Fuelab 535 Series Mini Dual Inlet Fuel Pressure Regulator - 6AN In/Out (53501)

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535 Series Mini Dual Inlet Fuel Pressure Regulators by Fuelab

Your engine is thirsty and needs to drink. All the engine upgrades in the world won’t matter if a steady stream of fuel isn’t available.

A pressure regulator addresses your engine’s fuel needs, ensuring each cylinder gets enough go-juice, and Fuelab makes some of the best on the market. The Fuelab 535 Series of mini dual inlet regulators offers upgrades over its 515 series with a smaller size and weight. Made from military-grade billet aluminum, it can handle gasoline, diesel, methanol and ethanol fuels. It comes in several different configurations to handle up to 125 PSID, and features a fine-thread pitch for precise pressure adjustment.

It can handle port and non-port style union fittings without any interference, and comes equipped with two -6AN inlets and one -6AN return port. It even comes in a selection of six colors for those who love to show their cars as much as they love to race them. The regulator also includes a two-year limited warranty and all the necessary mounting hardware you’ll need for installation.


  • Two -6AN inlet ports and one -6AN return port
  • Lightweight design weighs only 5.25 oz
  • Gasoline, diesel, methanol, and ethanol fuel compatible
  • Billet Aluminum with anodize per military MIL-A-8625, Type II
  • Fine thread pitch for precise pressure adjustment
  • Versatile mounting bracket and stainless steel hardware
  • 1/8” NPT gauge port with plug for external pressure gauge
  • 1/8” NPT pressure reference port with barbed fitting
  • Backed by a 2-year limited warranty


  • Universal

What's In The Box?

  • 1 - 535 Series Mini FPR
  • Necessary Mounting Hardware
  • Instructions/Manuals (if applicable)
  • Warranty Information



 Fuelab 2-Year Limited Warranty

Customer Reviews

Based on 1 review
Wayne Abrams
Fuelab 53501 mini fuel press regulator

Very well built and included hardware needed. You will have to AN fittings not included . Small size made installation a breeze. Connected directly to fuel rail.