Free shipping on ALL orders!* - Details
Holley Die Cast Bypass Fuel Pressure RegulatorsYouTube Button
How To Choose A Regulator for Carbureted VehiclesYouTube Button

Die Cast By Pass Style Carbureted Fuel Pressure Regulators

Chrome Die Cast Fuel Regulator, 6 PSI

PART# 12-881

Be the first to write a review
$61.80   Suggested Retail
$55.62   Holleydays Price
Estimated shipping date: 01/15/2021
Email Me When Available
Free Shipping
Add to Wish List


Holley does it again with their new die cast aluminum by pass style fuel pressure regulators. The same Holley quality that you expect at a price point that every budget can handle. 1/8" NPT barb fitting for boost reference port included.


  • Die Cast aluminum construction
  • 3/8” NPT Inlet, Outlet, and Return ports
  • 1/8” NPT Gauge Port
  • 1/8" NPT Boost Reference – 1:1


Emission Code5
Fuel SystemCarbureted
Fuel TypeDiesel
Inlet Size3/8 inch NPT
Outlet Size3/8 inch NPT
Pressure Range4.5-9 PSI
Product TypeFuel Pressure Regulator
Return Size3/8 inch NPT
WarrantyLimited 90 Day
Part Number12-881



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Tech Resources

Regulator is compatible with Diesel #1 and Diesel #2.

Warranty Information

Limited 90 Day: See Details
We Suggest
    Also Bought

        *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

        Some parts are not legal for use in California or other states with similar regulations.

         X  Holleydays 2020 20% off and DD
         X  Holleydays 2020 20% off and DD