Sale

Air and Fuel Fuel Pumps, Regulators and Components

Holley

Regulators: return style fuel pressure regulator; 7 psi; adjustable; 3/8 inch NPT inlet outlet

$157.95 $130.45 Save $27.50

SKU: H00E 12-803BP

In Stock
In Stock
Ships by Jul 31
Free Shipping over $100
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

Part #: 12-803BP

Holley fuel pressure regulators are designed to precisely control the fuel pressure from the fuel pump to the carburetor. Too much fuel pressure for a given needle and seat assembly can overload the needle and seat and may cause flooding or drivability problems. Each Holley fuel pressure regulator is fully adjustable so regulating the fuel pressure to your engines needs is a simple task. All Holley regulators are pre-set at the factory so there is no guesswork when first installing the regulator. The Holley 12-803BP fuel pressure regulator features 3/8" NPT in/out ports and a 3/8" NPT return port.

Features:

  • Adjustable fuel regulation from 4-1/2 to 9 psi
  • Preset to 7psi
  • 3/8" NPT ports (1 in, 1 out, 1 bypass or return)
  • Used in systems with a return line back to the fuel tank
  • Quieter fuel pump operation
  • Designed only for carburetor use
  • Polished finish
  • Mounting bracket included

Street/Strip Carbureted Applications Two Port Adjustable from 4.5 to 9 PSI

MIA's Description

The Holley 12-803BP Carbureted Bypass Fuel Pressure Regulator is designed to precisely control fuel pressure from the pump to the carburetor, preventing flooding and drivability issues. It is fully adjustable (4.5-9 psi), pre-set at 7 psi, and includes a mounting bracket. Features 3/8" NPT in/out/return ports for systems with a return line, ensuring quieter fuel pump operation. For carburetor use only.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandHolley
Part NumberH00E 12-803BP
Weight0.6 lb

Videos

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy