Fuelab Universal EFI Adjustable Fuel Pressure Regulator 25-90 psi (2) -6AN Inlets (1) -6AN Return Black

Fuelab EFI Adjustable Fuel Pressure Regulator 25-90 psi Black | 25-90 PSI Adjustable Range | EFI Fuel Pressure Regulator

Overview

The Fuelab EFI Adjustable Fuel Pressure Regulator is a precision-engineered component designed to provide reliable and accurate fuel pressure control for electronic fuel injection (EFI) systems. Suitable for a wide range of applications, this universal regulator supports gasoline, diesel, methanol, and ethanol fuels, making it an ideal choice for Subaru enthusiasts looking to optimize fuel delivery and maintain consistent pressure under varying engine demands. Its adjustable range of 25 to 90 psi allows for fine-tuning to match specific fuel system requirements and performance goals.

Crafted from billet aluminum and finished with a military-grade anodize coating (MIL-A-8625, Type II), this regulator combines durability with corrosion resistance. The design incorporates two -6AN inlet ports and one -6AN return port, facilitating versatile installation options and compatibility with common fuel line fittings. Fine thread pitch adjustment ensures precise control over fuel pressure, while the inclusion of a 1/8 inch NPT gauge port and pressure reference port adds functionality for monitoring and system integration.

For Subaru owners, maintaining stable fuel pressure is critical to achieving consistent power delivery and engine reliability, especially when upgrading to higher-performance fuel systems or forced induction setups. This regulator’s broad compatibility and robust construction make it a dependable upgrade or replacement part that supports tuning flexibility and long-term durability in demanding driving conditions.

Features & Specifications

This Fuelab EFI Adjustable Fuel Pressure Regulator is engineered for universal EFI applications and features an adjustable pressure range of 25-90 psi. Constructed from billet aluminum with a military-grade anodized finish, it delivers precise fuel pressure control and durability for Subaru enthusiasts seeking reliable fuel system performance and tuning versatility.

• Brand: Fuelab
• Product: EFI Adjustable Fuel Pressure Regulator 25-90 psi Black
• Part Number: 51502-1
• Fitment: Universal
• Material: Billet Aluminum
• Finish: Black Anodized (MIL-A-8625, Type II)
• Construction: CNC Machined Billet
• Origin: Not specified
• Pressure Range: 25-90 psi (PSID)
• Inlet Ports: Two -6AN
• Return Port: One -6AN
• Fuel Compatibility: Gasoline, Diesel, Methanol, Ethanol
• Adjustment: Fine Thread Pitch for Precise Control
• Gauge Port: 1/8 inch NPT with Plug
• Pressure Reference Port: 1/8 inch NPT with Barbed Fitting
• Mounting: Versatile Bracket with Stainless Steel Hardware
• Warranty: Limited Lifetime

Key Benefits

• Performance: Enables precise fuel pressure tuning for optimized EFI system operation and improved engine response.
• Durability: Billet aluminum construction with military-grade anodizing ensures long-lasting corrosion resistance and strength.
• Fitment: Universal design with standard -6AN ports fits a wide range of Subaru fuel systems and aftermarket setups.
• Adjustability: Fine thread pitch adjustment allows for accurate and repeatable pressure settings between 25 and 90 psi.
• Monitoring: Integrated gauge and pressure reference ports facilitate easy installation of external gauges and system diagnostics.
• Compatibility: Supports multiple fuel types including gasoline, diesel, methanol, and ethanol, accommodating diverse Subaru builds.

What's Included

• 1× Fuelab EFI Adjustable Fuel Pressure Regulator 25-90 psi Black
• Versatile mounting bracket
• Stainless steel mounting hardware
• 1/8 inch NPT gauge port plug
• Installation instructions

Installation & Compatibility

Installation of the Fuelab EFI Adjustable Fuel Pressure Regulator is straightforward for those familiar with fuel system components but may require professional assistance for less experienced installers due to fuel system safety considerations. The regulator mounts using the included bracket and hardware, and standard -6AN fittings are compatible with most aftermarket fuel lines. No special tools beyond common hand tools and fuel line wrenches are typically required. This regulator is designed for universal EFI applications, but Subaru owners should verify fitment with their specific fuel system setup and fuel type. Tuning adjustments to fuel pressure should be performed carefully to maintain engine safety and performance.

• Professional Installation: Recommended for safety and proper fuel system integration
• Modifications Required: None; compatible with standard -6AN fuel lines
• Verify Compatibility: Confirm fitment for your specific Subaru model and fuel system configuration

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