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Holley 12-840KIT Billet Bypass Fuel Pressure Regulator Kit

Manufacturer

Picture for manufacturer Holley

Part Number

12-840KIT
7 reviews
Sale Price

$349.95

In Stock (5)

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Usually delivered within 2 days

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Product Details

The Holley Billet Bypass Fuel Pressure Regulator Kit is a complete solution for precision fuel pressure control in carbureted applications. This professionally engineered kit combines Holley's high-quality billet aluminum regulator with all necessary fittings and gauges for immediate installation.

Complete Kit Includes:

  • Billet aluminum bypass-style fuel pressure regulator with mounting bracket
  • Three Mr. Gasket 3/8" NPT to -6 AN fittings (481666-BL) for inlet, outlet, and return lines
  • Earl's fuel pressure gauge (100187ERL) with 1/8" NPT gauge port
  • All necessary hardware for installation

Key Features:

  • Adjustable pressure range from 4.5 to 9 PSI for precise fuel delivery tuning
  • 3/8" NPT inlet and outlet ports for compatibility with standard fuel line fittings
  • Bypass design returns excess fuel to the tank, maintaining consistent pressure
  • CNC-machined billet aluminum construction for durability and heat dissipation
  • Integrated 1/8" NPT gauge port with included pressure gauge for real-time monitoring
  • Mounting bracket included for secure installation

This regulator kit is ideal for street performance and racing applications using carburetors that require low to moderate fuel pressure. The bypass design ensures consistent fuel pressure even with varying fuel pump output, making it perfect for upgrading from mechanical to electric fuel pumps or fine-tuning carburetor performance.

Products specifications

Adjustable

Yes

Brand

Holley

Category

Air and Fuel Delivery

Color

Black

Emission Code

5

Fuel System

Carbureted

Fuel Type

Gasoline

Gauge Port

Yes

Grade Type

Performance

Inlet Quantity

1

Inlet Size

3/8 inch NPT

Inlet Type

NPT

Material

Aluminium

Maximum Pressure Reading

15

Mounting Hardware Included

Yes

Mounting Type

inline

Outlet Quantity

2

Outlet Size

3/8 inch NPT

Outlet Type

NPT

Part Type

Fuel Pressure Regulator

Port Quantity

3

Pressure Range

15-60 PSI

Product Type

Fuel Pressure Regulator

Style

Non-Return

Sub Category

Carburetion

Warning

California Proposition 65

Warranty

Manufacturer's Limited 90 Day Warranty

so far so good

Found what I was looking for with ease

Easy to use website. Reasonable prices for materials and shipping.

Still waiting on the carbon fiber goods (thanks COVID) but the fuel components got here flawlessly and so fast!

It was super easy to place the order. It shipped fast and arrived in time for Christmas my fiance was very happy with his gift

Fast shipping and easy to use website.

My order questions were answered very well! Thanks!

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