HOLLEY 12-389-11 Mechanical Fuel Pump Performance 090127586518

( Brand: Holley ), ( Manufacturer Part Number: 12-389-11 ), ( Type: Auto ), ( UPC: 090127586518 )

Review HOLLEY Mechanical Fuel Pump Performance Applications

Introducing the Holley 12-389-11 Mechanical Fuel Pump, a high-performance addition to your automotive fuel system. This pump is designed for applications requiring increased fuel flow and pressure, making it an excellent choice for performance enthusiasts and hot rodders.

The Holley 12-389-11 is a mechanical diaphragm pump, meaning it utilizes a mechanical method to create fuel pressure. It boasts a robust design with a cast iron housing and a hardened steel drive gear, ensuring durability and longevity even under high-performance conditions.

This fuel pump features a large 3/4-inch inlet and outlet ports, allowing for increased fuel flow rates compared to standard pumps. The high-capacity diaphragm provides a significant increase in fuel pressure delivery, ensuring an ample fuel supply to your engine for optimal performance.

The Holley 12-389-11 Mechanical Fuel Pump includes a 1/8 NPT threaded fuel pressure regulator outlet, enabling easy installation and adjustment of fuel pressure. It is suitable for use with gasoline and methanol fuel systems and can be used in both positive and negative ground electrical systems.

This pump is compatible with Holley fuel pressure regulators, such as the 11-4100 or 11-4101, to provide precise fuel pressure control. Its versatile design makes it suitable for a wide range of applications, including muscle cars, hot rods, and race vehicles.

In summary, the Holley 12-389-11 Mechanical Fuel Pump is a high-performance addition to your fuel system, offering increased fuel flow rates and pressure for improved engine performance. Its robust design, large inlet and outlet ports, and compatibility with Holley fuel pressure regulators make it a popular choice among performance enthusiasts and hot rodders.

The Holley 12-389-11 mechanical fuel pump is a popular choice among performance enthusiasts due to its durability and high flow rate. Here are some pros and cons to consider before making a purchase:

1. High Flow Rate: This fuel pump is capable of delivering up to 150 gallons per hour, making it an excellent choice for high-performance applications.

2. Durability: The mechanical design of the pump eliminates the need for an electric motor, reducing the risk of electrical failure and making it more robust.

3. Easily Upgradable: The Holley 12-389-11 fuel pump can be easily upgraded to handle even higher flow rates by swapping out the impeller and other internal components.

4. Easy Installation: The fuel pump comes with all necessary hardware for installation and can be mounted in a variety of positions.

5. Compatibility: This fuel pump is compatible with a wide range of fuel systems and can be used in both gas and alcohol applications.

1. Loud Operation: The mechanical design of the pump can result in some noise during operation, which may be a concern for some users.

2. Requires Manual Priming: Unlike electric fuel pumps, the Holley 12-389-11 fuel pump requires manual priming before use.

3. Higher Cost: Mechanical fuel pumps tend to be more expensive than their electric counterparts, and the Holley 12-389-11 is no exception.

4. Limited Flexibility: The Holley 12-389-11 fuel pump is best suited for applications where a high flow rate is required and electrical reliability is not a concern.

In conclusion, the Holley 12-389-11 mechanical fuel pump offers several advantages for performance enthusiasts, including high flow rates, durability, and easy upgradability. However, it also comes with some disadvantages, such as loud operation, manual priming, higher cost, and limited flexibility. Ultimately, the decision to purchase this fuel pump depends on the specific needs and preferences of the user. If high flow rates and durability are top priorities, and the noise and manual priming are not deal-breakers, then the Holley 12-389-11 mechanical fuel pump is an excellent choice. However, if electrical reliability and quiet operation are more important, then an electric fuel pump may be a better option.

Details:

May not be accurate. This item comes with the full manufacturers warranty. Fast Free, Shipping: Brand Holley, Part Number 12-389-11, UPC Code 8, Condition New.

The color, quantity, size, etc. The compatibility section is not always 100% accurate.

part #: 1238911 price

• $241.95

specifications pumpunite:

• brand: Holley
• manufacturer part number: 12-389-11
• type: Auto
• upc: 090127586518

shipping pumpunite:

• class: Standard
• type: Fixed
• service: Standard
• transit: 5-8 Days
• cost: $0.00

general pumpunite:

• condition: New
• Car Truck Parts Accessories > Air Fuel Delivery > Fuel Pumps Sending Units

offer pumpunite:

• quantity: 1
• started: April 26, 2025
• sold: 0
• options: Ship-to-home
• availability: In Stock

seller pumpunite:

• rating: 98.9%
• city: Flat Rock, North Carolina
• # reviews: 10123

payments pumpunite:

• wallet: Paypal
• other
• credit card: Discover

returns pumpunite:

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

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