Aeromotive 450lph Drop-In Stealth Fuel System Subaru WRX / STI 2008-2021 | 18081

Product Fitment: 

2008-2021 Subaru WRX

2008-2021 Subaru STI

Built for serious performance builds, the Aeromotive 450 LPH in-tank fuel pump delivers high-flow fuel support for turbocharged and naturally aspirated Subaru WRX and STI models from 2008 to 2021. With a horsepower rating that far exceeds OEM fuel systems, this pump is a must-have for high-output applications using pump gas or E85.

Key Features

• Massive Flow Rate – Delivers up to 450 liters per hour, supporting:

  • Up to 1100 HP naturally aspirated (gasoline)

  • Up to 800 HP forced induction (gasoline)

  • Up to 750 FWHP naturally aspirated (E85)

  • Up to 550 FWHP forced induction (E85)

• Motorsport-Grade Construction – Engineered for high pressure, high demand fuel delivery environments

Vehicle Compatibility

• Subaru WRX: 2008–2021

• Subaru WRX STI: 2008–2021

• Direct replacement for OEM in-tank fuel pump

• Ideal for builds featuring upgraded turbochargers, injectors, or ethanol-based fuels

Note: Always verify vehicle compatibility and fuel system layout before ordering.

Why Upgrade to a 450 LPH Pump?

When you're pushing more boost or running E85, your factory fuel pump quickly becomes a bottleneck. Upgrading to a 450 LPH pump gives your engine the consistent, high-volume fuel supply it needs to perform safely under load. Avoid lean conditions and fuel starvation with a pump that’s built to deliver under pressure.

Installation & Usage Notes

• Tuning Required – ECU recalibration is strongly recommended to match increased fuel flow.

• Fuel System Check – Ensure fuel lines, filter, and regulator can support increased pressure and volume.

• Proper Wiring – Voltage supply and grounding must meet pump requirements for safe operation.

• Emissions Compliance – Check local regulations regarding fuel system modifications.

What’s in the Box

• 1x Aeromotive 450 LPH In-Tank Fuel Pump (P/N 18081)

• Installation instructions

• Warranty information

If your WRX or STI build is pushing limits, don’t let the factory fuel system hold you back. The Aeromotive 450 LPH in-tank fuel pump delivers serious performance, reliability, and headroom for high-horsepower builds — both on gasoline and ethanol-based fuels.