For Holley Billet Carburetor By-Pass Fuel Pressure Regulator 4-15 16-65 PSI

For Holley Billet Fuel Pressure Regulator Kit 4-65 Psi W/ 1/8 Npt Gauge E85

For Holley Billet Carburetor By-Pass Fuel Pressure Regulator 4-15 16-65 PSI

12-880 Billet Carburetor ByPass Fuel Pressure Regulator 4-15/16-65 PSI 1/8 NPT

For Holley Billet Carburetor By-Pass Fuel Pressure Regulator 4-15 16-65 PSI

12-880 Billet Carburetor ByPass Fuel Pressure Regulator 4-65 PSI 1/8 NPT Gauge

For Holley Billet Carburetor By-Pass Fuel Pressure Regulator 4-15 16-65 PSI

For HOLLEY 12-880 Return Fuel Pressure Regulator 6AN Boost Reference EFI TO CARB