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- 1-4 PSI 12-804 12804 Low Fuel Pressure Regula...
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Item #:
119439292
1-4 PSI 12-804 12804 Low Fuel Pressure Regulator Fit for Holley Quick Fuel Carburetor Carb
78% of respondents would recommend this to a friend
Item #:
119439292
XCD 123
Price Details
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Imported from USA store
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Order now and get it around Monday, September 28
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Fuel pressure regulator regulates fuel pressure to avoid overloading of valve needle and pressure, ensuring optimal performance for your engine.
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What Stands Out
Precise Pressure Control
Provides accurate low fuel pressure regulation between 1-4 PSI, ensuring optimal performance for Holley and Quick Fuel carburetors, enhancing engine reliability.
Durable Construction
Crafted from high-quality materials, this regulator withstands harsh conditions, ensuring longevity and dependable operation in various environments.
Easy Installation
Designed for straightforward mounting and compatibility, allowing users to upgrade their fuel system quickly without professional help, making it ideal for DIY enthusiasts.
Product Details
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.
Who Should Buy?
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Car Enthusiasts
Ideal for car enthusiasts modifying their vehicles with Holley or Quick Fuel carburetors for optimized fuel delivery.
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Racing Applications
Perfect for racing setups requiring precise low fuel pressure regulation to enhance performance and efficiency.
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Restoration Projects
Suitably fits classic car restoration projects, ensuring the carburetor functions efficiently with low fuel pressure needs.
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High Power Engines
Not suitable for high power engines needing higher fuel pressure or different fuel delivery systems for optimal performance.
Product Description
1-4 PSI 12-804 12804 Low Fuel Pressure Regulator Fit for Holley Quick Fuel Carburetor Carb
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What is the function of the 1-4 PSI Low Fuel Pressure Regulator?
Answer: The 1-4 PSI Low Fuel Pressure Regulator is designed to regulate fuel pressure for carburetors like Holley and Quick Fuel. This ensures that the fuel delivery system maintains optimal pressure for consistent performance. By controlling the pressure within the specified range, you can enhance fuel atomization, leading to improved combustion efficiency and engine performance. -
Question:
Is the 12804 Low Fuel Pressure Regulator easy to install?
Answer: Yes, the 12804 Low Fuel Pressure Regulator is designed for straightforward installation. With basic mechanical skills and the right tools, you can fit this regulator onto your carburetor setup in no time. Following the product manual and ensuring proper alignment will help streamline the process, particularly for users familiar with carbureted engines. -
Question:
What type of carburetors is compatible with this fuel pressure regulator?
Answer: This regulator is compatible specifically with Holley and Quick Fuel carburetors. These carburetors typically function optimally within a 1-4 PSI fuel pressure range, making this regulator an ideal choice to enhance their performance. It's crucial to check your carburetor specifications to ensure compatibility, allowing for a seamless integration in your fuel system. -
Question:
What are the advantages of using a low fuel pressure regulator?
Answer: Utilizing a low fuel pressure regulator like the 12804 can significantly enhance engine performance. It helps prevent fuel flooding, ensures the correct fuel-to-air ratio, and optimizes combustion efficiency. This is particularly important for modified engines or those seeking optimal performance, helping avoid issues like rough idling and stalling under heavy loads. -
Question:
Can this regulator affect my engine's performance?
Answer: Absolutely, installing the 1-4 PSI Low Fuel Pressure Regulator can greatly impact engine performance. By maintaining the ideal fuel pressure, it facilitates effective combustion, thereby enhancing throttle response and overall power output. This is especially noticeable during high RPMs or when accelerating, ensuring your engine runs smoothly and efficiently. -
Question:
What materials is the 12804 Low Fuel Pressure Regulator made from?
Answer: The 12804 Low Fuel Pressure Regulator is typically constructed from high-quality aluminum, which offers durability and resistance to corrosion. This ensures longevity and reliability in various environmental conditions, making it suitable for both street and racing applications. Additionally, the design helps in maintaining consistent performance over extended periods. -
Question:
How do I know if my fuel pressure is too high?
Answer: You can determine if your fuel pressure is too high by using a fuel pressure gauge. If you notice performance issues such as flooding, hard starting, or poor acceleration, it's a sign that the pressure may be outside the optimal range. Regularly monitoring these readings can help maintain engine health and prevent potential damage to your carburetor. -
Question:
What is the difference between high and low fuel pressure regulators?
Answer: High fuel pressure regulators are usually designed for fuel injection systems and maintain higher pressure, whereas low fuel pressure regulators, like the 12804, are tailored for carburetor applications. Low-pressure regulators optimize fuel delivery for carbureted engines, providing a smoother and more controlled fuel flow, crucial for achieving the right air-fuel mixture. -
Question:
How do I adjust the pressure on the 12804 regulator?
Answer: Adjusting the pressure on the 12804 Low Fuel Pressure Regulator typically involves turning an adjustment screw on the regulator itself. This must be done with the engine running and may require a fuel pressure gauge to monitor changes accurately. Proper adjustments allow you to fine-tune your fuel system for optimal performance, catering to specific engine modifications or conditions. -
Question:
Where can I buy 1-4 PSI 12-804 12804 Low Fuel Pressure Regulator?
Answer: You can purchase the 1-4 PSI 12-804 12804 Low Fuel Pressure Regulator from Ubuy in Saint Lucia. Ubuy offers a reliable platform with various options and convenient shopping features to help you get the exact product you need for your carburetor application.
TEXVOKIE Pressure Regulators Editorial Review
The aftermarket fuel pressure regulator has garnered mixed reviews from customers, reflecting a blend of satisfaction and frustration. On the positive side, many users have praised its easy installation and effective functionality, with reports of it successfully maintaining fuel pressure for their carburetors. One user noted that after three months of use, the product performed reliably without any issues, suggesting good durability. However, some concerns were raised about the regulator’s pressure adjustment capabilities, as several customers found it difficult to achieve the desired settings. The inability to lower the pressure below 2.5 psi was especially highlighted, and there were complaints about leaks due to cheap o-rings. A significant criticism came from a customer who experienced a cracked casting, raising concerns about overall workmanship and quality control. Despite these issues, one user mentioned that this product performed better than a competing name-brand version, indicating it offers good value for the price. Additionally, the lightweight Construction was noted, although cautious handling during installation was advised to prevent cracking. In summary, the product appears to be a viable option for those looking for an affordable fuel pressure regulator that delivers on its promise of performance, but potential buyers should be cautious of quality inConsistencies and pressure adjustment limitations. **
Customer Reviews & Ratings
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Pros
- Simple installation
- Effective performance, maintaining fuel pressure reliably
- Lightweight Construction
- Better performance reported compared to a name-brand counterpart
Cons
- Difficulty adjusting pressure below 2.5 psi
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9 September 2026 · via Trustpilot
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“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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Features & Benefits
- Professionally designed for Holley Carburetor and other carburetors.
- Features adjustable fuel adjustment ranges from 1-4 psi.
- Constructed from high-strength, rustproof zinc alloy for durability.
- Includes one fuel pressure regulator and three screws for easy installation.
- Maintains optimal fuel pressure to prevent overflows and drivability issues.
- OE Number 12-804 ensures a perfect match with your vehicle.
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