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Aeromotive 13301

Aeromotive Universal Bypass Regulator


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Aeromotive Universal Bypass Regulator $160.55
Out of stock
Universal Bypass Regulator
  • 3/8 NPT Ports
  • 1:1 Reference Ratio
  • Supports Pumps Between 100 and 250 GPH Pumps
  • Aeromotive 13301 Details

    Universal Bypass Regulator

    Note: Requires a return line to be installed from the bottom of the regulator to the top of the tank.


    Sold individually
    Inlet Attachment
    Female Threads
    Fittings Included
    Mounting Bracket Included
    Gauge Port
    Inlet Quantity
    Regulator Style
    Boost/Vacuum Reference Port
    Regulator Location
    Regulator Finish
    Red anodized
    Outlet Attachment
    Female Threads
    Pressure Range (psi)
    Outlet Quantity
    Regulator Material
    Return Attachment
    Female Threads
    Boost/Vacuum Rise Ratio
    Pressure Range
    Port Quantity
    Inlet Port Diameter
    Outlet Port Diameter
    Outlet Size (in.)
    3/8 NPT
    Inlet Size (in.)
    3/8 NPT
    Return Fitting Size (in.)
    3/8 NPT
    Manufacturer's Part Number:
    Shipping Weight:
    Package Height:
    Package Depth:
    Package Width:

    CNC-machined from billet aluminum, this bypass fuel pressure regulator has a compact design for carbureted fuel systems with or without nitrous oxide, turbos, and superchargers. The regulator's base pressure is adjustable from 3 to 20 psi, but the included and optional high-pressure spring can increase the range from 20 to 60 psi. When referencing boost, fuel pressure will rise on a 1:1 ratio. E85 compatible.

    Platinum Series

    The Aeromotive Platinum Series is a fully polished, show quality line of fuel system components prepared for the discriminating street rod and show car builder.

    Universal Bypass Regulator Fitting Kits
    Offered in sizes based on your application, each kit includes port plugs and inlet, outlet, and return fittings.

    13301 is rated 4.0 out of 5 by 4.
    Rated 5 out of 5 by from works perfectly. im using a Holly EFI sniper Fuel Pump in tank with a carb. this regulator allows fuel pressure control down to 3psi with the proper return line setup. 3/8 supply line and 1/2 return line in my case. im running steady at 8psi with plenty of adjustment to raise or lower pressure.
    Date published: 2018-12-26
    Rated 4 out of 5 by from Works as it should Had a Fitech Mean Street setup that I was not happy with. Went back to a carburetor but kept the in tank fuel pump. I needed this regulator to lower my fuel pressure from 59 psi to about 6 or 7 psi. Installation was easy and straightforward, wish the mounting bracket was different but with a little work on my end all is good.
    Date published: 2018-10-02
    Rated 2 out of 5 by from Couldn't get pressure under control I bought this under the advice of the Jegs tech support to use in my 1987 toyota 4runner and with my factory return line couldn't get the pressure under 25psi regardless of which spring I had installed. I upped the size of the return line from 1/4" to 3/8" then couldn't get the pressure above 3psi. This was all with the factory toyota fuel pump installed trying to get it to 9 PSI for the carburetor. It's a great product it just has limitations
    Date published: 2014-12-25
    • y_2019, m_2, d_21, h_1
    • bvseo_bulk, prod_bvrr, vn_bulk_2.0.11
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    • clientName_jegs

    Does this by-pass regulator work just fine on my new ZZ6 chevy crate engine with what they advertise is a high performance fuel pump that delivers 80 GPM. This by-pass part NO.13301 is advertised as supporting 100 to 250.

    Asked by: HOTROD1
    This should work for your application. The stock pump will not be far outside that range of GPM.
    Answered by: Rusty B
    Date published: 2017-10-23
    • y_2019, m_2, d_21, h_1CST
    • bvseo_bulk, prod_bvqa, vn_bulk_2.0.11
    • cp_1, bvpage1
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    • loc_en_US, sid_10001_10001_60246, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs

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