HOLLEY 12-845 Fuel Pressure Regulator Performance 090127670491

( Brand: Holley ), ( Manufacturer Part Number: 12-845 ), ( Type: Auto ), ( UPC: 090127670491 )

Review HOLLEY Fuel Pressure Regulator Performance Component

The Holley 12-845 Fuel Pressure Regulator is a high-performance component designed to deliver precise fuel pressure control for your engine. This regulator is engineered to provide optimal fuel delivery for various applications, including performance racing, hot rods, and custom builds.

The 12-845 regulator features a robust, cast aluminum housing that is both lightweight and durable. The internal components are engineered from high-quality materials, including a billet steel spring, hardened steel diaphragm, and a brass fuel inlet. These materials ensure reliable operation and long-lasting performance.

The regulator's adjustment range is from 2 to 12 psi, providing flexibility for different engine requirements. The adjustment is easy to make using the external adjustment knob, which features a clear marking for every psi increment. This feature allows for quick and accurate adjustments without the need for specialized tools.

The 12-845 regulator also includes a built-in fuel filter, which helps to remove contaminants and ensure clean fuel delivery to the engine. The filter has a replaceable element, making it easy to maintain and keep the regulator in top condition.

The Holley 12-845 Fuel Pressure Regulator is compatible with various fuel systems, including those using gasoline, methanol, and E85. It is suitable for applications with fuel pressures up to 25 psi and fuel temperatures up to 200 F (93 C).

This regulator is also designed to meet the stringent requirements of the SFI 16.1 specification, ensuring that it meets the highest standards for safety and performance. It is backed by Holley's limited lifetime warranty, giving you peace of mind and confidence in your purchase.

In summary, the Holley 12-845 Fuel Pressure Regulator is a high-performance, adjustable regulator designed for various applications, featuring a robust aluminum housing, adjustment range from 2 to 12 psi, built-in fuel filter, and compatibility with various fuel systems. It is engineered for reliability, ease of use, and long-lasting performance.

The Holley 12-845 Fuel Pressure Regulator is a popular aftermarket option for automotive enthusiasts looking to improve their fuel delivery system. Here are some pros and cons to consider before making a purchase.

1. Adjustable Fuel Pressure: The Holley 12-845 regulator allows you to adjust fuel pressure from 2 to 12 psi, giving you the flexibility to optimize fuel delivery for your specific engine setup.

2. Durable Construction: This regulator is built with a heavy-duty, anodized aluminum housing and a brass body, ensuring long-lasting performance and resistance to corrosion.

3. Easy Installation: The 12-845 regulator can be installed using common hand tools, and it replaces most factory fuel pressure regulators with minimal modification required.

4. Improved Engine Performance: By providing consistent fuel pressure, the Holley regulator can help improve engine performance, power, and fuel economy.

5. Leak-Free Design: The Holley regulator features a leak-free design, with a Viton diaphragm and O-ring seals, ensuring reliable operation and minimal fuel loss.

1. Potential Fuel Pressure Swings: Some users have reported experiencing fuel pressure swings or fluctuations when using the Holley regulator, which could potentially cause engine issues or inconsistent performance.

2. Limited Compatibility: The 12-845 regulator may not be compatible with all engine setups, so it's essential to check the Holley application guide and verify that it's suitable for your specific application.

3. Higher Cost: Compared to some factory or alternative aftermarket fuel pressure regulators, the Holley 12-845 regulator may be more expensive.

4. Requires Accurate Measuring Tools: To adjust the fuel pressure accurately, you will need a fuel pressure gauge and a torque wrench, which may add to the overall cost and complexity of the installation process.

The Holley 12-845 Fuel Pressure Regulator offers several advantages, including adjustable fuel pressure, durable construction, easy installation, and improved engine performance. However, potential issues such as fuel pressure swings, limited compatibility, higher cost, and the need for accurate measuring tools should be carefully considered before making a purchase.

If you're looking for a fuel pressure regulator that offers the flexibility to adjust fuel pressure and build a high-performance engine, the Holley 12-845 regulator could be a suitable choice. However, if you're on a tight budget or prefer a more straightforward fuel pressure regulator, you may want to explore other options. Ultimately, it's essential to weigh the pros and cons carefully and ensure that the regulator is compatible with your specific engine setup before making a purchase.

Details:

This item comes with the full manufacturers warranty. Fast Free, Shipping: Brand Holley, Part Number 12-845, UPC Code 1, Condition New. The compatibility section is not always 100% accurate.

The color, quantity, size, etc. May not be accurate.

part #: 12845 prices

• $278.95-$279.16

specifications airfueldepo:

• brand: Holley
• mpn: 12-845
• type: Auto
• upc: 090127670491

payments airfueldepo:

• other
• credit card: Discover
• wallet: Paypal

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

offer airfueldepo:

• started: August 5, 2025
• quantity: 1
• availability: In Stock
• options: Ship-to-home
• sold: 0

shipping airfueldepo:

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

seller airfueldepo:

• # reviews: 11078
• city: Flat Rock, North Carolina
• rating: 99.0%

general airfueldepo:

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

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