Radium Engineering Multi-Port Regulator Rotating Assembly | Adjustable Fuel Pressure | Universal EFI Fuel Pressure Regulator

Overview

The Radium Engineering Multi-Port Regulator Rotating Assembly is a versatile, adjustable fuel pressure regulator designed for EFI vehicles with fuel pump flows ranging from 200 to 1400 liters per hour. This universal regulator is ideal for Subaru enthusiasts and other EFI users who require precise fuel pressure control in complex or simple fuel systems. Its compatibility with a wide range of fuels, including E85, methanol, ethanol, and various gasoline blends, makes it a reliable choice for performance builds and daily drivers alike.

Engineered with a unique multi-port configuration, this regulator excels at combining dual fuel pumps into a single feed line or splitting a single feed line to dual fuel rails. The innovative tool-less pressure adjustment knob allows for quick and accurate tuning without the need for jam nuts or set screws, eliminating common vacuum or boost leaks. The 360-degree rotating vacuum reference port with multiple fitting options further enhances installation flexibility, making it suitable for a variety of fuel system layouts.

For Subaru owners focused on maintaining stable and consistent fuel pressure under high-flow conditions, this regulator offers proven performance backed by extensive track and bench testing. Its stainless steel return orifice ensures laminar flow for pressure stability, which is critical for reliable engine operation and tuning. Whether upgrading fuel delivery for a WRX STI or building a high-output BRZ, this regulator supports precise fuel management essential for maximizing power and drivability.

Features & Specifications

This Radium Engineering Multi-Port Regulator Rotating Assembly is engineered for universal EFI applications and features a tool-less adjustable fuel pressure knob with a 360-degree rotating vacuum port. Constructed from high-quality anodized aluminum and stainless steel components, it delivers stable fuel pressure control and versatile installation options for Subaru enthusiasts seeking reliable and flexible fuel system solutions.

• Brand: Radium Engineering
• Product: Multi-Port Regulator Rotating Assembly
• Part Number: 20-1100-00
• Fitment: Universal EFI Vehicles
• Material: Anodized Aluminum, Stainless Steel
• Finish: Black Anodized Top
• Construction: Precision Machined with Stainless Steel Return Orifice
• Origin: Not Specified
• Fuel Compatibility: Gasoline (Unleaded, Leaded, Oxygenated), Methanol, Ethanol, E85
• Fuel Pump Flow Range: 200 to 1400 LPH
• Pressure Adjustment: Tool-less Knob with Incremental Detents (±0.5 psi per detent)
• Vacuum Reference Port: 360° Rotating, Double O-Ring Sealed with Multiple Fittings Included
• Included Vacuum Fittings: 5mm Barbed, 3AN Male, 1/4" Push-To-Connect, Vacuum Plug
• Mounting Options: M6 Through-Holes and Included Mounting Bracket with Hardware
• Return Ports: Two Lower Opposing Ports Flow Parallel with Pressure Ports

Key Benefits

• Performance: Precise, tool-less fuel pressure adjustment improves tuning accuracy and engine response.
• Durability: High-quality anodized aluminum and stainless steel components ensure long-lasting reliability under demanding conditions.
• Fitment: Universal design with multiple vacuum fittings and mounting options suits a wide range of Subaru platforms and custom EFI setups.
• Adjustability: 360-degree rotating vacuum port and plug options provide unmatched installation flexibility.
• Fuel Compatibility: Supports a broad spectrum of fuels including E85 and alcohol blends, ideal for performance and alternative fuel applications.
• Stability: Laminar flow stainless steel return orifice enhances fuel pressure stability critical for consistent engine operation.

What's Included

• 1× Radium Engineering Multi-Port Regulator Rotating Assembly
• 1× Mounting Bracket with M6 Hardware
• 1× 5mm Barbed Vacuum Fitting
• 1× Vacuum Plug Fitting (Returnless)
• 1× 1/4" Push-To-Connect Vacuum Fitting
• 1× 3AN Male Vacuum Fitting
• 2× 6AN ORB Plugs
• 1× 8AN ORB Plug
• 3× 6AN ORB to 6AN Male Adapters
• 1× 8AN ORB to 8AN Male Adapter

Installation & Compatibility

Installation of the Radium Engineering Multi-Port Regulator is straightforward for those familiar with fuel system plumbing, with multiple mounting options including bracket and through-hole mounts. The tool-less pressure adjustment knob simplifies tuning without specialized tools. Vacuum reference fittings are included to accommodate various hose types and orientations, enhancing ease of installation. While the regulator is universal, confirming compatibility with your specific Subaru model and fuel system setup is recommended. No special tools beyond standard fuel system plumbing equipment are required. For optimal performance, ensure proper fuel pump controller settings and consider professional tuning support when integrating into high-performance builds.

• Professional Installation: Recommended for complex fuel system setups
• Modifications Required: None; plugs included for unused ports
• Verify Compatibility: Confirm fitment for your specific Subaru platform and fuel system configuration

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