

AEM 340LPH In Tank Fuel Pump Kit - Ethanol Compatible (AEM 50-1200)
AEM50-1200
Pairs well with
AEM 340LPH In Tank Fuel Pump Kit - Ethanol Compatible (AEM 50-1200)
Upgrade your fuel system with the AEM 340LPH High Flow In-Tank Fuel Pump Kit, part number 50-1200. Designed for high-performance naturally aspirated and forced induction applications, this compact fuel pump delivers increased fuel flow for vehicles requiring more fuel capacity than the factory pump can provide.
The AEM 50-1200 is compatible with gasoline and ethanol-based fuels, making it a versatile option for performance builds running conventional gasoline or ethanol blends. Its compact in-tank design is similar in physical size to many OEM fuel pumps, allowing it to work with a wide range of properly sized fuel pump assemblies.
Fuel system requirements vary significantly based on horsepower, boost pressure, fuel type, base fuel pressure, injector size, and other modifications. Always verify that the 340LPH flow capacity and physical dimensions are appropriate for your specific vehicle and performance goals before ordering.
Key Features
- 340 LPH high-flow in-tank fuel pump
- Designed for high-performance fuel systems
- Compatible with gasoline and ethanol-based fuels
- Suitable for naturally aspirated and forced induction builds
- Compact design similar in size to many OEM fuel pumps
- Supplied electrical connector included
- AEM part number 50-1200
Important Electrical Installation Note
Before powering the fuel pump, verify the polarity of the factory electrical connector inside the fuel tank. If the vehicle's connector polarity does not match the AEM pump, the connector must be properly re-pinned, or the supplied AEM electrical plug must be used.
Incorrect polarity can cause improper pump operation. Always verify the electrical connections before completing installation.
Fuel Pump Sizing & Fitment
Although this AEM High Flow Fuel Pump is physically similar in size to many OEM fuel pumps, that does not guarantee compatibility with every vehicle or fuel system.
AEM recommends verifying fuel pump sizing and application requirements before purchasing. Vehicle application guides should be treated as a reference only. Your required fuel flow should be determined based on the engine's power level, fuel type, fuel pressure, and complete fuel system configuration.
AEM does not recommend modifying the fuel tank to accommodate a High Flow Fuel Pump and cannot guarantee pump performance or operation if the fuel tank is modified for installation.
Installation Recommendations
- Confirm fuel pump dimensions before installation
- Verify required fuel flow for your horsepower and fuel type
- Verify electrical connector polarity before powering the pump
- Re-pin the factory connector or use the supplied connector when required
- Do not modify the fuel tank to force pump fitment
- Professional installation is recommended for modified fuel systems
Technical Resources
AEM 50-1200 Installation Instructions
Why Buy AEM from JD Customs USA?
JD Customs USA is a trusted source for performance fuel system components, giving enthusiasts access to genuine AEM fuel pumps and supporting components for street, track, and high horsepower builds.
Selecting the correct fuel pump is critical to building a properly functioning fuel system. JD Customs USA provides clear product information and knowledgeable enthusiast support to help customers understand pump sizing, fuel compatibility, and installation requirements before ordering.
- Genuine AEM performance products
- Detailed fuel pump specifications and installation information
- Support for gasoline and ethanol-fueled performance builds
- Knowledgeable support for modified vehicles
- Secure ordering from an established performance parts retailer


