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380LPH In Line External Fuel Pump w/ Fitting Options - E85-Compatible Automotive Performance, QFS-606FT High Flow Fuel

$95.98 - $126.98

380LPH In Line External Fuel Pump w/ Fitting Options - E85-Compatible Automotive Performance, QFS-606FT High Flow Fuel

$95.98 - $126.98

SKU:: QFS-606FT-0-BC
MPN:: QFS-606FT-0
Availability:: In stock, ready to ship

Current Stock:

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Guaranteed Fit

U.S. Based Support

Lifetime Warranty

Description
Specifications
Warranty

High Flow Fuel pumps by Quantum Fuel Systems

Quantum's 380LPH high-pressure fuel pump for high-performance EFI vehicles is now available. The QFS-606FT can be installed externally (frame mounted) or in-tank. It utilizes the widely available -6AN inlet and 6AN outlet connections for easy installation and quick replacement of lesser flowing competitors' fuel pumps, such as the venerable Bosch 044.Quantum's 380LPH fuel pump is capable of supporting over 1,200 HP naturally aspirated and over 1000 HP in forced induction applications. It flows 380LPH (100gph) at 43 PSI, 340LPH (90gph) at 73 PSI, and 270LPH (71gph) at 120 PSI.Quantum's 380LPH fuel pump is designed for use with gasoline or E85. Terminal nuts and terminal boots are also included.

Features & Benefits

Corrosion-resistant case to minimize seizing during non-operation

Specifically designed for quiet operation

Patented check valve technology

Compatible with modern ethanol-infused pump gasoline

WARNING

This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Brand Name:: Quantum

Quantum brand products are backed by an industry-leading lifetime warranty. For fuel pumps, assemblies, regulators, and check valves, we will replace any unit that fails due to a defect in workmanship or materials for as long as you own the vehicle.

Serviceable & Wear Items: Please note that fuel filters, strainers, and rubber components (seals/grommets) are considered maintenance items. While these are protected against manufacturing defects, the lifetime warranty does not cover replacement for items that have reached the end of their functional service life due to normal debris accumulation or natural material aging (such as cracking or swelling from long-term fuel exposure).

This warranty applies only to the original purchaser and is non-transferable. Improper use or installation voids the warranty. Quantum is not responsible for incidental costs resulting from product failure. Contact customer service to troubleshoot, diagnose issues, and file a warranty claim.

QFS-606FT 380LPH Inline External Fuel Pump

QFS-606FT is built for drivers who have already outgrown what a stock inline fuel pump can deliver. Rated up to 380 LPH, this external fuel pump is engineered to supply the volume and pressure that high-output engines demand, whether you are running pump gas, race fuel, or a dedicated E85 fuel pump setup. It is a proven upgrade for anyone tired of chasing lean spikes under load.

Flow That Matches Real Horsepower Demands

QFS-606FT flows 380 LPH at 43 PSI, 340 LPH at 73 PSI, and 270 LPH at 120 PSI, giving you a real performance curve instead of a single optimistic number. That range supports naturally aspirated builds past 1,200 horsepower and forced induction combinations over 1,000 horsepower, so the fuel system stops being the limiting factor in your build.

Built for E85 and Modern Fuel Blends

Switching to ethanol should not mean gambling on pump longevity. QFS-606FT is designed to run on gasoline or E85 without hesitation, with a corrosion-resistant case that minimizes seizing during storage or off-season sitting. That makes it a dependable E85 fuel pump choice for street cars and dedicated race builds alike.

Fitting Flexibility for Any Fuel System

This inline fuel pump ships with 6AN, 8AN, and 10AN inlet and outlet options, a version with or without a check valve, a 3/8 inch barbed fitting configuration, and a pump-only build for custom setups. Terminal nuts and terminal boots are included, so you are not left improvising wiring connections on install day.

Why Racers Choose QFS-606FT

Picking an external fuel pump for a serious build comes down to trust. You need to know it will flow what it claims, hold up to E85, and still be backed by a company that stands behind it. QFS-606FT checks every one of those boxes, which is why it has become a go-to inline fuel pump for enthusiasts building real power.

Reasons to Choose QFS-606FT

Verified flow at three pressure points, not a single inflated marketing number
Gasoline and E85 compatible in the same pump, no separate ethanol-only version needed
Multiple AN fitting sizes and a barbed option so it fits your fuel line, not the other way around
Corrosion-resistant case built to survive winter storage and off-season sitting
Industry-leading lifetime warranty against defects in workmanship or materials
US-based support from a team that actually understands fuel systems

What Problems QFS-606FT Solves

Most fuel delivery problems trace back to one root cause: the pump was never built for the demand placed on it. A stock inline fuel pump is sized for factory horsepower, not a built motor, boost, or a switch to E85. Here is what shows up when that gap catches up with you, and how QFS-606FT closes it.

Fuel Starvation Under Boost or Load

Symptom A lean spike, hesitation, or knock retard right when you are on the throttle hardest.

Cause Your existing external fuel pump physically cannot flow enough volume once cylinder pressure and demand climb.

Fix QFS-606FT holds real flow at 43, 73, and 120 PSI, so pressure does not collapse when you need it most.

Inconsistent Pressure After an E85 Conversion

Symptom Fuel trims that drift, rough idle, or a pump that sounds strained after switching to ethanol.

Cause Not every inline fuel pump is actually rated for E85, and ethanol is harder on internal components over time.

Fix QFS-606FT is built as a true E85 fuel pump from the start, with materials selected to handle it.

OEM Pump Can't Keep Up With Modifications

Symptom Everything ran fine stock, but new injectors, a bigger turbo, or nitrous exposed a ceiling.

Cause The factory pump was matched to factory power, and there is no margin left once you add real modifications.

Fix QFS-606FT gives you headroom up to 1,200-plus naturally aspirated horsepower or 1,000-plus boosted, so future upgrades do not mean revisiting the fuel pump again.

Best QFS-606FT Applications For:

QFS-606FT is a universal external fuel pump, so it is not locked to one specific make or model. Instead, think about it in terms of what your build actually needs to flow at the track or on the street. These are the three groups of drivers where this inline fuel pump earns its keep the most, based on real demand rather than a badge on the fender.

Naturally Aspirated Power Builds

Big-cube naturally aspirated engines pushing past 1,200 horsepower need consistent volume at higher RPM, not just off idle. QFS-606FT's 380 LPH rating at 43 PSI gives NA builds the margin to keep pulling hard through the top of the rev range without a pressure drop, even on long pulls at the strip or on a road course.

Forced Induction and Nitrous Applications

Boosted and nitrous-assisted combinations over 1,000 horsepower load the fuel system differently than naturally aspirated power, with sudden demand spikes under spray or full boost. This external fuel pump's 73 and 120 PSI flow points were built for exactly that kind of transient demand, so pressure holds steady when the throttle drops and boost comes in fast.

E85 and Flex-Fuel Race Programs

Ethanol-heavy programs need a pump that will not degrade over a full season of racing or daily driving. As a true E85 fuel pump, QFS-606FT holds up to corrosive fuel blends while still delivering the same reliable flow curve you would get running pump gas or race fuel, with no separate ethanol-only version required.

QFS-606FT vs. Other Aftermarket Pumps

QFS-606FT vs. OEM Table
Feature	QFS-606FT	Other Aftermarket Pumps
Warranty	Industry-leading lifetime warranty on defects in workmanship or materials for the original purchaser	Coverage varies widely by brand, often capped at 1 to 2 years or prorated after the first year
Product Testing / QC	Every QFS-606FT is tested in-house in Ventura, California, and inspected before it ships	Testing standards vary by manufacturer, with many relying on batch sampling instead of per-unit verification
Materials and Construction	Corrosion-resistant case engineered for gasoline and E85 without extra parts	Build quality and ethanol compatibility vary by brand, with some requiring add-on components for E85 use
Performance vs. Spec	Verified flow curve at 380 LPH/43 PSI, 340 LPH/73 PSI, and 270 LPH/120 PSI	Flow data is often limited to a single rated figure, making performance under real operating pressure hard to confirm
Price	$95.98 to $126.98 depending on fitting configuration	Pricing spans a wide range, and lower cost options often trade off tested reliability
Availability	Stocked and ready to ship, with no dependency on dealer backorder timelines	Frequently subject to dealer backorder and manufacturer supply chain delays, especially on older or less common fitments
Support (US-Based)	US-based technical support team that understands performance fuel systems	Support quality varies by brand, with some routing through general resellers rather than a manufacturer technical line

What to Expect After Installing QFS-606FT

Expect steady fuel pressure at wide-open throttle, no more lean-out warnings under boost, and a pump that runs quietly at idle. Most drivers notice the biggest difference at the top of the power band, where a weaker inline fuel pump used to fall behind. Give it a short break-in and confirm pressure with a gauge before your first hard pull.

How QFS-606FT Is Built and Tested

A flow number on a spec sheet only matters if the pump behind it is actually built and checked to hit that number under real conditions. Every QFS-606FT external fuel pump goes through the same disciplined process before it ever reaches your garage or a shop counter, and that process is what separates a real inline fuel pump from a part that just looks good on paper.

01

In-House Product Testing in Ventura, California

QFS-606FT is tested in-house at our Ventura, California facility rather than relying solely on a supplier's word or a datasheet from overseas. Flow and pressure are checked against the full rated curve: 380 LPH at 43 PSI, 340 LPH at 73 PSI, and 270 LPH at 120 PSI, so the numbers on the spec sheet match what actually leaves the building.
02

Every Item Inspected Before It Ships

Before any QFS-606FT is boxed up, it is visually and functionally inspected by hand. That extra step catches fitment issues, loose terminals, or assembly problems before they ever become a comeback, so what arrives at your door is genuinely ready to install, not just ready to be returned or reworked.
03

Meeting or Exceeding Industry Standards for Process and Materials

From the corrosion-resistant case to the internal components rated for E85, QFS-606FT is built to meet or exceed accepted industry standards for performance fuel pumps, not just squeeze by on the minimum spec. That is the same standard we hold every external fuel pump in the QFS lineup to before it ships.

Frequently Asked Questions

What flow rates does QFS-606FT support?

QFS-606FT flows 380 LPH at 43 PSI, 340 LPH at 73 PSI, and 270 LPH at 120 PSI across its full pressure curve. That range covers naturally aspirated engines over 1,200 horsepower and forced induction builds over 1,000 horsepower, giving most performance applications real headroom instead of a single best-case marketing number.

Is QFS-606FT compatible with E85 fuel?

Yes. QFS-606FT is designed to run on gasoline or E85 without any hardware changes, making it a solid E85 fuel pump option whether you run pump gas year-round or switch to ethanol for race weekends and track days. The corrosion-resistant case also helps it survive off-season storage without seizing up between uses.

What fitting sizes are available for QFS-606FT?

This inline fuel pump is available with 6AN, 8AN, or 10AN inlet and outlet fittings, with or without a check valve, plus a 3/8 inch barbed hose option and a pump-only configuration for builders running a fully custom fuel system layout. Terminal nuts and terminal boots are included in every configuration you choose.

Can QFS-606FT be mounted in-tank, or is it external only?

QFS-606FT is built as an external fuel pump for frame or chassis mounting, which makes service, inspection, and troubleshooting easier than reaching into a tank. Always follow proper mounting, grounding, and fuel line practices when installing any external fuel pump on your vehicle to keep the system safe and reliable.

What does QFS-606FT's warranty cover?

QFS-606FT carries an industry-leading lifetime warranty covering defects in workmanship or materials for the original purchaser, for as long as you own the pump. Maintenance items like filters and rubber components are not covered, since those are expected wear parts on any external fuel pump over time, no matter how well the pump itself is built.

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EMAIL: SUPPORT@HIGHFLOWFUEL.COM
CALL: 818-574-3835
CHAT: 7:00AM-3:30PM PST M-F

380LPH In Line External Fuel Pump w/ Fitting Options - E85-Compatible Automotive Performance, QFS-606FT High Flow Fuel

380LPH In Line External Fuel Pump w/ Fitting Options - E85-Compatible Automotive Performance, QFS-606FT High Flow Fuel

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