FUELAB® 525 Series Fuel Pressure Regulators are designed with performance and flexibility in mind. They accept port style and non-port style union fittings without interference. Several configurations are available, supporting carbureted applications as low as 1 PSID to fuel injected applications up to 125 PSID. The 525 Series has its return port in-line with the inlet port (not on the bottom) which allows for easy installation in extremely tight locations.

Sales Sheet


525 Series In-Line Fuel Pressu Fuel Pressure Regulators

Name52501 Fuel Pressure Regulator

DescriptionStandard Seat / EFI (25-90 PSID)

Show Details52501 Fuel Pressure Regulator

Item-detailsFUELAB® 525 Series Fuel Pressure Regulators are designed with performance and flexibility in mind. They accept port style and non-port style union fittings without interference. Several configurations are available, supporting carbureted applications as low as 1 PSID to fuel injected applications up to 125 PSID. The 525 Series has its return port in-line with the inlet port (not on the bottom) which allows for easy installation in extremely tight locations.

Regulator Features

  • Easy insallation in extremely tight locations
  • -6AN inlet and -6AN return port in-line
  • 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

52501-C Standard Seat / EFI (25-90 PSID)

Product Instructions

Name52502 Fuel Pressure Regulator

DescriptionLarge Seat / Carbureted (4-12 PSID)

Show Details52502 Fuel Pressure Regulator

Item-detailsFUELAB® 525 Series Fuel Pressure Regulators are designed with performance and flexibility in mind. They accept port style and non-port style union fittings without interference. Several configurations are available, supporting carbureted applications as low as 1 PSID to fuel injected applications up to 125 PSID. The 525 Series has its return port in-line with the inlet port (not on the bottom) which allows for easy installation in extremely tight locations.

Regulator Features

  • Easy insallation in extremely tight locations
  • -6AN inlet and -6AN return port in-line
  • 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

52502-C Large Seat / Carbureted (4-12 PSID)

Product Instructions

Name52503 Fuel Pressure Regulator

DescriptionSelect Seat Size / Select Pressure Range

Show Details52503 Fuel Pressure Regulator

Item-detailsFUELAB® 525 Series Fuel Pressure Regulators are designed with performance and flexibility in mind. They accept port style and non-port style union fittings without interference. Several configurations are available, supporting carbureted applications as low as 1 PSID to fuel injected applications up to 125 PSID. The 525 Series has its return port in-line with the inlet port (not on the bottom) which allows for easy installation in extremely tight locations.

Regulator Features

  • Easy insallation in extremely tight locations
  • -6AN inlet and -6AN return port in-line
  • 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

52503-C Select Seat Size / Select Pressure Range

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