Upgrading your fuel system is a critical step when pushing your engine past stock power levels. A 340 LPH fuel pump delivers the volume needed for high-horsepower naturally aspirated, turbocharged, or supercharged setups.
This guide compares five top-rated 340 LPH in-tank pumps from Aeromotive and AEM, focusing on fitment, fuel compatibility, and inlet styles to help you choose the right one for your build.
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Aeromotive 340 LPH In-Tank Fuel Pump - 12V Electric High-Flow EFI - 11540
Best forCenter inlet setups
- 340 LPH at 40 PSI
- E85 compatible
ConsiderCheck fitment guide
AEM 50-1215 340LPH High Flow In-Tank Fuel Pump, E85 Compatible, 65mm
Best forE85 & methanol builds
- E85 and methanol safe
- 340 LPH at 40 PSI
ConsiderCheck hanger fitment
Aeromotive 340 LPH In-Tank Fuel Pump - 12V Electric High-Flow EFI - 11569
Best forGM style inlet
- GM style inlet
- 340 LPH at 40 PSI
ConsiderCheck catalog fitment
Aeromotive 340 LPH In-Tank Fuel Pump - 12V Electric High-Flow EFI - 11542
Best forInline inlet setups
- Inline inlet design
- 340 LPH at 40 PSI
ConsiderCheck fitment guide
AEM 50-1000 High Flow In-Tank Fuel Pump, Black, 4.055 x 1.535 x 1.535 inches
Best forGasoline-only builds
- 340 LPH at 40 PSI
- Offset inlet eases install
ConsiderNot for E85
Aeromotive 340 LPH In-Tank Fuel Pump – Center Inlet
Brand: Aeromotive
Reliable center-inlet pump for compatible hanger assemblies.
The Aeromotive 11540 is a high-flow in-tank pump delivering over 340 LPH at 40 PSI, making it suitable for demanding EFI and carbureted systems. Its compact 39mm OEM-style body fits select hanger assemblies, so you should reference the Aeromotive application catalog to confirm compatibility with your vehicle. The large center inlet simplifies plumbing in many stock-style setups.
This 12V electric pump supports high-output naturally aspirated, turbocharged, and supercharged engines with consistent performance. The turbine-style design ensures reliable in-tank operation and smooth fuel delivery, and it works with gasoline and E85. If you need a straightforward center-inlet pump for a compatible hanger, this is a solid choice.
- 340 LPH at 40 PSI
- E85 compatible
- Turbine design
- Check fitment guide
- Not universal fit
View all product features
- SUPERIOR HIGH-FLOW OUTPUT: High-performance in-tank fuel pump delivers over 340 LPH at 40 PSI, supporting demanding EFI and carbureted fuel system setups
- APPLICATION-SPECIFIC FITMENT: Compact OEM-style 39mm pump body designed for select in-tank hanger assemblies; reference the Aeromotive application catalog to confirm proper vehicle compatibility
- SUPPORTS HIGH-OUTPUT ENGINES: 12V electric fuel pump engineered to deliver increased fuel volume for naturally aspirated, turbocharged, and supercharged engines with consistent performance across a wide pressure range
- DURABLE TURBINE DESIGN: Turbine-style design provides reliable in-tank operation & smooth fuel delivery; compatible w/ gasoline & E85 fuels. Suitable for pulse-modulated or constant-voltage systems
- INSTALLATION KIT INCLUDED: Complete fuel pump kit includes universal filter sock, wiring pigtail, rubber hose, clamps, and grommet for streamlined installation
AEM 340lph E85-Compatible High Flow Fuel Pump
The AEM 50-1215 is an E85-compatible high-flow in-tank pump designed for high-performance naturally aspirated and forced induction vehicles. It flows 340 LPH at 40 PSI and is tested to work with ethanol fuels up to E100, methanol up to M100, and all types of gasoline. The compact 39mm diameter by 65mm length body fits most in-tank hanger assemblies.
This pump includes a wiring harness, pre-filter, and O-rings, giving you everything needed for installation. The offset inlet design eases routing in tight spaces. If you run ethanol or methanol fuels and want a pump that’s ready out of the box, this model is a strong contender. It’s built for reliable long-term use with alternative fuels.
- E85 and methanol safe
- 340 LPH at 40 PSI
- Compact 39mm body
- Check hanger fitment
- Wiring harness included
View all product features
- The AEM 340lph E85-Compatible High Flow In-Tank Fuel Pump is designed for in-tank mounting on high performance naturally aspirated and forced induction vehicles
- The 340lph E85-Compatible High Flow In-Tank fuel pump includes a wiring harness, pre filter and O-rings. Every AEM 340lph E85-Compatible Fuel Pump is tested to flow 340 lph at 40 PSI before it is packaged for sale
- Tested and compatible with ethanol fuels up to E100, methanol fuels up to M100 and all types of gasoline
- Compact body (39mm diameter x 65mm length)
- Includes pre filter, hose, clamps, flying lead, end cap and rubber buffer sleeve
- Fit type: Vehicle Specific
Aeromotive 340 LPH Fuel Pump – GM Style Inlet
The Aeromotive 11569 delivers the same high-flow output as its sibling pumps, providing over 340 LPH at 40 PSI for demanding EFI and carbureted setups. Its key difference is the GM-style inlet, which is designed to match specific General Motors hanger assemblies. The compact 39mm OEM-style body fits select in-tank applications, so verifying fitment with the Aeromotive catalog is essential.
This 12V electric pump supports high-output naturally aspirated, turbocharged, and supercharged engines with consistent fuel delivery. The turbine pump mechanism is engineered for reliable operation in pulse-modulated systems, and it’s compatible with gasoline and E85. If you need a direct-fit pump for a GM-style hanger, this model simplifies the installation process.
- GM style inlet
- 340 LPH at 40 PSI
- Turbine design
- Check catalog fitment
- Not universal
View all product features
- SUPERIOR HIGH-FLOW OUTPUT: High-performance in-tank fuel pump delivers over 340 LPH at 40 PSI, supporting demanding EFI and carbureted fuel system setups
- APPLICATION-SPECIFIC FITMENT: Compact OEM-style 39mm pump body designed for select in-tank hanger assemblies; reference the Aeromotive application catalog to confirm proper vehicle compatibility
- SUPPORTS HIGH-OUTPUT ENGINES: 12V electric fuel pump engineered to deliver increased fuel volume for naturally aspirated, turbocharged, and supercharged engines with consistent performance across a wide pressure range
- DURABLE TURBINE DESIGN: Features a turbine pump mechanism for reliable operation in pulse-modulated systems; electric 12V fuel pump compatible with gas and E85 fuels; designed for in-tank use only
- INSTALLATION KIT INCLUDED: Complete fuel pump kit includes universal filter sock, wiring pigtail, rubber hose, clamps, and grommet for streamlined installation
Aeromotive 340 LPH In-Tank Fuel Pump – Inline Inlet
The Aeromotive 11542 offers the same high-flow performance as the other Aeromotive pumps, delivering over 340 LPH at 40 PSI for EFI and carbureted systems. Its distinguishing feature is the inline inlet orientation, which is designed for specific hanger assemblies that require this layout. The 39mm OEM-style body ensures it fits select in-tank applications, so you should confirm compatibility with the Aeromotive catalog.
This 12V electric pump supports high-output naturally aspirated, turbocharged, and supercharged engines with consistent fuel delivery. The turbine pump mechanism provides reliable operation in pulse-modulated systems and works with gasoline and E85. If your hanger setup calls for an inline inlet, this pump eliminates the need for adapters or modifications.
- Inline inlet design
- 340 LPH at 40 PSI
- Turbine mechanism
- Check fitment guide
- Not universal
View all product features
- SUPERIOR HIGH-FLOW OUTPUT: High-performance in-tank fuel pump delivers over 340 LPH at 40 PSI, supporting demanding EFI and carbureted fuel system setups
- APPLICATION-SPECIFIC FITMENT: Compact OEM-style 39mm pump body designed for select in-tank hanger assemblies; reference the Aeromotive application catalog to confirm proper vehicle compatibility
- SUPPORTS HIGH-OUTPUT ENGINES: 12V electric fuel pump engineered to deliver increased fuel volume for naturally aspirated, turbocharged, and supercharged engines with consistent performance across a wide pressure range
- DURABLE TURBINE DESIGN: Features a turbine pump mechanism for reliable operation in pulse-modulated systems; electric 12V fuel pump compatible with gas and E85 fuels; designed for in-tank use only
- INSTALLATION KIT INCLUDED: Complete fuel pump kit includes universal filter sock, wiring pigtail, rubber hose, clamps, and grommet for streamlined installation
AEM 50-1000 High Flow In-Tank Fuel Pump – Gasoline
The AEM 50-1000 is a high-flow in-tank pump designed for high-output naturally aspirated and forced induction EFI vehicles running gasoline. It’s tested to flow 340 LPH at 40 PSI and features a 39mm diameter that fits most applications. The offset inlet design eases installation, and each pump is individually tested for quality assurance.
This kit includes the fuel pump, rubber sleeve, end caps, pre-filter, hose, clamps, and a flying lead, so you have everything needed for installation. Note that pump life may be diminished when used with E85 fuel, so it’s best suited for gasoline-only builds. If you’re sticking with gasoline and want a complete drop-in solution, this pump offers great value and straightforward installation.
- 340 LPH at 40 PSI
- Offset inlet eases install
- Complete kit included
- Not for E85
- No ethanol rating
View all product features
- Designed for high output naturally aspirated and forced induction EFI vehicles and tested to flow 340 lph at 40 PSI
- 39 millimeter diameter fits most applications; Offset inlet design eases installation and each pump individually tested. Min Voltage Input – 6 volts. Max Voltage Input – 18 volts
- For gasoline vehicles (pump life may be diminished when used with E85 fuel); kit includes fuel pump, rubber sleeve and end caps, pre filter, hose, clamps and flying lead
- Power rating given at 43 PSI, 13.5 Volt at the pump with a BSFC of .5, flow capability for horsepower support is ultimately dependent on fuel hose diameter and system electrical voltage and amperage capabilities
- In-Tank design
- Fit type: Universal Fit
Buyer’s Guide: What to Consider
Choosing the right 340 LPH fuel pump ensures your engine gets the fuel it needs. Focus on fitment, fuel compatibility, and inlet style to match your setup.
- Fitment & Size: Measure your hanger assembly or check the pump's diameter (39mm is common) to ensure a drop-in fit without modifications.
- Fuel Compatibility: If you plan to use E85 or methanol, choose a pump explicitly rated for ethanol fuels to avoid premature wear or failure.
- Inlet Style: Pumps come with different inlet orientations (center, offset, inline, GM style). Pick one that matches your fuel system layout for easier installation.
- Pump Design: A turbine-style pump runs quieter and lasts longer in in-tank applications, especially with pulse-width modulation (PWM) controllers.
- Flow Rate & Pressure: Look for pumps that deliver 340 LPH at 40 PSI to support high-horsepower naturally aspirated or forced induction engines reliably.
Conclusion
Selecting the right 340 LPH fuel pump comes down to your specific fuel system needs. Aeromotive offers multiple inlet options for precise fitment, while AEM provides excellent E85 compatibility and complete kits.
For most builds, the AEM 50-1215 is a versatile choice if you run ethanol fuels, while the Aeromotive 11540 is ideal for a simple center-inlet setup. Always verify your hanger assembly before purchasing.