Fuelab 550LPH Twin Screw Brushless In-Line Fuel Pump

Fuelab 550LPH Twin Screw Brushless In-Line Fuel Pump | 550 LPH @ 45PSI | High-Flow Fuel Pump

Overview

The Fuelab 550LPH Twin Screw Brushless In-Line Fuel Pump is a high-performance fuel delivery solution designed for Subaru enthusiasts seeking reliable, efficient fueling for builds up to 1250 horsepower. This pump supports gasoline, diesel, methanol, and ethanol fuels, making it versatile for a wide range of Subaru platforms and power levels. Its twin screw rotor mechanism ensures smooth, consistent fuel flow at pressures up to 125 PSI, ideal for high-boost turbocharged or heavily modified naturally aspirated engines.

Engineered with a lightweight, brushless DC motor, this pump minimizes current draw and noise while maximizing durability. The wet motor design eliminates dynamic shaft seals, reducing wear and improving longevity even with low-sulfur diesel or aggressive fuels. Constructed from billet aluminum with MIL-A-8625 anodizing, the pump combines robust build quality with compact dimensions for easy integration into Subaru fuel systems.

For Subaru owners pushing power limits, the Fuelab 550LPH pump offers superior priming capabilities and enhanced resistance to cavitation and vapor lock. This ensures consistent fuel delivery under demanding conditions, supporting reliable tuning and performance gains. Whether upgrading a WRX STI or building a high-output Forester or Legacy, this pump delivers the flow and pressure needed to maintain safe air-fuel ratios and maximize power potential.

Features & Specifications

This Fuelab 550LPH Twin Screw Brushless In-Line Fuel Pump is engineered for universal fitment and features a 550 liters per hour flow rate at 45 PSI. Constructed from billet aluminum with anodized finish, it delivers high efficiency and durability for Subaru enthusiasts seeking reliable high-flow fuel delivery for builds up to 1250 horsepower.

• Brand: Fuelab
• Product: 550LPH Twin Screw Brushless In-Line Fuel Pump
• Part Number: 47403
• Fitment: Universal
• Material: Billet Aluminum
• Finish: Anodized per MIL-A-8625, Type II
• Construction: Billet aluminum housing with twin screw rotor pump mechanism
• Origin: Not specified
• Flow Rate: 550 LPH @ 45 PSI
• Maximum Pressure: 125 PSI
• Power Support: Rated up to 1250 HP continuous
• Motor Type: Lightweight DC brushless motor
• Voltage Compatibility: 12 to 16 volts
• Controller Included: Model 72004 Pump Controller with full speed or PWM input speed control
• Seals: Fluorosilicone static seals, multi-fuel compatible
• Fittings: Accepts standard or port style -8AN fittings
• Weight: Less than 3 lbs
• Dimensions: Overall length 7.13", diameter 2.0"
• Mounting: Includes two billet aluminum mounting brackets

Key Benefits

• Performance: Supports continuous fueling for up to 1250 horsepower, ideal for high-output Subaru builds.
• Durability: Brushless motor design eliminates wear points and corrosion issues, extending pump life.
• Efficiency: High efficiency motor reduces current draw and noise, improving electrical system reliability.
• Reliability: Superior priming and cavitation resistance prevent vapor lock under demanding driving conditions.
• Fitment: Compact, lightweight design with universal fitment and included mounting brackets for flexible installation.
• Multi-Fuel Compatibility: Suitable for gasoline, diesel, methanol, and ethanol fuels, supporting diverse Subaru applications.

What's Included

• 1× Fuelab 550LPH Twin Screw Brushless In-Line Fuel Pump
• 2× Billet aluminum mounting brackets
• Model 72004 Pump Controller with full speed and PWM input control
• Installation instructions

Installation & Compatibility

Installation of the Fuelab 550LPH pump is generally straightforward for experienced enthusiasts familiar with fuel system upgrades, though professional installation is recommended to ensure proper wiring and plumbing. The pump is designed for universal fitment but verify compatibility with your specific Subaru model and fuel system setup. No special tools beyond standard fuel system and electrical tools are required. Tuning is recommended to optimize fueling parameters and ensure safe air-fuel ratios when upgrading to this high-flow pump.

• Professional Installation: Recommended
• Modifications Required: Minor plumbing and wiring adjustments typical of fuel pump upgrades
• Verify Compatibility: Confirm fitment and fuel system compatibility for your Subaru platform

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