Walbro 450 LPH E85 Fuel Pump — In-Tank High-Flow Assembly for ~750 HP Support

The Walbro F90000267 is an in-tank electric fuel pump that delivers up to 450 liters per hour and is compatible with E85 for flexible-fuel performance applications.

This high-flow replacement pump is designed for in-tank installation in vehicles that require increased fuel delivery for modified engines or flexible-fuel operation. Built by Walbro, a long-standing supplier of performance fuel systems, the F90000267 supports elevated demand while fitting common in-tank configurations; it’s supplied as the pump assembly only and is intended for use with suitable filtration and installation hardware.

How much flow and power support does this pump provide?

The F90000267 is rated at approximately 450 liters per hour (lph), intended to support engines up to the ballpark of 750 hp when paired with an appropriately matched fuel system. This flow rating helps maintain stable fuel pressure under high load and during sustained high-RPM operation.

• Nominal flow: 450 lph at reference pressure
• Estimated suitability: up to ~750 hp with correct fuel pressure setup
• Designed for continuous duty in high-demand conditions
• Intended for in-tank mounting to reduce vapor lock risk

Is this pump compatible with E85 and flexible-fuel vehicles?

Yes — the F90000267 is engineered for compatibility with ethanol blends like E85, making it suitable for flexible-fuel vehicle (FFV) applications. Materials and internal components are selected to resist alcohol-based fuels versus standard gasoline-only pumps.

• E85-compatible construction for ethanol-resistance
• Suitable for FFV conversions and high-ethanol setups
• Requires proper seals and fittings for alcohol fuels
• Use with appropriate fuel lines and connectors rated for E85

What comes in the package and what do I need to install it?

This listing is for the pump assembly only — the Walbro F90000267 pump with its filter sock inlet. Installation typically requires a compatible in-tank module or housing, electrical connectors, fittings, and often a new fuel strainer, retaining ring, or sealing components specific to the vehicle.

• Included: Walbro F90000267 pump assembly with filter sock inlet
• Not included: in-tank housing, mounting hardware, or external regulators
• Recommended: new fuel filter/strainer and vehicle-specific seal kit
• Professional or experienced DIY installation advised for in-tank work

How does this pump affect fuel system reliability and maintenance?

When installed and matched correctly, a high-flow pump like this helps prevent fuel starvation under heavy loads and can reduce stress on the engine by maintaining adequate pressure. Regular maintenance of the tank filter sock and periodic inspection of electrical connections prolong service life.

• Improves high-demand fuel delivery to avoid lean conditions
• Regularly replace the filter sock to prevent clogging
• Inspect wiring and connectors for secure electrical supply
• Pair with compatible pressure regulators and return lines

Who is this for: The Walbro F90000267 450 LPH pump is aimed at performance enthusiasts, tuners, and flexible-fuel vehicle owners who need higher fuel flow than stock equipment provides. It’s appropriate for modified street cars, track vehicles, and any application where E85 compatibility and in-tank installation are required. If you plan a high-horsepower build or an FFV conversion, ensure the rest of your fuel system (lines, fittings, regulator, and tank components) is upgraded and that installation follows safety best practices.