new carburator showed up said i need a regulator. need one with less pressure under 1.5 to 4 pounds its for a 1955 fhead motor, any sugestions?

It depends on what fuel pump you are running. You need to check that pressure first. That will determine if you need to run a regulator or not.

How do i change pressure?

Hi, You loosen the nut at the top, then turn the stud with an allen head, to get the desired pressure. You will need a gauge to read the pressure. Tony

can this item be used on a mechanical fuel pump

Yes, that is to regulate a set rate of fuel pressure to a carburetor. This is a low pressure fuel regulator for a carburetor engine, not high pressure fuel injected engine. Some pumps look alike. Some are 1lb to 4lb max. You need to know what range your carburetor needs/likes. Holley, Edelbrock, etc. Most Holley carb like 6-6.5lb. Most Edelbrock carbs like 5-5.5 to 6.5max lbs of fuel pressure. Again, depends on your setup and what other mods you have.

Does this come with hose fittings?

No, it doesn't. The regulator has female pipe threads for the inlet and outlets. There is a wide range of fitting types that can be used, depending on your exact application. That is left up to you.

Brand	Quick Fuel Technology
Fit Type	Universal Fit
Vehicle Service Type	Gasoline-Powered Vehicles
Item dimensions L x W x H	14.7 x 9.1 x 5.8 Centimeters
Material	Aluminium
Item Weight	336 g
Style	Modern
Specification Met	OE
Auto Part Position	Unknown
Outlet Connection Size	0.38 Inches
Inlet Connection Size	0.25 Inches
Outlet Connection Type	Threaded
Body Material	Aluminium
Inlet Connection Type	Threaded
Gas Type	Petrol
Mounting Type	bracket mount
Operation Mode	Automatic
Product Grade	New
Global Trade Identification Number	00849804006968
OEM Part Number	30-803QFT
Manufacturer	Quick Fuel Technology
UPC	849804006968
Model	Quick Fuel Pressure Regulator
Product Dimensions	14.73 x 9.14 x 5.84 cm; 335.66 g
Item model number	30-803
Exterior	Machined
Manufacturer Part Number	30-803QFT
Country of Origin	USA

Quick Fuel 30-803QFT Fuel Pressure Regulator

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