Fuelab Universal EFI Adjustable Fuel Pressure Regulator 25-90 psi (2) -10AN Inlets (1) -6AN Return Black

Fuelab Adjustable EFI Fuel Pressure Regulator 25-90 psi (2) -10AN Inlets (1) -6AN Return Black | 25-90 PSI Adjustable Range | EFI Fuel Pressure Regulator

Overview

The Fuelab Adjustable EFI Fuel Pressure Regulator is a precision-engineered component designed to provide consistent and adjustable fuel pressure control for a wide range of EFI (Electronic Fuel Injection) applications. With a pressure adjustment range of 25 to 90 psi, this regulator is ideal for enthusiasts and tuners seeking reliable fuel delivery management across gasoline, diesel, methanol, and ethanol fuel systems. Its universal fitment makes it a versatile choice for Subaru owners upgrading or maintaining their fuel systems.

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 fine thread pitch allows for precise pressure tuning, while the dual -10AN inlet ports and single -6AN return port provide flexible plumbing options. The inclusion of a 1/8 inch NPT gauge port and pressure reference port further supports accurate fuel system monitoring and tuning.

For Subaru enthusiasts, maintaining optimal fuel pressure is critical to achieving consistent power delivery and engine reliability, especially when running upgraded injectors or forced induction setups. This regulator’s wide adjustment range and robust construction ensure it can handle the demands of performance builds while supporting smooth drivability and tuning flexibility.

Features & Specifications

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

• Brand: Fuelab
• Product: Adjustable EFI Fuel Pressure Regulator 25-90 psi (2) -10AN Inlets (1) -6AN Return Black
• Part Number: 51501-1
• Fitment: Universal
• Material: Billet Aluminum
• Finish: Black Anodized (MIL-A-8625, Type II)
• Construction: CNC Machined with Fine Thread Pitch Adjustment
• Origin: Not Specified
• Pressure Range: 25-90 psi
• Inlet Ports: Two -10AN
• Return Port: One -6AN
• Fuel Compatibility: Gasoline, Diesel, Methanol, Ethanol
• 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 engine performance and reliability across various fuel types.
• Durability: Billet aluminum construction with military-grade anodizing ensures long-lasting corrosion resistance and strength.
• Fitment: Universal design with multiple inlet and return ports accommodates a wide range of Subaru EFI setups and custom installations.
• Adjustability: Fine thread pitch adjustment allows for accurate and repeatable fuel pressure settings to match specific tuning needs.
• Monitoring: Integrated gauge and pressure reference ports facilitate real-time fuel pressure monitoring and diagnostics.
• Value: Backed by a limited lifetime warranty, providing peace of mind for Subaru enthusiasts investing in fuel system upgrades.

What's Included

• 1× Fuelab Adjustable EFI Fuel Pressure Regulator 25-90 psi (2) -10AN Inlets (1) -6AN Return Black
• Versatile mounting bracket
• Stainless steel mounting hardware
• 1/8 inch NPT gauge port plug
• Installation instructions

Installation & Compatibility

Installation of the Fuelab Adjustable EFI Fuel Pressure Regulator is generally straightforward for those familiar with fuel system plumbing and tuning. The universal fitment and included mounting bracket provide flexibility for various engine bays, including Subaru WRX, STI, BRZ, and other EFI-equipped models. Basic hand tools are sufficient for mounting and plumbing, but care should be taken to ensure proper sealing of AN fittings and secure mounting to avoid vibration issues. Tuning is recommended to optimize fuel pressure settings for your specific setup, especially when upgrading injectors or forced induction components.

• Professional Installation: Recommended for those unfamiliar with EFI fuel systems
• Modifications Required: None; designed for universal compatibility
• Verify Compatibility: Confirm fitment and fuel system requirements for your specific Subaru model and year

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