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HOLLEY 12-820 Fuel Pump Check Valve Kit 090127657386

12-820 Holley Fuel Pump Check Valve Kit

( Brand: Holley ), ( Manufacturer Part Number: 12-820 ), ( Type: Electric Fuel Pump Rebuild Kits ), ( Universal Fitment: Yes ), ( California Prop 65 Warning: True ), ( UPC: 090127657386 )

Review HOLLEY Fuel Pump Check Valve Kit

The Holley 12-820 Fuel Pump Check Valve Kit is a crucial component for ensuring the proper functioning of your fuel system in classic cars or hot rods. This kit is specifically designed for Holley 0-60 series, 115 lph, 110 lph, 115 lph Max-Flow, and Ultra Max-Flow fuel pumps.

The heart of this kit is the check valve, which is essential for preventing fuel from flowing back into the fuel tank when the engine is off. The Holley 12-820 kit includes two fuel check valves, each with a 3/8 NPT thread connection. These check valves are designed to open when fuel pressure is present and close when pressure drops, ensuring that fuel only flows in the intended direction.

The Holley 12-820 kit also includes two O-rings, which help create a seal between the check valves and the fuel pump or fuel tank. These O-rings are made of high-quality, durable rubber to ensure a long-lasting seal and prevent fuel leaks.

The kit comes with detailed installation instructions to make the process as straightforward as possible. The instructions include clear diagrams and step-by-step instructions, ensuring that even those with minimal mechanical experience can install the check valves with confidence.

The Holley 12-820 Fuel Pump Check Valve Kit is made from high-quality materials, including brass bodies and stainless steel springs, to ensure durability and resistance to corrosion. The brass bodies are anodized for added protection against wear and tear, while the stainless steel springs provide strength and reliability.

Overall, the Holley 12-820 Fuel Pump Check Valve Kit is an essential addition to any classic car or hot rod fuel system. Its high-quality design, durability, and ease of installation make it a must-have for anyone looking to ensure the optimal performance and reliability of their fuel system.

The Holley 12-820 Fuel Pump Check Valve Kit is a popular aftermarket solution for addressing fuel system issues in various applications, particularly those using Holley fuel pumps. Here are some potential pros and cons of purchasing this kit:

Pros:

1. Improved Fuel System Performance: The check valve kit is designed to prevent fuel from flowing back into the fuel tank when the fuel pump is off. This can lead to improved fuel system performance, as the fuel pump does not have to work against the pressure of the fuel in the tank when it is trying to prime.

2. Reduced Fuel System Noise: The check valve can help reduce the amount of fuel sloshing in the fuel tank, which can lead to a quieter fuel system. This can be particularly helpful for those who are sensitive to noise or who are using a fuel system in a quiet environment.

3. Easy Installation: The kit includes all of the necessary components for installation, making it a relatively straightforward process for the average do-it-yourselfer. The installation process typically involves disconnecting the fuel lines from the fuel pump, installing the new check valve, and then reconnecting the fuel lines.

4. Affordable: Compared to other fuel system upgrades, the Holley 12-820 Fuel Pump Check Valve Kit is an affordable solution for improving fuel system performance and reducing fuel system noise.

Cons:

1. May Not Fit All Applications: While the Holley 12-820 Fuel Pump Check Valve Kit is a popular choice for many applications, it may not fit all fuel pumps or fuel systems. It is important to ensure that the kit is compatible with your specific application before making a purchase.

2. Potential for Leaks: As with any fuel system component, there is a risk of leaks when installing the Holley 12-820 Fuel Pump Check Valve Kit. Proper installation and the use of quality seals and gaskets can help minimize this risk.

3. May Not Eliminate All Noise: While the check valve can help reduce fuel system noise, it may not eliminate all noise. Other factors, such as fuel pressure and the condition of other fuel system components, can also contribute to fuel system noise.

Conclusion:

The Holley 12-820 Fuel Pump Check Valve Kit is a cost-effective and relatively easy solution for improving fuel system performance and reducing fuel system noise. However, it is important to ensure that the kit is compatible with your specific application and to install it properly to minimize the risk of leaks. While the check valve may not eliminate all fuel system noise, it can help reduce the amount of fuel sloshing in the tank, leading to a quieter fuel system overall.

Recommendation:

If you are experiencing fuel system issues, such as poor performance or excessive noise, the Holley 12-820 Fuel Pump Check Valve Kit is a worthwhile consideration. It is an affordable and straightforward solution that can help improve fuel system performance and reduce fuel system noise. Before making a purchase, be sure to verify that the kit is compatible with your specific fuel pump and fuel system, and follow proper installation procedures to ensure a successful installation.

Details:

Includes lower gasket, check valve, spring and inlet screen filter. Replacement fuel pump check valve kit for 12-150 HP electric Check. Part # 12-820 Condition New Brand Holley Sold Each Details Info Replacement fuel pump check valve kit for 12-150 HP electric

part #: 12820 prices

  • $30.00-$47.75

specifications airfueldepo:

  • brand: Holley
  • mpn: 12-820
  • type: Electric Fuel Pump Rebuild Kits
  • universal fitment: Yes
  • california prop 65 warning: True
  • upc: 090127657386

seller airfueldepo:

  • # reviews: 334311
  • rating: 99.4%
  • city: Bowling Green, Kentucky

offer airfueldepo:

  • options: Ship-to-home
  • started: October 25, 2025
  • availability: In Stock
  • sold: 0

payments airfueldepo:

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

general airfueldepo:

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

returns airfueldepo:

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

shipping airfueldepo:

  • class: Standard
  • cost: $15.99
  • transit: 3-5 Days
  • type: Fixed
  • service: UPS Ground
  • carrier: UPS
type: electric fuel pump rebuild kits, universal fitment: yes, california prop 65 warning: true,
category: auto parts > car truck parts accessories > air fuel delivery, sku: 11126634505241983,

Holley 12-820 Is Similar To:

airfueldepo logo
5 offers $30.00–$47.75 USD
  • Offer #1: $30.00 price + $10.19 shipping estimate = $40.19* total. Holley check valve kit.+$10.19 shipping
  • Offer #2: $47.75 price + $0.00 shipping estimate = $47.75* total. Sounds like dirt may have gotten in the relief valve. Fits Holley 12-150 HP Electric Fuel Pump.FREE SHIPPING
  • Offer #3: $47.75 price + $0.00 shipping estimate = $47.75* total. Fits Holley 12-150 HP Electric Fuel Pump; Replacement fuel pump check valve kit for 12-150 HP electric fuel pump;.FREE SHIPPING
  • Offer #4: $47.75 price + $0.00 shipping estimate = $47.75* total. This kit and/or our gerotor kit p/n 12-821 service Holley's 12-150 H. Replacement fuel pump check valve kit for 12-150 HP electric fuel pump.FREE SHIPPING
  • Offer #5: $47.75 price + $0.00 shipping estimate = $47.75* total.FREE SHIPPING

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