JavaScript Disabled

Your JavaScript appears to be disabled. JavaScript is necessary for various functions, such as order checkout, to operate on this web site. Please ensure that JavaScript is enabled.

Outdated Internet Browser Detected

Your web browser appears to be out of date. Soon you will not be able to create a secure connection to our web site using TLS 1.0. Please upgrade your browser from current version( ). Learn more about TLS.

Always Save the Most at Summit!
In-Store Pickup Location

Holley HP Billet Fuel Pressure Regulators 12-880

Fuel Pressure Regulator, 4-65 PSI, Black and Clear Anodized, Return Style, Universal, Each

Estimated Ship Date: Loading...Processing Today Would you rather pick it up? Select Location

  • Order this item and get free delivery and handling on your entire order! Offer excludes truck freight and oversize fees. Valid on orders shipped in the contiguous United States.

Brand: Holley

Manufacturer's Part Number: 12-880

Part Type: Fuel Pressure Regulators

Product Line: Holley HP Billet Fuel Pressure Regulators

Summit Racing Part Number: HLY-12-880

UPC: 090127734988

Pressure Range (psi): 4-65

Regulator Style: Return

Regulator Location: Inline

Boost/Vacuum Reference Port: Yes

Boost/Vacuum Rise Ratio: 1:1

Gauge Port: Yes

Mounting Bracket Included: Yes

Fittings Included: No

Rebuildable: Yes

Inlet Quantity: One

Inlet Attachment: Female threads

Inlet Size: -6 AN O-ring

Outlet Quantity: One

Outlet Attachment: Female threads

Outlet Size: -6 AN O-ring

Return Attachment: Female threads

Return Fitting Size: -6 AN O-ring

Regulator Material: Billet aluminum

Regulator Finish: Black/Clear anodized

Quantity: Sold individually.

In-Store Pickup: Choose In-store pick-up (OH, NV, GA, TX) on our web site.

Part of Holley's complete line of fuel system products, Holley HP billet fuel pressure regulators are available in a variety of configurations for carbureted or fuel injected engines. Some versions are even adaptable to either carburetors or EFI. They allow you to upgrade a carbureted system to EFI without replacing the fuel pressure regulator.

All HP billet fuel pressure regulators feature a 2-port design, provide for precise fuel pressure adjustments, and are available in your choice of demand (no return line) or by-pass (with a return line) styles. Depending on the model, they are for use only with electric fuel pumps, or with either mechanical or electric pumps. Designed for street/strip applications, they are CNC-machined from 6061-T6 billet aluminum for strength and have bright dip anodized black bodies with clear dip anodized tops for corrosion resistance and good looks. Whatever your fuel system needs, Holley has you covered.

Depending on model, features may include:

* Adjustable from 4 to 65 psi for use with EFI or carburetors
* 4.5 to 9 psi adjustment range for use with carburetors only
* EFI-only models are adjustable from 15 to 65 psi
* Two port sizes available, 3/8 in. NPT or -6 AN inlet/outlet and return (where applicable)
* Fitting for manifold reference
* 1/8 in. NPT gauge port
* Boost reference--1:1


Questions & Answers Ask a Product Question

Can this regulator be used to regulate a factory EFI pump down to Carb pressures?

Asked by CHRIS on January 22, 2019


Yes, however, you would need to keep the return line in the systems as well.

Holley Holley Answer - January 24, 2019

+See All Answers (2) Answer This Question


If I use this for a blow through carb with turbos what is the max fuel pressure rise. Example. If im running 5 psi of initial fuel pressure at zero boost will it handle a 20 psi fuel rise with 20 psi boost?

Asked by SHAWN on March 11, 2019


We would suggest that you speak with one of our techs directly. There is more information that we would like to know to be able to answer your questions.

Holley Holley Answer - March 12, 2019

Answer This Question


Does the regulator use ported vacuum source or full vacuum? Thanks in advance

Asked by RON on March 01, 2019


It would use a ported vacuum source if used as a boost reference signal.

Holley Holley Answer - March 06, 2019

Answer This Question


Can i use this regulator for boost from a procharger with a blow thru carb

Asked by NATHAN on May 14, 2018


Yes, it has a boost reference port.

Holley Holley Answer - May 14, 2018

Answer This Question

+See All Questions (5)

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

Back To Results
Email this page
Sign Up for Email X