper Carburetor is compatible with a wide range of engines and applications, making it a versatile choice for many automotive enthusiasts.

5. Availability of Accessories: Holley offers a wide range of accessories for this carburetor, including air cleaners, fuel bowls, and various gaskets, making it easy to customize the carburetor for specific applications.

1. Complexity: Compared to single-barrel carburetors, the Holley FR-4779S Double Pumper Carburetor is more complex to install and tune, requiring more time and expertise.

2. Cost: Due to its advanced features and design, the Holley FR-4779S Double Pumper Carburetor is more expensive than some other carburetor options.

3. Fuel Pressure: Some users have reported issues with maintaining the correct fuel pressure with this carburetor, which can result in poor performance or engine damage if not addressed.

The Holley FR-4779S Double Pumper Carburetor is an excellent choice for automotive enthusiasts looking for improved fuel delivery and adjustable features for their high-performance engine applications. However, its complexity and higher cost may deter some buyers. It is important to ensure that the installation and tuning are done correctly to avoid any potential fuel pressure issues.

If you are looking for a high-performance carburetor with advanced features and the ability to deliver consistent fuel delivery under demanding conditions, the Holley FR-4779S Double Pumper Carburetor is an excellent choice. However, it is recommended that you have the necessary expertise and resources to install and tune the carburetor correctly to ensure optimal performance and avoid any potential fuel pressure issues. Additionally, consider the cost and whether it fits within your budget.

Details:

Buyer pays return shipping. A signature is required on all UPS orders over $750.

part #: fr4779s prices

• $178.99-$699.95

specifications carbcoon:

• brand: Holley
• mpn: Fr-4779s
• part type: Carburetor
• upc: 090127649077

returns carbcoon:

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

seller carbcoon:

• city: Bowling Green, Kentucky
• # reviews: 18057
• rating: 99.3%

payments carbcoon:

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

general carbcoon:

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

offer carbcoon:

• availability: In Stock
• quantity: 1
• sold: 0
• started: December 10, 2025
• options: Ship-to-home

shipping carbcoon:

• service: UPS Ground
• class: Standard
• transit: 2-6 Days
• carrier: UPS
• cost: $0.00
• type: Fixed

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