Adjustable Fuel Pressure Regulator Kit - Universal Fitment

2 Hours

Part Number:
ASM-FUL-300 = Universal

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

Pricing: $310.00


The PERRIN Adjustable Fuel Pressure Regulator is designed with adjustability and high-flow fuel regulation in mind that works with fuel systems ranging from stock setups to 1000+ horsepower setups.


Of the (6) -6 ports on the Adjustable Fuel Pressure Regulator, (4) of these ports are used to connect to your fuel rails with maximum flow in mind. Rated to 1,000+ horsepower worth of fuel flow, this kit works perfectly with stock engines as well as heavily modified engines thanks to the interchangeable orifices.


The PERRIN Adjustable Fuel Pressure Regulator can be adjusted from 20 psi to maximum fuel pump capacity. This allows for added fuel delivery to your engine without recalibrating your ECU. Included are three interchangeable orifices for stock fuel pumps, larger drop-in pumps, and fuel systems supporting 1,000+ horsepower.

Six Ports for Maximum Flow

There are (6) -6 ports on the Adjustable Fuel Pressure Regulator: (1) for fuel pump feed, (2) for fuel rail feed, (2) for fuel rail return, and (1) for fuel tank return. This allows for easy installation of aftermarket fuel rail kits that utilize more than one rail.

Auxiliary Port

Unlike competitors' fuel pressure regulators, the PERRIN Adjustable Fuel Pressure Regulator has a port located discretely on the bottom of its assembly. This 1/8th NPT threaded port allows for installation of aftermarket fuel pressure sensors and/or gauges.


Internal components protected under Patent # 6,298,828. These components are licensed to PERRIN Performance for the technology related to the Adjustable Fuel Pressure Regulator's features. Using this proven technology ensures internal components will last the duration of your vehicle's life.


The PERRIN Adjustable Fuel Pressure Regulator comes with a black anodized finish to make certain your part continues to look good and resist corrosion during its use. For your convenience the ports are labelled according to their proper connections.

5 Year Warranty

PERRIN Performance warrants to the original purchaser that all PERRIN products will be free from defects in material and workmanship within a sixty (60) month period from the date of purchase. *Some exclusions apply
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Off Road Use Only

This product is legal in California only for racing vehicles which may never be used upon a highway. Check your local and federal laws prior to installation!
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Jeff's Blog

Read up on the the development of the Adjustable Fuel Pressure Regulator.
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Download Instructions

Warranty Details

This product features a 5 year warranty Read Full Warranty

Tech Department


Compatibility Detail


Vehicles with Electronic Fuel Injection (EFI) Yes, see note
2008-2015 Subaru STI No, click here.
*NOTE: Kit does not include AN fittings nor does it come with hoses. Additional hardware much be acquired separately.

In The Box

In The Box

(1) Adjustable Fuel Pressure Regulator assembly
(3) Varying diameter orifices (1) Installed and (2) in subpacket


Note: This Universal Kit requires the purchase of additional fittings.


Port Size -6 with o-ring seal
Pressure Ratio 1:1
Included Orifice Sizes 0.100", 0.150", and 0.200"
Pressure Range 25 psi - maximum pressure fuel pump delivers
Material 6061 billet aluminum
Finish Anodized Black


Shipping Information

  • Item Requires Shipping
  • 7.0 lbs.
  • W7.0000” x H8.0000” x L19.0000”
  • This item ships in its own box.