fuel-pressure-regulators

Holley 12-842 - Fuel Pressure Regulator

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$120.95

$128.95

You save: $8.00 (6%) off MSRP

Unavailable

This product is currently unavailable.

This is a universal fit product

  1. That means this product doesn’t have fitment for any specific vehicle.
  2. If fitment is applicable for your application, be sure to check compatibility with the other components.
Authorized Dealer
white carb warning, not legal street use in California Not for sale or street use in California.

About this product

Part #: 12-842

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.

More Details

ColorBlack Anodized
Fuel System TypeCarbureted
Fuel TypeGasoline / Diesel / E85
Inlet Size0.375 in. NPT
MaterialAluminum
Outlet Size0.375 in. NPT
Pressure4.5-9 PSI
Return Size0.375 in. NPT
StyleBypass
WARNING CA Proposition 65Yes
WARNING CA Proposition 65 MessageWARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Additional Documents
  1. Installation Instructionspdf
  2. Warrantypdf

See what our community says about holley products

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What made you choose this particular product?
I needed a boost referenced regulator for my blower. I was already purchasing a few other fuel components from Holley and decided to add this to the order.
Is this your first time buying from this brand? Did you consider other brands?
No, love Holley products
Was it easy to install? Any installation tips that will help others?
Concept is easy, but implementation can be tricky.
View on David's build
Jackson  Essex

102

Jackson Essex
1978 Ford F-250
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Performance
Is this your first time buying from this brand? Did you consider other brands?
Yes, not really ive seen people get good results out of a holley before.
Was it easy to install? Any installation tips that will help others?
Yes it was, if you get stuck there are many videos on how to instal and tune these things.
Once you've had a chance to use the product, did it meet your expectations?
Exspensive but worth it.
View on Jackson 's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Awesome carb, worth 19 at the wheel, increased throttle response over the 4412-ct
View on Owen's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
I am running a 200cc and can't afford a v8 but still want to be one of the cool kids
What were you trying to accomplish by adding this product?
more horsepower
Was it easy install? Any installation tips that will help others?
Not an easy install since you need an adapter that I ended up milling
Any additional comments?
don't do it and buy a 289
View on Bry's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
I had a Holley carb on the truck and wanted to stick with the brand since it was still working great. I just wanted to have the peace of mind that comes with EFI.
What were you trying to accomplish by adding this product?
Better MPG and Horsepower.
Was it easy install? Any installation tips that will help others?
It was easy to install. I took the truck to an exhaust shop to weld in the O2 bung but did everything else myself. The wiring and fuel return line were a lot easier than I was expecting.
Once you’ve had a chance to use the product, did it meet your expectations?
It exceeded my expectations.
Any additional comments?
I highly recommend this product to anyone wanting to keep a traditional look but have the benefits of EFI.
View on Jonny's build
California prop 65 warningWARNING: Cancer and Reproductive Harm www.p65warnings.cs.gov

*Some manufacturer restrictions apply.

About Holley

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!

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