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Bypass Fuel Pressure Regulator – PN 1051

RobbMc Bypass Regulator


  • For use with electric fuel pumps only
  • Requires a return line from the regulator back to the fuel tank/cell
  • Bypass design eliminates pressure creep and vapor lock
  • Decreases pump noise and increases pump efficiency compared to dead-head style regulator
  • Large (.375" diameter) internal orifice reduces flow restriction
  • 50% less pressure drop at full throttle than other popular regulators of similar size
  • Anodized housing and stainless steel plunger for corrosion resistance
  • Special diaphragm allows use of gasoline and/or alcohol
  • Boost/vacuum reference for supercharged/turbo applications
  • Adjusts from 3 to 10 psi
  • Small in size yet works with pumps up to 300 gph
  • Optional mounting bracket attaches to regulator in eight possible positions
  • One 3/8 NPT inlet port, two 3/8 NPT outlet ports, one 1/2 NPT return port plus one 1/8 NPT gauge port
  • Easily convert from bypass to dead-head with optional conversion kit (PN 1053)

PN 1048   1/2 NPT to –8AN Fitting

For use when connecting –8AN return line to regulator.


PN 1049   Optional Mounting Bracket

In many cases a bracket is not required as the regulator can be suspended in the lines. However, when a bracket is desired, this one offers a multitude of mounting options because it can be attached to the regulator in eight different positions!


PN 1053   Bypass to Dead–Head Conversion Kit

Converts RobbMc Bypass Regulator (PN 1051) to a dead–head (non-return) style regulator.


PN 1095    Regulator Rebuild Kit

Includes diaphragm, sealing washer and o–ring.


Another first from RobbMc Performance! And, as always, Made in the USA!

Regulator Installation Instructions
Regulator Bracket Instructions

Note: Microsoft Word is required to view/print these documents.

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