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Holley 12-887KIT - Fuel Pressure Regulator Kit, Return-Style, 4.5 to 9 psi, Fittings & Gauge Included
Holley Die Cast EFI Bypass Style Fuel Pressure Regulator Kits are part of a complete line of fuel system products from Holley. The included 12-887 regulator features a die cast aluminum body and a black finish for corrosion resistance and good looks. The regulator contains 3/8" NPT in/out ports, a 3/8" NPT return port, a 1/8" NPT gauge port. In addition, 3- 3/8" NPT to -6 AN fittings, a barbed fitting for the vacuum port, a mounting bracket, and all necessary hardware are also included.

  • Die Cast Aluminum Construction
  • Adjustable from 4.5-9 psi for precise fuel pressure adjustments
  • Used in return style systems with a line back to the fuel tank
  • 3/8” NPT Inlet, Outlet, and Return Ports
  • 1/8” NPT Gauge Port and Earl's Fuel Pressure Gauge (100187ERL)
  • 3/8” NPT to -6 AN fittings (481666-BL x3)
  • Mounting Bracket Included
DETAILS
Fuel Pressure: 4.5-9 psi
Gauge Port: Yes
Inlet Port: 3/8" NPT
Outlet Port: 3/8" NPT
Regulator Style: Return-Style
Return Port: 3/8" NPT
Vacuum or Boost Port: Yes
Available downloads:
Download instructions

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  • The mounting holes in the regulator are not threaded. The screws included are self-tapping for use in installation.

Holley 12-887KIT - Fuel Pressure Regulator Kit, Return-Style, 4.5 to 9 psi, Fittings & Gauge Included
Holley Die Cast EFI Bypass Style Fuel Pressure Regulator Kits are part of a complete line of fuel system products from Holley. The included 12-887 regulator features a die cast aluminum body and a black finish for corrosion resistance and good looks. The regulator contains 3/8" NPT in/out ports, a 3/8" NPT return port, a 1/8" NPT gauge port. In addition, 3- 3/8" NPT to -6 AN fittings, a barbed fitting for the vacuum port, a mounting bracket, and all necessary hardware are also included.

  • Die Cast Aluminum Construction
  • Adjustable from 4.5-9 psi for precise fuel pressure adjustments
  • Used in return style systems with a line back to the fuel tank
  • 3/8” NPT Inlet, Outlet, and Return Ports
  • 1/8” NPT Gauge Port and Earl's Fuel Pressure Gauge (100187ERL)
  • 3/8” NPT to -6 AN fittings (481666-BL x3)
  • Mounting Bracket Included
DETAILS
Fuel Pressure: 4.5-9 psi
Gauge Port: Yes
Inlet Port: 3/8" NPT
Outlet Port: 3/8" NPT
Regulator Style: Return-Style
Return Port: 3/8" NPT
Vacuum or Boost Port: Yes

Available downloads:
Download instructions

0 of 0 reviews

Average rating of 0 out of 5 stars

Leave a review!

Share your experiences with other customers.


  • The mounting holes in the regulator are not threaded. The screws included are self-tapping for use in installation.

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Holley® has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every Monster Energy NASCAR® Cup team and nearly every NHRA® Pro–Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies we can give you the edge you need over the competition!