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Item #:
4121812
Holley 12-833 80 GPH Mechanical Fuel Pump
81% of respondents would recommend this to a friend
Item #:
4121812
XCD 599
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Imported from USA store
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Order now and get it around Friday, October 09
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This mechanical fuel pump delivers free-flow outputs from 80 to 130 GPH, perfect for stock or mildly modified engines.
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What Stands Out
High Flow Rate
The Holley 80 GPH Mechanical Fuel Pump delivers a robust flow rate, ensuring optimal fuel supply for high-performance engines, enhancing overall engine power and efficiency for automotive enthusiasts.
Durable Construction
Engineered with high-quality materials, this fuel pump guarantees long-lasting performance and reliability, standing up to the demanding conditions of motorsports and daily driving.
Easy Installation
Designed for straightforward installation, the Holley fuel pump comes with all necessary components, making it accessible for both professional mechanics and DIY enthusiasts to upgrade fuel systems effortlessly.
Product Details
| Fit Type | Vehicle Specific Fit |
| Compatible with Vehicle Type | Ford V8 engines |
| Part Interchange Info | 12-833 |
| Auto Part Position | Unknown |
| Outlet Connection Type | Barbed connector |
| Inlet Connection Type | 5/16 inch OD x 0.875 inch ID |
| Gas Type | Methanol |
| Mounting Type | Bracket Mount |
| Operation Mode | Mechanical |
| Product Grade | New |
| Automotive Fit Type | Vehicle Specific Fit |
| OEM Equivalent Part Number | 12-833 |
| Connector Type | Barbed connector |
| Item Dimensions | 10.2 x 6.4 x 4.2 inches (25.9 x 16.3 x 10.7 cm) |
| Item Weight | 1.4 pounds (640 grams) |
| Outlet Connection Size | 0.88 inches |
| Inlet Connection Size | 0.88 inches |
| Specification Met | OE |
| Brand Name | Holley |
| Manufacturer Part Number | 12-833 |
| Global Trade Identification Number | 00090127020333 |
| Unit Count | 1 Count |
| Manufacturer | Holley |
| Number of Packs | 1 |
| UPC | 090127020333 |
| Number of Items | 1 |
| Included Components | Holley 12-833 80 GPH Mechanical Fuel Pump |
| Model Number | HOL 12-833 |
| Material Type | Aluminum |
| Body Material | Aluminum |
| Product Style | Gerotor |
| Brand | Holley |
| Vehicle Service Type | Ford V8 engines |
| Item dimensions L x W x H | 10.2 x 6.4 x 4.2 inches (25.9 x 16.3 x 10.7 cm) |
| Material | Aluminum |
Dangerous Goods
To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.
What's in the box
Holley 12-833 80 GPH Mechanical Fuel Pump
Who Should Buy?
-
Classic Car Enthusiasts
Ideal for classic car restorations needing reliable fuel delivery in mechanical systems without modern electronic components.
-
Custom Project Builders
Perfect for builders of hot rods or custom vehicles seeking high-flow fuel pumps for modified engine setups.
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Budget-Conscious DIYers
An affordable solution for DIY mechanics looking to install quality mechanical fuel pumps without breaking the bank.
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Modern Vehicles
Not suitable for modern fuel-injected systems that require electronic pumps for proper fuel delivery and efficiency.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is the flow rate of the Holley 12-833 mechanical fuel pump?
Answer: The Holley 12-833 mechanical fuel pump features a flow rate of 80 gallons per hour (GPH). This high flow rate is essential for high-performance engines, ensuring that they receive an adequate supply of fuel for optimal operation. It’s especially beneficial in racing or heavily modified vehicles where fuel demands exceed standard capacities. Utilizing this fuel pump in such setups not only maximizes power output but also enhances engine response during acceleration. -
Question:
What type of fuel is compatible with the Holley 12-833 fuel pump?
Answer: The Holley 12-833 pump is compatible with gasoline and alcohol-based fuels. This versatility means you can use it in various applications, including street performance and racing setups. For those utilizing ethanol blends, the pump's design accommodates alternative fuels, providing excellent performance and reliability. This makes it an ideal choice for enthusiasts looking to customize their fuel setup based on their specific engine needs. -
Question:
How does the Holley 12-833 mechanical fuel pump work?
Answer: The Holley 12-833 operates using a diaphragm mechanism that enables it to draw fuel from the tank and deliver it to the engine. When the engine is in operation, the pump’s diaphragm is activated, creating a vacuum that pulls fuel into the chamber. This method ensures a constant and reliable fuel supply, which is crucial for maintaining engine performance, especially under high-load conditions. Understanding this operation can help when diagnosing fuel delivery issues or optimizing overall engine performance. -
Question:
What are the installation requirements for the Holley 12-833 fuel pump?
Answer: Installing the Holley 12-833 fuel pump requires basic mechanical knowledge and a few tools. It should be mounted in a location that allows for easy fuel line connections and proper positioning relative to the fuel tank. Ensure that it is placed below the tank for gravity feed, which aids in the pump's operation. Additionally, using proper fittings and hoses that meet fuel standards will prevent leaks and maintain efficiency. This setup is particularly important in performance applications demanding reliable fuel delivery. -
Question:
Can the Holley 12-833 fuel pump be used in diesel applications?
Answer: The Holley 12-833 mechanical fuel pump is designed specifically for gasoline applications and is not suitable for diesel fuel systems. Diesel pumps operate under a different pressure and construction requirement due to the nature of diesel fuel. Using it in diesel applications can lead to failures, inefficiencies, or damage. For diesel engines, it’s advisable to select a pump specifically engineered for diesel fuel to ensure performance and longevity. -
Question:
What is the pressure rating of the Holley 12-833 fuel pump?
Answer: The Holley 12-833 fuel pump delivers fuel at a pressure rating of around 6 to 8 PSI. This pressure range is optimal for carbureted engines, ensuring sufficient fuel delivery without flooding the engine. Maintaining the correct pressure is essential for performance tuning; too low can cause stalling, while too high can lead to excessive fuel consumption or engine damage. This makes the pump suitable for a variety of applications, including street rods and classic cars. -
Question:
What are the main features of the Holley 12-833 fuel pump?
Answer: The Holley 12-833 mechanical fuel pump is known for its robust construction, high flow rate of 80 GPH, and compatibility with different fuels. Its diaphragm design and low-profile structure allow for reliable and consistent fuel delivery, making it ideal for high-performance vehicles. Additionally, the pump features an easy-mount design that aids in straightforward installation. These attributes collectively enhance the pump's performance for modified engines where reliability and efficiency are crucial. -
Question:
Is the Holley 12-833 pump suitable for street use?
Answer: Yes, the Holley 12-833 pump is suitable for street use, especially for modified or performance-oriented vehicles. Its flow rate and pressure allow for a reliable fuel supply, ensuring that your engine performs optimally under various driving conditions. Many enthusiasts use it in street rods or vintage cars to provide improved performance over stock fuel systems. This versatility makes it a popular choice among those looking to enhance their vehicle’s capabilities while maintaining street legality. -
Question:
What can I do if the Holley 12-833 pump fails to deliver fuel?
Answer: If the Holley 12-833 pump fails to deliver fuel, first check the fuel lines for obstructions or leaks, as these can hinder fuel flow. Inspect the pump's wiring and connections to ensure they are secure and free from corrosion. If the pump feels too hot or makes unusual noises, it might be failing mechanically. Additionally, verify that the pump is adequately mounted and positioned to allow proper fuel supply from the tank. Diagnosing these issues can often lead to a simple fix and restore reliable engine performance. -
Question:
Where can I buy Holley 12-833 80 GPH Mechanical Fuel Pump?
Answer: You can purchase the Holley 12-833 80 GPH Mechanical Fuel Pump from Ubuy, which offers a reliable platform for acquiring automotive parts. Ubuy provides access to a wide selection of automotive products, ensuring you can find the right components for your vehicle needs with ease and confidence.
Holley Mechanical Fuel Pumps HOL 12-833 Editorial Review
The Holley HOL 12-833 Street Performance Mechanical Fuel Pump has garnered a mixed reception from customers, highlighting a notable divide between initial impressions and long-term performance. On one hand, many users find the installation process straightforward, with reports of a good fit for a variety of vehicles such as the 1969 Ford Ranchero and the 1965 Ford Falcon. For some, it has proven to be a value addition that functions as intended—reliably pumping fuel without immediate issues. However, this positive experience is overshadowed by critical feedback concerning quality and reliability. Several customers have reported significant problems after limited use, with cases of cracked pumps resulting in oil leaks soon after installation. These defects have led to frustration over the product’s durability and Consequential issues with returning or exchanging the faulty components once they are discovered past the return window. The absence of essential fittings and accessories, which one would expect with a fuel pump of this standard, has also disappointed many users. Additionally, the lack of any identifying marks on the pump itself has raised concerns about its authenticity and manufacturing quality, leading to a reduction in trust in the Holley brand. Overall, customers seem to appreciate the utility of the pump when it works properly but are alarmed by the apparent decline in quality control and packaging. The combination of good initial performance but frequent long-term failures presents a troubling outlook for potential buyers. **
Customer Reviews & Ratings
14 customers ratings
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5 Star
56%
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4 Star
0%
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3 Star
10%
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2 Star
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1 Star
24%
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Pros
- Easy installation and fitting across various models.
- Functions as intended when operational.
- Generally viewed as a good value.
Cons
- Reports of leaking and cracking after minimal use.
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8 September 2026 · via Trustpilot
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XCD 599
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Features & Benefits
- Designed for stock or mildly modified engines.
- Free-flow output ranges from 80 to 130 GPH.
- 360-degree rotatable body for easy mounting.
- Pre-set shut-off pressure of 7.5 PSI.
- Heavy-duty construction for high RPM operation.
- Not compatible with methanol, alcohol fuels, or fuel injection systems.
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