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Ships within 48 hours · Estimated delivery Jul 11 - Jul 16
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Description
Holley Fuel Pressure Regulator 4.5 - 9 PSI # HO12-803Holley Fuel Pressure Regulator 4. 5 9 PSI # HO12 803 Fuel Pressure Regulator, Chrome Plated, 4 1 2 9 psi, Universal, Each Pressure Range (psi): 4. 5 9 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
Holley Fuel Pressure Regulator 4.5 - 9 PSI # HO12-803Fuel Pressure Regulator, Chrome Plated, 4 1/2-9 psi, Universal, Each
Pressure Range (psi):4.5-9
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
Regulator Material:Aluminum
Regulator Finish:Chrome plated
Quantity:Sold individually.
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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- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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Product Reviews
★★★★★ 5
stocking stuffer
Size: Regular, Color: Cream
I bought these for my girlfriend stocking stuffers. They work well and are reusable.
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Reviewed in the United States on February 25, 2026
★★★★★ 3
So So Socks
Size: Regular, Color: Cream
These are very comfortable socks. I machine washed them on a gentle cool water cycle and they ravelled. That is disappointing quality.
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Reviewed in the United States on April 29, 2026
★★★★★ 5
Wonderful for dry feet
Material Type: Black - 3 Pairs, Size: X-Large
I have been dealing with dry skin and problems with the heel of my foot, so I thought I would give these a try. I am so glad I did. They moisturize beautifully. A must is you are having trouble with your feet.
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Heel Fisures
Material Type: Black - 3 Pairs, Size: X-Large
Fantastic product. Worked well beyond my expectations.
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Reviewed in the United States on May 20, 2026
★★★★★ 4
X-Large is about a size 12-13 shoe size foot USA.
Material Type: Black - 3 Pairs, Size: X-Large
I love them they work fantastic. I am a big guy with swollen feet. Wear size 12 to 13 USA Shoes. They fit me just fine not tight. My feet felt good after wearing them for two days. Some dry skin pulled off with them and it says to wash by hand. I dont know about the durability but I am hoping to get about 5 uses per pair. Before they become unusable.
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Reviewed in the United States on February 7, 2026