Holley fuel pressure regulators are designed to precisely control the fuel pressure from the fuel pump to the carburetor. Too much fuel pressure for a given needle and seat assembly can overload the needle and seat and may cause flooding or drivability problems.

Each Holley fuel pressure regulator is fully adjustable so regulating the fuel pressure to your engines needs is a simple task. All Holley regulators are pre-set at the factory so there is no guesswork when first installing the regulator.

The Holley 12-704 fuel pressure regulator features 1/2 inch NPT in/out ports. 1 1/2 NPT to An -8 and 2 1/2 NPT to An -6 For An style fittings included

Features and Benefits:

• Adjustable fuel regulation from 4-1/2 to 9 psi One 1/2 inch NPT inlet and two 1/2 inch NPT outlet ports .437 inch (7/16 inch) restriction Includes mounting hardware and an style fittings Alcohol compatible

Associated Comments:

• Regulator is compatible with Diesel #1 and Diesel #2.

Details:

• Adjustable: Yes
• Color: Shiny
• Fuel Type: Diesel | Gasoline
• Fuel System: Gasoline
• Gauge Included: No
• Gauge Port Included: Yes
• Grade Type: Performance
• Inlet Gender: Female
• Inlet Port Diameter: 1/2 NPT Inch
• Inlet Port Quantity: 1.0
• Inlet Size: 1/2 inch NPT
• Inlet Type: NPT
• Material: Aluminum
• Maximum Pressure: 9 Pounds per Square Inch
• Minimum Pressure: 4.5 Pounds per Square Inch
• Mounting Bracket Included: Yes
• Mounting Type: Inline
• Outlet Gender: Female
• Outlet Port Diameter: 1/2 NPT Inch
• Outlet Port Quantity: 2.0
• Outlet Size: 1/2 inch NPT
• Outlet Type: NPT
• Port Quantity: 2.0
• Pressure Range: 4.5-9 PSI
• Rebuildable: Yes
• Style: Non-Return
• Warranty: Manufacturer's Limited 90 Day Warranty