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028 in # HO121-128
Fuel your street dream
Designed for mounting small block Chevy valve cover to LS engine
NPT female threaded gauge port
Hooker Aero Chamber mufflers use a unique step principle
Holley Adjustable Fuel Injection Regulator # HO512-505 Rate_10 028 in # HO121-128Holley Adjustable Fuel Injection Regulator # HO512 505 Fuel Pressure Regulator, Aluminum, 20 75 psi, Universal, Each These adjustable Holley fuel injection regulators are capable of providing all of the fuel pressure that your high performance, fuel injected vehicle will require. They utilize a special wave spring to maintain constant fuel pressure. Pressure Range (psi): 20 75 Regulator Style: Return Regulator Location: Inline Boost Vacuum Reference
