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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 13 - Jul 18
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Description
Holley 1-4 Psi Carburetor Fuel Pressure Regulator # HO12-804Holley 1 4 Psi Carburetor Fuel Pressure Regulator # HO12 804 Fuel Pressure Regulator, Chrome Plated, 1 4 psi, Universal, Each Regulator Pressure (psi): 1 4 Regulator Style: Non return Regulator Location: Inline Boost Vacuum Reference Port: No Gauge Port: No Inlet Quantity: 1 Regulator Inlet Size: 3 8 in. NPT Inlet Attachment: Female threads Outlet Quantity: 2 Regulator Outlet Size: 3 8 in. NPT Outlet Attachment: Female threads Return Fitting Size: 3 8
Holley 1-4 Psi Carburetor Fuel Pressure Regulator # HO12-804Fuel Pressure Regulator, Chrome Plated, 1-4 psi, Universal, Each
Regulator Pressure (psi):
1-4
Regulator Style:
Non-return
Regulator Location:
Inline
Boost/Vacuum Reference Port:
No
Gauge Port:
No
Inlet Quantity:
1
Regulator Inlet Size:
3/8 in. NPT
Inlet Attachment:
Female threads
Outlet Quantity:
2
Regulator Outlet Size:
3/8 in. NPT
Outlet Attachment:
Female threads
Return Fitting Size:
3/8 in. NPT
Fittings Included:
No
Regulator Material:
Aluminum
Regulator Finish:
Chrome plated
Rebuildable:
Yes
Mounting Bracket Included:
Yes
Quantity:
Sold individually.
Notes:
Maximum inlet pressure is 7 psi.
Holley Fuel Pressure Regulators
Holley fuel pressure regulators are designed to provide the correct fuel pressure for any high performance vehicle. They're available in a variety of configurations and pressure ranges for both universal and vehicle-specific applications.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
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Product Reviews
★★★★★ 5
Car part
Exact fit
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Reviewed in the United States on January 19, 2026
★★★★★ 5
Perfect Fit for Full Cooling System Overhaul on BMW 330xi
I ordered this Engine Coolant Hose (part #11537545890) for my 2006 BMW 330xi as part of a comprehensive cooling system overhaul. Along with this hose, I had my mechanic replace the thermostat, water pump, radiator, expansion tank, and all other related hoses.
This hose fit exactly as expected—no issues during installation. It’s been three weeks since the job was completed, and everything is performing flawlessly. No leaks, no warning lights, and the engine temperature remains stable under all driving conditions.
Although this is not a genuine OEM part, the quality appears solid and it matched up perfectly with the original in terms of length, shape, and connector alignment. For anyone looking to refresh their aging BMW’s cooling system, this hose is a reliable and cost-effective option. Just be sure to verify the part number for compatibility before purchasing.
Highly recommended if you’re doing preventive maintenance or replacing a failed hose as part of a larger cooling system repair.
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Reviewed in the United States on August 3, 2025
★★★★★ 5
Highly recommend
Perfect fit for my Mercedes C300 V6
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Reviewed in the United States on March 1, 2026
★★★★★ 5
good quality
easy to install, works great , good value
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Reviewed in the United States on December 29, 2025
★★★★★ 5
Great price Great product
Great price Great product
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Reviewed in the United States on February 27, 2026