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

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

Overview

The Fuelab Adjustable EFI Fuel Pressure Regulator is a versatile, high-quality component designed to provide precise fuel pressure control for a wide range of EFI (Electronic Fuel Injection) applications. With an adjustable pressure range from 25 to 90 psi, this regulator is ideal for enthusiasts and tuners looking to optimize fuel delivery for performance or reliability. Its universal fitment makes it suitable for various Subaru platforms as well as other vehicles running EFI systems.

Crafted from billet aluminum and finished with a durable purple anodized coating that meets military MIL-A-8625, Type II standards, this regulator combines robust construction with precise engineering. The fine thread pitch allows for accurate pressure adjustments, while the inclusion of two -6AN inlet ports and a single -6AN return port ensures compatibility with common fuel line setups. Fuelab’s attention to detail extends to the mounting hardware and bracket, designed for flexible installation options.

For Subaru owners, maintaining consistent and adjustable fuel pressure is critical for tuning and maximizing engine performance, especially when upgrading injectors, fuel pumps, or running alternative fuels like ethanol or methanol. This regulator’s compatibility with gasoline, diesel, methanol, and ethanol fuels adds to its versatility, making it a reliable choice for those seeking precise fuel system management in their Subaru builds.

Features & Specifications

This Fuelab Adjustable EFI 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 durability and 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 Purple
• Part Number: 51502-4
• Fitment: Universal
• Material: Billet Aluminum
• Finish: Purple Anodized (MIL-A-8625, Type II)
• Construction: CNC Machined
• Origin: Not Specified
• Pressure Range: 25-90 psi (PSID)
• Inlet Ports: Two -6AN
• 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 included
• Warranty: Limited Lifetime

Key Benefits

• Performance: Enables precise fuel pressure tuning for optimized engine performance and fuel delivery consistency.
• Durability: Billet aluminum construction with military-grade anodizing ensures long-lasting corrosion resistance and strength.
• Fitment: Universal design with multiple inlet and return ports fits a wide range of Subaru EFI setups and other vehicles.
• Adjustability: Fine thread pitch allows for smooth, accurate pressure adjustments between 25 and 90 psi.
• Fuel Compatibility: Supports gasoline, diesel, methanol, and ethanol fuels, accommodating various tuning and fuel system needs.
• Installation Flexibility: Comes with a versatile mounting bracket and stainless steel hardware for secure and adaptable installation.

What's Included

• 1× Fuelab Adjustable EFI Fuel Pressure Regulator 25-90 psi Purple
• 1× 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 straightforward for those with basic mechanical skills and familiarity with fuel systems. The regulator’s universal design and included mounting bracket allow for flexible placement in the engine bay. Standard fuel line fittings (-6AN) are required, and care should be taken to ensure proper sealing and routing of fuel lines. No special tools beyond common hand tools are necessary, but professional installation is recommended for those unfamiliar with EFI fuel systems. Adjusting fuel pressure should be done carefully, ideally with a fuel pressure gauge connected to the regulator’s port for accurate readings.

• Professional Installation: Recommended for optimal safety and tuning accuracy
• Modifications Required: None, compatible with standard -6AN fuel lines
• Verify Compatibility: Confirm fitment for your specific Subaru model and fuel system setup

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