fuel-pressure-regulators

Holley 12-842 - Fuel Pressure Regulator

Name: Holley 12-842 - Fuel Pressure Regulator (12-842)
Brand: Holley
SKU: 5ca77d1de6755f27fef4b3db
Price: 120.95 USD
Availability: InStock

$120.95

$128.95

You save: $8.00 (6%) off MSRP

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This is a universal fit product

That means this product doesn’t have fitment for any specific vehicle.
If fitment is applicable for your application, be sure to check compatibility with the other components.

Authorized Dealer

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

Color	Black Anodized
Fuel System Type	Carbureted
Fuel Type	Gasoline / Diesel / E85
Inlet Size	0.375 in. NPT
Material	Aluminum
Outlet Size	0.375 in. NPT
Pressure	4.5-9 PSI
Return Size	0.375 in. NPT
Style	Bypass
WARNING CA Proposition 65	Yes
WARNING CA Proposition 65 Message	WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Additional Documents

See what our community says about holley products

887

David Voth

1974 Chevrolet Luv

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

102

Jackson Essex

1978 Ford F-250

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

494

Owen Smith

2018 Creech Motorsports Fabrication LMSC Fusion

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

1.9k

Bry Nguyen

1966 Ford Mustang

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

1.4k

Jonny Mill

1935 Ford Pickup

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

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WARNING: 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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