Cobb Tuning High Flow Fuel Pump - 2015-2021 Subaru STI

The AEM 340LPH E85-Compatible High Flow In-Tank Fuel Pump is built for enthusiasts who need reliable fuel delivery for higher-performance gasoline, flex fuel, and full ethanol setups. Designed with robust internal components that can handle the lower lubricity of ethanol and methanol fuels, this pump is tested to work with E100, M100, and all types of gasoline.

Its compact 65mm short-body design with mounting hooks makes it a strong choice for direct replacement and universal applications where fuel tank space is tight. Every pump is individually tested to flow 340 liters per hour at 40 PSI before packaging, giving you confidence in both performance and consistency.

Key Features

• 340LPH Flow Rate: Tested to flow 340 liters per hour at 40 PSI.
• E85 / Ethanol Compatible: Tested for use with ethanol fuels up to E100.
• Methanol Compatible: Tested for use with methanol fuels up to M100.
• Gasoline Compatible: Safe for use with all types of gasoline.
• Compact Short-Body Design: 65mm length helps with fitment in tighter fuel tank applications.
• Universal-Friendly Form Factor: Mounting hooks and compact size make it suitable for many in-tank applications.

Why We Like It

When looking for a drop-in style pump that can support the demands of flex fuel and higher-output Subaru builds, the AEM 340 checks all the right boxes. It is compact, proven, ethanol-capable, and has become a go-to choice for more serious fuel system upgrades. This pump is also a key component in COBB NexGen Stage 2 and Flex Fuel Power Packages.

Specifications

• Flow Rate: 340LPH @ 40 PSI
• Body Length: 65mm
• Body Diameter: 39mm
• Fuel Compatibility: Gasoline, E100 ethanol, M100 methanol
• Design: Compact in-tank high flow fuel pump

What’s in the Box

• (1) AEM 340LPH E85-Compatible High Flow In-Tank Fuel Pump
• Wiring harness
• Pre-filter
• O-rings

Installation Notes

Cobb Tuning officialInstall Instructions

• Compact design allows for direct replacement fitment in many applications.
• Always verify fuel system compatibility and installation requirements before purchase.
• Professional installation is recommended when upgrading fuel system components on tuned or flex fuel vehicles.

Compatibility & Disclaimers

Fitment can vary by vehicle and fuel basket design, so always confirm compatibility before ordering. Fuel system modifications may require supporting tuning and additional components depending on your setup and power goals.

Emissions