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Holley Carbureted Fuel Pressure Regulator


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Holley 12-887
SAVE $5.29
More than 10 available
Carbureted By Pass Style Fuel Pressure Regulator
  • For Use With Gasoline
  • Port Sizes: (1) 3/8" NPT Inlet/(1) 3/8" NPT Outlet/(1) 3/8" NPT Return
  • Gauge Port: 1/8" NPT
  • Cast Aluminum
  • Mounting Bracket Included
  • Black E-Coat Finish
  • Ships

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    12-887 is rated 1.7 out of 5 by 3.
    Rated 1 out of 5 by from Did not work out of box Bought a week ago did not work spent 2 hours trying to get it to work.had no flow through regulator.
    Date published: 2018-01-26
    Rated 1 out of 5 by from Looks quality Diaphragm blew after 2 hours of use. Do yourself a favor and order a different one.
    Date published: 2017-09-20
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    I got this regulator with some other grab bag parts, can the return be plug off and simply run this regulator on the pressure side of fuel line between pump and carb?

    Asked by: Samulation
    Yes, you can run this without a return line.
    Answered by: Rusty B
    Date published: 2018-08-08

    What’s the max or operating inlet pressure? I’m needing a higher psi pump and sticking with carb and trying to run 6-8lbs of boost. Basically Che king to see if I can run this w a walboro 255,340 or similar. 

    Asked by: 007texasboy
    These regulators will normally have a range of 3psi-12psi with a maximum inlet pressure of 15 psi. This will not work with Walbro EFI pumps.
    Answered by: Rusty B
    Date published: 2018-06-08

    Does this regulator come in a big port

    Asked by: Kurt79
    This regulator jas 3/8" NPT ports, there are larger sizes in different styles of regulators.
    Answered by: Rusty B
    Date published: 2018-05-23

    What's the pressure range on this item?

    Asked by: Daniel302
    This regulates 5-9 psi.
    Answered by: Jon Jegs Tech
    Date published: 2018-08-08

    Will this work for Tbi to carb conversion

    Asked by: Mitchial
    Yes, the return line will route back the extra pressure from the in tank tbi pump.
    Answered by: Dean R
    Date published: 2018-03-12

    Will this fit on the Jegs 555-15281 mount bracket? Thanks, Bill

    Asked by: Bill440
    There is no fitment guarantee for that regulator
    Answered by: SteveM
    Date published: 2018-03-31
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