Holley Fuel Pumps & Regulators

Fuel Pressure Regulators, Die-Cast By-Pass, Adjustable, 4.5-9 psi, Return Style, In-line, 3/8 in.-NPT Ports, 1/8 in.-NPT Gauge Ports, Aluminum, Each

Part Number: HLY-12-881

4.19 out of 5 stars ( 54 )

Estimated Ship Date: Today

Fuel Pumps, Mighty Mite, Electric, 7 psi, 32 gph Free Flow Rate, 1/8 in. NPT Female Threads Inlet/Outlet, Each

Part Number: HLY-12-427

4.14 out of 5 stars ( 169 )

Estimated Ship Date: Today

Fuel Pressure Regulators, Carburetor Bypass Style, Return, 4.5-9 psi, Black, One 3/8 in. NPT Female Inlet, One 3/8 in. NPT Female Outlet, Each

Part Number: HLY-12-887

4.11 out of 5 stars ( 83 )

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, Black, Each

Part Number: HLY-12-886

4.35 out of 5 stars ( 20 )

Estimated Ship Date: Today

Fuel Pumps, Mechanical, 80 gph, 7.5 psi, 1/4-NPT Female Thread, Inlet and Outlet, Aluminum, Silver, Rotatable, Chevy, 262-400ci, Gen I, Each

Part Number: HLY-12-834

3.67 out of 5 stars ( 72 )

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 Pumps, Mighty Mite, Electric, 4 psi, 25 gph Free Flow Rate, 1/8 in. NPT Female Threads Inlet/Outlet, Each

Part Number: HLY-12-426

4.58 out of 5 stars ( 36 )

Estimated Ship Date: Today

Fuel Pumps, Electric, Inline External, 10 psi, 34 gph Free Flow Rate, 1/8 in. NPT Female Threads Inlet/Outlet, Each

Part Number: HLY-12-428

3.62 out of 5 stars ( 26 )

Estimated Ship Date: Today

Fuel Pumps, Mighty Mite, Electric, 1.5-2.5 psi, 25 gph Free Flow Rate, 1/8 in. NPT Female Threads Inlet/Outlet, Each

Part Number: HLY-12-425

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Today

Pressure Regulator Mounts, Billet Regulator Bracket, Fuel Pressure, Aluminum, Black Anodized, Universal Design, for Model 4150, 4160 Series, Each

Part Number: HLY-20-275

3.14 out of 5 stars ( 7 )

Estimated Ship Date: Today

Fuel Pump Components, Extension, for In-Tank Retrofit Modules, Bracket, Tube, 12-15 in. Deep Tank installation, Each

Part Number: HLY-12-161

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

Fuel Pressure Regulators, High Pressure, 0-43 psi, No-Return, Boost, Vacuum Port, Stock Inlet and Outlet, Gold Color, Buick, GN, GNX, 3.8L, Each

Part Number: HLY-512-515

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Rebuild Kits, Fuel Pressure Regulator, Service Kit, Diaphragm, Spring, Instructions, for Regulator 12-846, Kit

Part Number: HLY-12-826

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

Fuel Pump Rebuilds, Diaphram Assembly, Mechanical Pump, Low Pressure, for 12-289-30, 12-327-30, 12-454-30, Kit

Part Number: HLY-12-755

Not Yet Reviewed

Estimated Ship Date: Today

Rebuild Kits, Fuel Pressure Regulator, Diaphragm Only, for Pressure Regulator 12-803BP, Kit

Part Number: HLY-12-818

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Pressure Regulator Mounts, Billet Regulator Bracket, Fuel Pressure, Aluminum, Clearcoat Anodized, Universal Design, for Model 4150, 4160 Series, Each

Part Number: HLY-20-259

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Fuel Pickup Components, Hydramat Install, Disc Magnets, Kit

Part Number: HLY-16-205

Not Yet Reviewed

Estimated Ship Date: Today

Fuel Pump Rebuilds, Mechanical, Repair, Gaskets, Rubber Pulsator, Hose Barb, Bronze Breather Vent, for Ultra HP Pumps, Kit

Part Number: HLY-12-757

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Rebuild Kits, Fuel Pressure Regulator, Service Kit, Diaphragm, Spring, Instructions, for Regulator 12-848, Kit

Part Number: HLY-12-827

Not Yet Reviewed

Estimated Ship Date: Today

Regulator Repair Parts, Diaphragm, Holley Pro-Jection, Gasoline, Kit

Part Number: HLY-512-1

Not Yet Reviewed

Estimated Ship Date: Nov 3, 2025 if ordered today

• Drop Ship
• Special Order

Brackets, Fuel Pressure Regulator, Billet Aluminum, Black Anodized, for Model 4150, 4160, Each

Part Number: HLY-20-120

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

End Plate Conversion Kits, 12-3000, Single Inlet, -10 AN O-ring, Billet Aluminum, Natural, Each

Part Number: HLY-12-3001

Not Yet Reviewed

Estimated Ship Date: Oct 30, 2025 if ordered today

• Drop Ship
• Special Order

End Plate Conversion Kits, 12-3000, Duel Inlet, -10 AN O-ring, Billet Aluminum, Natural, Each

Part Number: HLY-12-3002

Not Yet Reviewed

Estimated Ship Date: Oct 30, 2025 if ordered today

• Drop Ship
• Special Order