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Holley Fuel Pressure Regulators 12-804

Original Price:

$28.95

Sale Price:

$25.86

Fuel Pressure Regulator, Tumble Polished, 1-4 psi, Universal, Each

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

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Brand: Holley

Manufacturer's Part Number: 12-804

Part Type: Fuel Pressure Regulators

Product Line: Holley Fuel Pressure Regulators

Summit Racing Part Number: HLY-12-804

UPC: 090127020234

Pressure Range (psi): 1-4

Regulator Style: Non-return

Regulator Location: Inline

Boost/Vacuum Reference Port: No

Gauge Port: No

Mounting Bracket Included: Yes

Fittings Included: No

Rebuildable: Yes

Inlet Quantity: One

Inlet Attachment: Female threads

Inlet Size: 3/8 in. NPT

Outlet Quantity: Two

Outlet Attachment: Female threads

Outlet Size: 3/8 in. NPT

Return Fitting Size: 3/8 in. NPT

Regulator Material: Aluminum

Regulator Finish: Polished

Quantity: Sold individually.

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

The needle and seat assemblies that are installed in Holley Performance carburetors can sufficiently control fuel pressure up to about 8 psi. If the fuel pump is putting out more than 8 psi, a regulator should be used to keep the fuel pressure within safe limits and avoid the possibility of flooding. Holley manufactures a number of regulators for most any need.

Result 1 of 1

Universal: Yes

Fuel Type: Gasoline

Regulator Usage: Carburetor

  • 1

5 Results Found

Summit Racing SUM-800115 - Summit Racing® Fuel Pressure Gauges

Click here for more information about Summit Racing SUM-800115 - Summit Racing® Fuel Pressure Gauges

Gauge, Fuel Pressure, 0-15 psi, 1 1/2 in., Analog, Mechanical, White Face, Each

Part Number: SUM-800115

Estimated Ship Date: Today

$19.97

Summit Racing SUM-220648 - Summit Racing® AN to NPT Adapter Fittings

Click here for more information about Summit Racing SUM-220648 - Summit Racing® AN to NPT Adapter Fittings

Fitting, Adapter, Straight, Male -6 AN to Male 3/8 in. NPT, Aluminum, Blue Anodized, Each

Part Number: SUM-220648

Estimated Ship Date: Today

$2.97

Russell Performance 660460 - Russell AN to NPT Adapter Fittings

Click here for more information about Russell Performance 660460 - Russell AN to NPT Adapter Fittings

Fitting, Straight, -6 AN Male to 3/8 in. NPT Male, Aluminum, Blue, Each

Part Number: RUS-660460

Estimated Ship Date: Today

$4.97

Aeroquip FBM2005 - Aeroquip AN to NPT Adapter Fittings

Click here for more information about Aeroquip FBM2005 - Aeroquip AN to NPT Adapter Fittings

Fitting, Straight, -6 AN Male to 3/8 in. NPT Male, Aluminum, Blue, Each

Part Number: AER-FBM2005

Estimated Ship Date: Today

$3.97

Earl's Performance 981666ERL - Earl's Performance AN to NPT Adapter Fittings

Click here for more information about Earl's Performance 981666ERL - Earl's Performance AN to NPT Adapter Fittings

Fitting, Straight, -6 AN Male to 3/8 in. NPT Male, Aluminum, Blue Anodized, Each

Part Number: EAR-981666ERL

Estimated Ship Date: Today

$3.97

Most Helpful Reviews Review this Product

18 Customer Reviews for Holley 12-804 - Holley Fuel Pressure Regulators

Average Customer Review

5 Star

(14)

4 Star

(4)

3 Star

(0)

2 Star

(0)

1 Star

(0)
+See All 18 Reviews

Holley Fuel Pressure Regulators 12-804

Summit RacingSummit Racing Verified Purchase

Great product for the price, it fixed my fuel pressure issues easily. Common sizes so easy to get fittings. Just a great product.

0 of 0 found this review helpful.

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Reviewer: WILLIAM from FL

Date: November 05, 2014

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Works Great

Summit RacingSummit Racing Verified Purchase

Easy to install and works great.

0 of 0 found this review helpful.

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Reviewer: ROBERT from VA

Date: November 03, 2014

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Fuel pressure regulator

Summit RacingSummit Racing Verified Purchase

Product looks nice....one problem it had on its arrival no threads on bottom to put bracket to regulator....had to go out and buy a thread tapper before installation which was a downer.....I missed a very important car show for that reason....did want to send it back would have another show...it works as it should!!!!

0 of 0 found this review helpful.

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Reviewer: EDDIE from IL

Date: October 04, 2014

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great product

Summit RacingSummit Racing Verified Purchase

worked perfectly, great product ,will turn down to 1 lbs pressure ,just like I needed it to

0 of 0 found this review helpful.

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Reviewer: RICKY from KY

Date: September 29, 2014

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Holley 12-804 pressure regulator

Summit RacingSummit Racing Verified Purchase

Generally I'm happy but theses are hard to mount in a Corvair engine bay. For this application the 3/8 pipe inlet/outlet require a lot of brass to reduce to something smaller. I also cannot get this down to 3 psi from 8 psi at the inlet. I think the flow rate is too low at idle. I had to cut the circle in the bracket to a slot so I don't have to remove all the brass to remove it. Once installed it looks pretty decent. 2nd car installation; both were a bear with lots of brass and hard steel lines. ...read more

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Reviewer: MICHAEL from CO

Date: September 29, 2014

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Holley low pressure regulator

Summit RacingSummit Racing Verified Purchase

Ideal for specific applications. Good to know this item is stocked.

0 of 0 found this review helpful.

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Reviewer: ERNEST from Australia

Date: August 11, 2014

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Solved my carb flooding issues.

Summit RacingSummit Racing Verified Purchase

Great looking product that was easy to install. Better yet, it solved the flooding issues with my recently re-built Holley 650 double pumper carb. My new mechanical fuel pump was putting out 6.5 PSI, which was enough to blow by the secondary float valves. I'm told these carbs can only handle 3PSI. I set the regulator at 2-1/2PSI, and NO MORE FLOODING ! ...read more

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Reviewer: JOHN from FL

Date: August 07, 2014

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Fuel regulator to go with Holly red pump for SU's

Summit RacingSummit Racing Verified Purchase

Seems to work well. Would be better if it had a port for a pressure gauge but can be added with fittings. Good for SU's that require low pressure 2.5 to 3 lbs max

0 of 0 found this review helpful.

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Reviewer: RICHARD from FL

Date: July 29, 2014

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Good value.

Summit RacingSummit Racing Verified Purchase

Out of the box, it was stuck on max pressure. I took it apart and worked the ball and spring. Then it was adjustable. Seems to be OK now.

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Reviewer: TOM from MI

Date: June 24, 2014

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Holley brand with low pressure

Summit RacingSummit Racing Verified Purchase

Took some work to install but seems to keep pressure low which is what I needed for this project.

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Reviewer: ROBERT from MI

Date: June 10, 2014

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Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

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