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12-803BP Fuel Pressure Regulator 2-Port Bypass
InfoVehicle Info Needed
HOLLEYPART NUMBER: 510-12-803BP

12-803BP Fuel Pressure Regulator 2-Port Bypass

$14495
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ShippingShips on Nov 16, 2026
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$4996
Made in USA
2-Port Pressure Regulator w/Return 5-12 PSI Outlet Pressure

555-15909

2-Port Pressure Regulator w/Return 5-12 PSI Outlet Pressure

$9499

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Fuel Pressure Regulator
    Fuel Pressure Regulator
  • 2-Port Bypass
  • For Use with Gasoline
  • Adjustable from 4.5 to 9 psi
  • Ports: 3/8'' NPT Inlet/Outlet/Return
  • Natural Finish

  • Preset to 7 psi
  • Includes Mounting Bracket
  • Designed for Carburetor Use Only
  • Quieter Fuel Pump Operation (Electric Only)
    The Holley 2-port Bypass Style Fuel Pressure Regulator is an excellent choice for applications where the fuel pump will be running continuously for longer than a few minutes. A bypass style regulator allows for quieter pump operation, longer pump life and more consistent fuel pressure.

    Holley 2-Port Bypass Pressure Regulator
    This regulator is factory adjusted to 7 PSI, features 3/8'' NPT ports (1 inlet, 1 outlet, 1 bypass or return), a return line will be required back to the fuel tank for proper operation.

Part TypeFuel Pressure Regulator
Product LineHolley 2-Port Bypass Style Fuel Pressure Regulator
BrandHOLLEY
Package Height2.7
Package Width3.6
Package Length3.7
Weight0.68 PG
Part CategoryPerformance Parts
Regulator FinishNatural
Outlet Size3/8 NPT
Regulator MaterialAluminum
Outlet QuantityOne
QuantitySold individually
Boost/Vacuum Reference PortNo
Return Fitting Size (In.)3/8 NPT
RebuildableYes
Inlet AttachmentFemale Threads
Inlet Size (In.)3/8 NPT
Mounting Bracket IncludedYes
Gauge PortNo
Outlet AttachmentFemale Threads
Regulator LocationInline
Fittings IncludedNo
Inlet QuantityOne
Pressure Range (Psi)4.5-9
Part FitmentUniversal
Regulator StyleReturn
Return AttachmentFemale Threads
Vendor Part Number12-803BP
Package Qty1
Package TypeEA
No Questions
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Please click here to download the instructions PDF file

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Some parts are not legal for use in California or other states with similar laws / regulations
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