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

Fuelab Adjustable Mini EFI Fuel Pressure Regulator Purple | 25-90 PSID Adjustable Range | EFI Fuel Pressure Regulator

Overview

The Fuelab Adjustable Mini EFI Fuel Pressure Regulator is a compact, high-performance component designed to provide precise fuel pressure control for a wide range of fuel-injected applications. Ideal for Subaru enthusiasts upgrading their fuel systems or tuning for increased power, this regulator supports gasoline, diesel, methanol, and ethanol fuels, making it versatile for various builds. Its adjustable pressure range of 25 to 90 PSID allows fine-tuning to optimize fuel delivery and engine performance.

Engineered with a billet aluminum body anodized to military specifications (MIL-A-8625, Type II), this regulator combines durability with lightweight design, weighing 50% less than Fuelab’s larger 515/525 series models. The fine thread pitch adjustment mechanism ensures precise control over fuel pressure, while the compact size and versatile mounting bracket enable installation in tight engine bays common in Subaru platforms. The inclusion of multiple ports for fuel inlet, return, pressure reference, and gauge connection reflects thoughtful engineering for both professional and enthusiast use.

For Subaru owners, maintaining consistent and accurate fuel pressure is critical to achieving reliable performance gains, especially when running upgraded injectors or forced induction setups. This regulator’s adaptability and robust construction make it a dependable choice for tuning and daily driving alike, ensuring your engine receives the correct fuel flow under all conditions.

Features & Specifications

This Fuelab Adjustable Mini EFI Fuel Pressure Regulator is engineered for universal fitment and features a 25-90 PSID adjustable pressure range. Constructed from billet aluminum with a military-grade anodized finish, it delivers precise fuel pressure control for Subaru enthusiasts seeking reliable and compact EFI fuel regulation.

• Brand: Fuelab
• Product: Adjustable Mini EFI Fuel Pressure Regulator Purple
• Part Number: 53501-4
• Fitment: Universal
• Material: Billet Aluminum
• Finish: Purple Anodized (MIL-A-8625, Type II)
• Construction: CNC Machined
• Origin: Not specified
• Fuel Compatibility: Gasoline, Diesel, Methanol, Ethanol
• Pressure Range: 25-90 PSID Adjustable
• Inlet Ports: Two -6AN
• Return Port: One -6AN
• Gauge Port: 1/8 inch NPT with plug
• Pressure Reference Port: 1/8 inch NPT with barbed fitting
• Weight: Approximately 50% lighter than Fuelab 515/525 Series
• Mounting: Versatile bracket with stainless steel hardware included

Key Benefits

• Performance: Precise fuel pressure adjustment supports optimal fuel delivery for tuned Subaru engines.
• Durability: Billet aluminum construction with military-grade anodizing ensures long-lasting corrosion resistance.
• Fitment: Compact design and versatile mounting bracket allow installation in tight engine bays common to Subaru platforms.
• Compatibility: Supports multiple fuel types including gasoline, diesel, methanol, and ethanol for diverse applications.
• Adjustability: Fine thread pitch adjustment enables accurate and repeatable pressure settings between 25 and 90 PSID.
• Convenience: Integrated gauge and pressure reference ports simplify monitoring and tuning processes.

What's Included

• 1× Fuelab Adjustable Mini EFI Fuel Pressure Regulator Purple
• Versatile mounting bracket
• Stainless steel mounting hardware
• 1/8 inch NPT plug for gauge port
• Installation instructions

Installation & Compatibility

The Fuelab Adjustable Mini EFI Fuel Pressure Regulator is designed for straightforward installation in most fuel-injected Subaru vehicles and other platforms. Its compact size and included mounting bracket facilitate mounting in limited space areas, though some familiarity with fuel system plumbing is recommended. Installation requires standard hand tools and basic mechanical knowledge. For optimal performance, tuning adjustments should be performed with proper fuel pressure gauges and by experienced tuners to ensure safe and reliable operation.

• Professional Installation: Recommended for best results
• Modifications Required: None; direct integration into existing fuel lines with -6AN fittings
• Verify Compatibility: Confirm fitment and fuel system requirements for your specific Subaru model and build

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