Walbro 450 LPH fuel pump F90000267 for E85 — in-tank high-flow support up to ~750 HP

The Walbro F90000267 is an in-tank, high-flow 450 LPH electric fuel pump designed for E85 and flex-fuel applications that supports up to about 750 horsepower when paired with compatible fuel systems.

This compact, high-performance Walbro pump delivers consistent flow for modified engines and flex-fuel vehicles. Built for use inside the fuel tank, the unit features a filter-sock inlet and a design optimized for ethanol blends (E85). It’s supplied as the pump assembly only, intended for installation into compatible Walbro or OEM sender housings and return/pressure-regulated systems.

How much fuel flow and power support does this pump provide?

The F90000267 produces roughly 450 liters per hour (LPH) of fuel flow, which is commonly used in high-output naturally aspirated and forced-induction setups. That flow level can support power levels up to the mid-700s horsepower range depending on system plumbing and fuel pressure.

• Rated flow: 450 LPH under typical in-tank conditions
• Power support: suitable for builds up to ~750 hp with correct fuel pressure
• Best matched to systems with appropriate regulators and return lines

Is this pump compatible with E85 and other ethanol blends?

Yes — the Walbro F90000267 is specified for E85 and other flex-fuel applications. Internal materials and coatings are selected to resist ethanol’s increased corrosivity compared with gasoline, making it suitable for long-term use with ethanol blends when installed properly.

• Designed for FFV (flex-fuel vehicle) compatibility
• Materials resistant to ethanol and high-alcohol fuels
• Use with appropriate lines and seals rated for E85

What installation details should I know before buying?

This listing includes the pump assembly only, not the sender, mounting hardware, or external regulator. It’s intended to be installed inside a compatible tank or Walbro-style housing; professional installation is recommended if you’re not experienced with in-tank pumps.

• Filter sock inlet included for debris protection
• Pump-only: verify compatibility with your sender and wiring harness
• Electrical connector and plumbing must match vehicle or adapter kit

How does this pump perform in real-world driving and track conditions?

The F90000267 provides steady, high-volume fuel delivery under sustained load and high-demand conditions typical of track driving and aggressive street use. In-tank mounting helps keep the pump cooled and reduces the risk of vapor lock compared with external pumps.

• Consistent pressure and flow during sustained high-load operation
• In-tank placement improves cooling and reliability
• Filter sock reduces particulate ingestion and extends service life

Who is this for: Enthusiasts upgrading to higher horsepower or converting to E85, tuners building forced-induction or high-flow naturally aspirated engines, and professional shops needing a reliable in-tank pump option. Choose this Walbro unit if you require a compact, ethanol-capable pump rated around 450 LPH and intend to use it with compatible in-tank housings, regulators, and fuel system plumbing.