Hero image 0 of Holley 12-879 Adjustable Billet By-Pass Regulator Kit 3/8 in. NPT, 0 of 7

Holley 12-879 Adjustable Billet By-Pass Regulator Kit 3/8 in. NPT

Name: Holley 12-879 Adjustable Billet By-Pass Regulator Kit 3/8 in. NPT
Brand: Holley
SKU: 1131630314
Price: 255.95 USD
Availability: InStock

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Key item features

Adjustable from 4-65 psi for precise fuel pressure adjustments - 4-15 psi spring installed, optional spring for up to 65 psi included for EFI applications
Constructed of billet aluminum with a black anodized base and a clear anodized top for good looks
Used in systems with a return line back to the tank
(1) 3/8 in. NPT Inlet; (1) 3/8 in. NPT Outlet; and (1) 3/8 in. NPT Return Port
Includes fitting for manifold boost reference which it compensates for at a 1:1 ratio
Has 3/8 in. NPT gauge port - Includes 0-100 psi liquid filled fuel pressure gauge
Compatible with diesel fuel and E85

Specs

Vehicle fitment type
Specific
Brand
Holley
Automotive specialty part type
Fuel Pressure Regulator
Features
Adjustable
Material
Aluminum
Finish
Anodized

Current price is $255.95

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About this item

Product details

Adjustable billet by-pass return style fuel pressure regulator 3/8 NPT Kit with Fuel Pressure Gauge and Adapter Fittings Boost Reference - 1:1;

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. These regulators are adjustable from 4-65 psi and will handle both carbureted and EFI applications. A second pressure spring is included allowing you to increase the fuel pressure range up to 65 psi for EFI systems. They have 3/8 NPT port sizes to adapt to your new or existing fuel lines. So, if you are currently running a carbureted system but plan to upgrade to EFI in the future, these regulators will have you covered either way.

This kit includes a 0-100 liquid filled fuel pressure gauge, mounting bracket, and -6 AN to 3/8 in NPT adapter fitting to get you started on your installation.;

Adjustable from 4-65 psi for precise fuel pressure adjustments - 4-15 psi spring installed, optional spring for up to 65 psi included for EFI applications
Constructed of billet aluminum with a black anodized base and a clear anodized top for good looks
Used in systems with a return line back to the tank
(1) 3/8 in. NPT Inlet; (1) 3/8 in. NPT Outlet; and (1) 3/8 in. NPT Return Port
Includes fitting for manifold boost reference which it compensates for at a 1:1 ratio
Has 3/8 in. NPT gauge port - Includes 0-100 psi liquid filled fuel pressure gauge
Compatible with diesel fuel and E85

info:

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Specifications

Vehicle model

Holley Billet Bypass Regulator, 4-65 Psi (3/8 Npt)

Vehicle fitment type

Specific

Brand

Holley

Automotive specialty part type

Fuel Pressure Regulator

Warranty

Warranty information

Limited 90 Day

Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.

Warnings

Warning Text

California Proposition 65

WARNING: Cancer and Reproductive Harm - www.P65Warnings.com

Compare with similar items

Comparison Overview:
Product	Viewing this item Holley 12-879 Adjustable Billet By-Pass Regulator Kit 3/8 in. NPT current price $255.95 Holley 12-879 Adjustable Billet By-Pass Regulator Kit 3/8 in. NPT	Holley 26-511 Fuel Cell Return Fitting Kit - 10AN current price $30.43 Holley 26-511 Fuel Cell Return Fitting Kit - 10AN	Holley Performance 534-218 Fuel Injector Rail current price $238.95 Holley Performance 534-218 Fuel Injector Rail	Holley 12-841 HP Billet Fuel Press Regulator, Gauge/Black Fitting current price $225.99 Holley 12-841 HP Billet Fuel Press Regulator, Gauge/Black Fitting	Holley Performance 134-301SA Carburetor Main Body current price $263.95 Holley Performance 134-301SA Carburetor Main Body 5 out of 5 Stars. 1 reviews	Holley Performance 720-1 Air Cleaner Assembly current price $221.95 Holley Performance 720-1 Air Cleaner Assembly 1 out of 5 Stars. 1 reviews	Holley 16-125 3" X 8" HydraMat®, Rectangle Offset Outlet current price $204.95 Holley 16-125 3" X 8" HydraMat®, Rectangle Offset Outlet	Holley Performance 703-28 Carburetor and Installation Kit current price $76.55 Holley Performance 703-28 Carburetor and Installation Kit 4.5 out of 5 Stars. 2 reviews	2BBL Carburetor 350 CFM Manual 0-7448 For Holley 2300 current price Now $202.99, Was $222.99 2BBL Carburetor 350 CFM Manual 0-7448 For Holley 2300	Holley 16-108 8" X 3" Hydramat, Rectangle current price $231.95 Holley 16-108 8" X 3" Hydramat, Rectangle

Comparison Chart:
Vehicle fitment type	SpecificHolley 12-879 Adjustable Billet By-Pass Regulator Kit 3/8 in. NPT	SpecificHolley 26-511 Fuel Cell Return Fitting Kit - 10AN	SpecificHolley Performance 534-218 Fuel Injector Rail	UniversalHolley 12-841 HP Billet Fuel Press Regulator, Gauge/Black Fitting	SpecificHolley Performance 134-301SA Carburetor Main Body	SpecificHolley Performance 720-1 Air Cleaner Assembly	SpecificHolley 16-125 3" X 8" HydraMat®, Rectangle Offset Outlet	SpecificHolley Performance 703-28 Carburetor and Installation Kit	Specific2BBL Carburetor 350 CFM Manual 0-7448 For Holley 2300	SpecificHolley 16-108 8" X 3" Hydramat, Rectangle
Automotive specialty part type	Fuel Pressure RegulatorHolley 12-879 Adjustable Billet By-Pass Regulator Kit 3/8 in. NPT	-Holley 26-511 Fuel Cell Return Fitting Kit - 10AN	EFI Fuel Rail KitHolley Performance 534-218 Fuel Injector Rail	Fuel Pressure RegulatorsHolley 12-841 HP Billet Fuel Press Regulator, Gauge/Black Fitting	Carburetor Main BodyHolley Performance 134-301SA Carburetor Main Body	Flame ArrestorHolley Performance 720-1 Air Cleaner Assembly	Fuel Tank PickupHolley 16-125 3" X 8" HydraMat®, Rectangle Offset Outlet	Carburetor Repair KitHolley Performance 703-28 Carburetor and Installation Kit	Carburetor2BBL Carburetor 350 CFM Manual 0-7448 For Holley 2300	HydramatHolley 16-108 8" X 3" Hydramat, Rectangle
Features	AdjustableHolley 12-879 Adjustable Billet By-Pass Regulator Kit 3/8 in. NPT	-Holley 26-511 Fuel Cell Return Fitting Kit - 10AN	AdjustableHolley Performance 534-218 Fuel Injector Rail	AdjustableHolley 12-841 HP Billet Fuel Press Regulator, Gauge/Black Fitting	Easy InstallationHolley Performance 134-301SA Carburetor Main Body	-Holley Performance 720-1 Air Cleaner Assembly	-Holley 16-125 3" X 8" HydraMat®, Rectangle Offset Outlet	-Holley Performance 703-28 Carburetor and Installation Kit	Lightweight2BBL Carburetor 350 CFM Manual 0-7448 For Holley 2300	AdjustableHolley 16-108 8" X 3" Hydramat, Rectangle
Material	AluminumHolley 12-879 Adjustable Billet By-Pass Regulator Kit 3/8 in. NPT	AluminiumHolley 26-511 Fuel Cell Return Fitting Kit - 10AN	aluminumHolley Performance 534-218 Fuel Injector Rail	Billet aluminumHolley 12-841 HP Billet Fuel Press Regulator, Gauge/Black Fitting	AluminumHolley Performance 134-301SA Carburetor Main Body	Stainless SteelHolley Performance 720-1 Air Cleaner Assembly	-Holley 16-125 3" X 8" HydraMat®, Rectangle Offset Outlet	MultiHolley Performance 703-28 Carburetor and Installation Kit	Aluminum2BBL Carburetor 350 CFM Manual 0-7448 For Holley 2300	-Holley 16-108 8" X 3" Hydramat, Rectangle