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AEM Electronics

AEM High Cap Universal Adjustable Fuel Pressure Regulator

AEM High Cap Universal Adjustable Fuel Pressure Regulator

Regular price $153.95 USD
Regular price $172.00 USD Sale price $153.95 USD
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AEM's High Cap Universal Adjustable Fuel Pressure Regulator (PN 25-305BK) is the perfect solution for racers who need reliable fuel pressure in high-boost vehicles and racecars that require a large volume of fuel delivery. A longer spring provides for a wider range of adjustment (from 40 to 130 PSI). An easy-to-adjust set screw stands up to repeated adjustments. A single large return orifice is designed to handle high rate flow pumps. The regulator has a 1:1 rising pressure rate for boosted applications, and it is alcohol fuel and race fuel compatible. The High Cap Universal FPR is tapped to accept a 9/16”-18 O-Ring sealed fittings for inlet and return, and includes a 1/8 NPT port for a fuel pressure gauge or pressure sensor pick up. Features:

  • Universal fuel pressure regulator adapts to virtually any vehicle
  • Longer spring for wider range of adjustment (40 – 130 PSI)
  • Single large return orifice accommodates very high flow rate pumps
  • Boost dependent rising fuel pressure rate (1:1)
  • Three 9/16"-18 ORB O-ring style inlet ports (2 inlet, 1 return)
  • Easy to use adjustment screw
  • Integrated 1/8" NPT gauge port
  • 5mm (3/16") vacuum hose
  • Alcohol fuel and race gas compatible
  • CNC-machined from 6061-T6 billet aluminum
  • Patent # 6,298,828

Shipping & Returns

US Shipping to the 48 contiguous states only

We have a 30-day return policy on MOST items unless otherwise noted, which means you have 30 days after receiving your item to request a return.

(No Return on Tires or Customized Products)

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase. A 30% restocking fee will be charged on returns due to customer order error. 

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