Professional Products 10651 Powerflow 2-Port Fuel Regulator, 4.5-9 PSI
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Q & A
What's in the Box
The Powerflow is a terrific all-around fuel pressure regulator for carbureted applications. This adjustable fuel pressure regulator is suitable for use with one dual inlet carb or two single inlet carbs on applications up to 650 HP. For higher HP, use two fuel pump regulators.
- For one carb with a dual inlet or two carbs with single inlets
- Good for up to 650 HP and 150 GPH on gas or alcohol
- One 1/2" NPT inlet port
- Two 3/8" NPT outlet ports
- Adjustable from 4.5-9 PSI
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These adjustable fuel pressure regulators from Holley can be adjusted from 4-1/2 to 9 PSI to regulate fuel pressure for various types of carburetors. Fuel pump regulator works well with Holley high performance fuel pumps. Use one fuel regulator per fuel bowl for high flow applications.
This fuel pressure regulator has a 3/8" NPT gauge port and requires reducer 617-6157 to install a fuel pressure gauge.
427-12803 Instructions (PDF)
This Holley universal low pressure fuel regulator is factory-set to 2.7 PSI, but is fully adjustable from 1 to 4 PSI. Use with standard pump only - not recommended for maximum pressure pumps. Fuel pressure regulator includes mounting bracket.
Regulator has a 3/8" NPT tapped fuel pressure gauge port and requires reducer 617-6157 to install the gauge. Fuel pump regulator has 3/8" NPT inlet/outlet ports.
427-12804 Instructions (PDF)
This universal fuel regulator regulates pressure from 4-1/2 to 9 PSI. This fuel pump regulator has one 1/2" NPT inlet and two 1/2" NPT outlet ports. Works with low pressure carbureted systems and as an alcohol fuel regulator.
- Includes mounting hardware and AN style fittings
- Alcohol compatible
- .437" (7/16") restriction
425-12704 Instructions (PDF)