Holley Adjustable Fuel Injection Regulators

Fuel Pressure Regulator, Die-Cast EFI Bypass/Return, Adjustable, 15-60 psi, Inline, 3/8 in.-NPT Main Ports, 1/8 in.-NPT Ports, Aluminum, Black, Each

Part Number: HLY-12-886

4.18 out of 5 stars ( 22 )

Estimated Ship Date: Today

Fuel Pressure Regulator, Die-Cast EFI Bypass/Return, Adjustable, 15-60 psi, Inline, 3/8 in.-NPT Main Ports, 1/8 in.-NPT Ports, Aluminum, Chrome, Each

Part Number: HLY-12-882

2.67 out of 5 stars ( 12 )

Estimated Ship Date: Today

Fuel Pressure Regulators, Stock Replacement, Adjustable, 35-65 psi, Billet Aluminum, Clear Coat, Spring, Diaphragm, Chevy, Chevy, Pontiac, 5.0L, Each

Part Number: HLY-512-501

4.91 out of 5 stars ( 11 )

Estimated Ship Date: Today

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Fuel Pressure Regulators, Adjustable, 15-65 psi, Inline, -8 AN Inlet and Outlet, -6 AN Return, Female Thread, O-Ring Cut, Aluminum, Black, Each

Part Number: HLY-512-504-5

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Estimated Ship Date: Feb 16, 2026 if ordered today

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