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Holley Fuel Pressure Regulators 12-804

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

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Brand: Holley
Manufacturer's Part Number: 12-804
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.

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Most Helpful Reviews Review this Product

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

Average Customer Review

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(9)

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Holley low pressure regulator

Summit RacingSummit Racing Verified Purchase

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

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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

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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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