For Holley and Edelbrock carburetors Designed to precisely control the fuel pressure from the fuel pump to the carburetor 12-803

New 12-803 Adjustable Fuel Pressure Regulator with Gauge Compatible with Holley and Edelbrock Carburetors 4.5-9 PSI 3/8; NPTDescription     FPR05:12-803 Upgrade Adjustable Fuel Pressure Regulator, w/ Gauge,4.5-9 PSI | 3/8; NPT ports (1 in, 2 out),Replacement for Holley & Edelbrock carburetorsFPR06:12-804 Upgrade Adjustable Fuel Pressure Regulator, w/ Gauge1-4 PSI, 3/8 in NPT | No Return, InlineReplacement for Holley & Edelbrock carburetorsApplication:Fit for Holley and Edelbrock carburetors.FPR05 Reference Part Number:12-803.FPR06 Reference Part Number:12-804.FPR05 Specification:Adjustment Range: Easily adjust fuel pressure from 4-1/2 to 9 PSI.Function: Designed to precisely control the fuel pressure from the fuel pump to the carburetor.Features: The fuel regulator has a 3/8-inch NPT gauge port (1 in, 2 out) and uses a liquid-filled gauge for easy monitoring and adjustment of engine fuel pressure to meet your vehicle needs.Material: Mainly made of durable metal and ABS, resistant to high temperature, high pressure, corrosion, can withstand harsh engine environments, and is not easy to rust or malfunction.Pressure Control: The fuel pressure regulator is equipped with a regulating knob and an internal pressure-stabilizing structure. Users can flexibly adjust the supply pressure according to their needs.FPR06 Specification:Function: Adjust fuel injection volume appropriately to keep the stable pressure in the fuel system, saving fuel consumption.Adjustment Range: Easily adjust fuel pressure from 1 to 4 PSI. 0.220in (7/32in) restriction.Features: The fuel regulator has a 3/8-inch NPT gauge port (1 in, 2 out) and uses a liquid-filled gauge for easy monitoring and adjustment of engine fuel pressure to meet your vehicle needs.Material: Mainly made of durable metal and ABS, resistant to high temperature, high pressure, corrosion, can withstand harsh engine environments, and is not easy to rust or malfunction.Installation Notes: During installation, please unscrew the hexagon socket nut. After confirming that the pressure can be adjusted, screw the nut back to an appropriate position. If the hexagon socket nut is screwed too far in, it may make pressure adjustment impossible or cause oil leakage.Note:Please double check the matching information is for reference only. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.