Black anodized. Boost Compensating Universal EFI Fuel Pressure Regulator 512-504-5. -8an & -6an o-ring style fittings included to adapt to steel braided fuel lines.
Holley 512-504-5 Boost Compensating Universal EFI Fuel Pressure Regulator
512-504-5 Boost Compensating Universal EFI Fuel Pressure Regulator
Holley 557-200, Kit Solenoid Boost Control High Performance & Racing Parts
Holley 557-201, Kit Black Aluminum Solenoid - Boost Control Performance Parts
Holley 12-880 Adjustable Billet By-Pass Fuel Regulator Adjustable 4-15 psi Boost
