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Holley

HOLLEY 4500 Billet Fuel Press. Regulator w/EFI Bypass

MPN: 12-848 Catalog #: 001509054 Category: Fuel Pressure Regulators Check Vehicle Fitment

Product Details

Fuel Pressure Regulator - Dominator Billet - 15 to 65 psi - In-Line - 10 AN Female O-Ring Inlet - 10 AN Female O-Ring Outlet - 8 AN O-Ring Return - 1/8 in NPT Port - Bypass - Aluminum - Black / Clear Anodized - Diesel / E85 / Gas - Each

Fuel Pressure Regulator-Dominator Billet-15 to 65 psi-In-Line-10 AN Female O-Ring Inlet-10 AN Female O-Ring Outlet-8 AN O-Ring Return-1/8 in NPT Port-Bypass-Aluminum-Black / Clear Anodized-Diesel / E85 / Gas-Each

Dominator EFI Billet Fuel Pressure Regulator; EFI; 15-65 PSI; 10AN O-Ring Inlet/Outlet; 8AN O-Ring Return; Gas/Diesel/E85; Black Anodized;

Holley Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley. They are precision machined from 6061-T6 billet aluminum for strength and durability. They feature a black bright dip anodized body and a clear bright dip anodized top for corrosion resistance and good looks. Holley Billet Fuel Pressure Regulators are available in a variety of configurations.

Fitment: Holley® Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley®. They are precision machined from 6061-T6 billet aluminum for strength and durability. They feature a black bright dip anodized body and a clear bright dip anodized top for corrosion resistance and good looks. The Holley 12-848 fuel pressure regulator features(1)-10 AN O-ring inlet; (1)-10 AN O-ring outlet; (1)-8 AN O-ring return.

DETAILS:

  • Holley Performance Emission Code 5: This part is legal for sale or use on Emissions Controlled Vehicles; Uncontrolled (Non-Emissions Controlled) Vehicles; and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations
  • Fuel Injection Pressure Regulator
  • Dominator EFI Billet Fuel Pressure Regulator
  • 1/8in. Npt Gauge Port
  • Adjustable From 15-65 PSI For Precise Fuel Pressure Adjustment
  • Constructed Of Billet Aluminum For Good Looks
  • Mounting Bracket Included
  • Use With Electric Pumps Only
  • Used In Systems With A Return Line Back To Tank
  • BILLET FP REG; ADJ 40-70 PSI 10AN IN/OUT
  • FuelInjPresrRgultr

Part Number 12-848 SPECS:

  • Color: Black Anodized
  • Fuel System Type: EFI
  • Fuel Type: Gasoline / Diesel / E85
  • Material: Aluminum
  • Pressure: 15-65 PSI
  • Return Size: 8AN O-Ring
  • Style: Bypass
  • WARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive Harm-www.P65Warnings.ca.gov
  • WARNING CA Proposition 65: Yes

Vehicle Fitment

Universal or product-specific fitment. Please review the product details and contact us if you need help confirming fitment before ordering.

Product Specs

Brand
Holley
Part Number
12-848
Catalog Number
001509054
Product Line
Fuel Pressure Regulators
Category
Fuel Delivery
Type
Fuel Pressure Regulators
UPC / Barcode
090127670521
Box Length
5.52 in
Box Width
4.91 in
Box Height
2.77 in
Ship Weight
2.00 lb
Freight / LTL
175.00
Ship Alone
No
Air Restricted
No
Hazmat
No
Chemical
No
Prop 65
B
Non-Returnable
No
Case Quantity
1
Kit
No

Shipping & Availability

Current status 2 Available - Ready to ship
Estimated timing Usually ships within 24hrs

This item is showing available distributor inventory. Most in-stock performance parts ship quickly, but timing can vary by warehouse, vendor cut-off time, holidays, and carrier pickup.

Inventory shown: 2 available as of 7/22/2026.

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