Holley Adjustable Billet By-Pass Regulator 4-65 PSI - 3/8" NPT G37 Coupe Bluetooth adapter for using an

Bluetooth adapter for using an Android device to display gauges

potentially causing serious engine damage or failure

Quick and easy power/ground connections allow for a straightforward

Reinforced M6 threaded HANS/HNR inserts are mated to the shell

Holley Adjustable Billet By-Pass Regulator 4-65 PSI - 3/8" NPT G37 Coupe Bluetooth adapter for using anHolley Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley. They are precision machined from 6061 T6 billet aluminum for strength and durability. These regulators are adjustable from 4 65 psi and will handle both carbureted and EFI applications. A second pressure spring is included allowing you to increase the fuel pressure range up to 65 psi for EFI systems. They are offered with two port sizes, 3 8" NPT or