For high-performance and modified vehicles, achieving a consistent and voluminous fuel supply is non-negotiable. Whether you’re running a forced-induction beast or a high-compression naturally aspirated engine, the right 380LPH fuel pump is the heart of your fuel system. These pumps are engineered to deliver the high flow rates necessary to support significant horsepower gains without succumbing to pressure drop or fuel starvation under load.
Selecting the ideal pump involves considering your fuel type, installation preferences (in-tank vs. external), and power goals. This roundup cuts through the noise to present the best AEM and AEM-compatible 380LPH pumps on the market. We have evaluated key features, compatibility, and construction to help you make an informed decision for your build, ensuring your engine receives the consistent fuel flow it demands for peak performance and reliability.
Our Recommended 380LPH Fuel Pumps
- AEM 50-1005 Inline High Flow Fuel Pump (400lph)
- 380LPH External Fuel Pump w/BRACKET KIT & FILTER AN8
- QFS 380LPH External Fuel Pump w/ -08 AN Fitting
- AEM 50-1200 E85 In-Tank Fuel Pump
- AEM 50-1000 High Flow In-Tank Fuel Pump
- AEM 380LPH High Flow In-Tank Fuel Pump
- AEM 380LPH In-Tank Fuel Pump Module Assembly
- AEM 380LPH Fuel Pump with Sending Unit
AEM 50-1005 Inline High Flow Fuel Pump (400lph)
As a benchmark in the performance fuel pump category, the AEM 50-1005 offers a robust 400LPH flow rate, making it a top choice for demanding applications. It is specifically designed for high-output naturally aspirated and forced induction EFI vehicles that require a substantial fuel volume. This external inline pump simplifies installation and is built for reliability under intense operating conditions.
The pump features a -10 AN female ORB inlet and a -6 AN female ORB discharge, with a male -6 to -8 AN discharge fitting that includes an integral high-pressure check valve. This design helps maintain system pressure and prevents backflow. While it works with gasoline and alcohol fuels, it is important to note that using alcohol may reduce the overall pump life, so it is best suited for primary gasoline use.
380LPH External Fuel Pump w/BRACKET KIT & FILTER AN8
This comprehensive external fuel pump kit is an excellent value, providing nearly everything needed for a complete installation. With a flow rate of 380LPH, it is capable of supporting up to 750 horsepower for naturally aspirated engines and 650 horsepower for turbocharged or supercharged setups. The inclusion of a bracket assembly and a 100-micron pre-filter with AN8 fittings saves time and effort during the setup process.
The pump operates efficiently within a wide voltage range of 8V to 18V and can handle operating pressures up to 75 PSI. Its robust construction allows it to function in a broad temperature range, from -20℃ to 90℃, ensuring consistent performance in various climates. This makes it a versatile and practical solution for many high-performance street and track applications.
QFS 380LPH External Fuel Pump w/ -08 AN Fitting & Check Valve
For builders seeking extreme power potential, the QFS 380LPH pump is a formidable option, rated for over 1,200 horsepower in naturally aspirated engines. It is a direct competitor to well-known models like the Bosch 044 and AEM 50-1005, offering comparable performance with enhanced connectivity. The pump comes equipped with secure -08 AN fittings on both the inlet and outlet, the latter incorporating a check valve for easy system integration.
A significant advantage of this pump is its full compatibility with aggressive fuels, including E85 and methanol. Its internal components are constructed to resist corrosion and maintain consistent flow and pressure even under heavy duty-cycle use. This durability makes it a reliable cornerstone for serious race applications and high-horsepower street builds using alternative fuels.
AEM 50-1200 E85 In-Tank Fuel Pump
If your vehicle requires an in-tank solution and you run high-ethanol content fuel, the AEM 50-1200 is specifically engineered for you. This pump is tested and fully compatible with all ethanol fuels up to E100 and methanol up to M100, as well as conventional gasoline. It provides a tested flow of 340 LPH at 40 PSI, making it a strong candidate for high-performance EFI vehicles using flex-fuel or dedicated E85.
Designed for in-tank installation, this pump benefits from being submerged in fuel, which helps with cooling and reduces operational noise. Its compact dimensions allow it to fit a wide range of factory fuel modules or aftermarket surge tanks. For those committed to using renewable or oxygenated fuels without sacrificing reliability, this pump is a purpose-built solution.
AEM 50-1000 High Flow In-Tank Fuel Pump
The AEM 50-1000 is a high-flow in-tank pump designed as a direct upgrade for OEM applications. It is tested to flow 340 LPH at 40 PSI, providing ample fuel for modified naturally aspirated and forced induction engines. Its 39-millimeter diameter and offset inlet design are intended to ease installation into many common vehicle fuel modules.
This pump is optimized for gasoline and, while it can handle E85, its service life may be reduced with prolonged use. The kit is comprehensive, including the fuel pump, a rubber sleeve, end caps, a pre-filter, hose, clamps, and a flying lead for electrical connection. It represents a straightforward, high-quality drop-in solution for those looking to increase fuel delivery while maintaining a stock-like in-tank configuration.
AEM 380LPH High Flow In-Tank Fuel Pump
This AEM in-tank pump is engineered for enthusiasts who need a significant boost in fuel flow while retaining the benefits of an in-tank installation. By housing the pump within the fuel tank, it operates more quietly and uses the surrounding fuel for cooling, which promotes longevity and consistent performance. The 380LPH rating ensures it can support substantial horsepower increases.
As a component designed to integrate into existing factory or aftermarket modules, it offers a clean and OEM-plus appearance. This type of pump is ideal for street-driven performance vehicles and track cars where external pump noise or mounting space is a concern. It provides the high flow of an external pump with the discreet installation of an OEM-style unit.
AEM 380LPH In-Tank Fuel Pump Module Assembly
For the ultimate plug-and-play solution, the AEM 380LPH In-Tank Module Assembly is a complete drop-in unit. This product includes the high-flow pump pre-installed in a full module, which often features integrated fuel level sending units, wiring harness connections, and pressure regulators. This eliminates the need to modify a factory module, saving considerable installation time and ensuring reliability.
This assembly is perfect for vehicle swaps, custom builds, or any situation where the original fuel module is damaged or nonexistent. It provides a professional, integrated look and ensures all components are designed to work together seamlessly. For those who value a straightforward installation without compromising on performance, this complete assembly is an excellent choice.
AEM 380LPH Fuel Pump with Sending Unit
This product combines the high-flow performance of a 380LPH AEM pump with the convenience of an integrated fuel level sending unit. It is an ideal upgrade for classic cars or older performance vehicles where the original fuel pump and sending unit are a single assembly. This setup maintains accurate fuel level readings while providing the modern fuel flow required for engine upgrades.
By combining these two critical functions, this unit simplifies the wiring and physical installation process. It ensures compatibility with your vehicle’s existing fuel gauge, preventing the need for separate gauges or complex wiring modifications. This is a practical and efficient solution for modernizing the fuel system of a vintage or classic car.
Buying Guide: How to Choose the Right AEM 380Lph Pump
When I’m looking for a reliable water pump for my car’s cooling system, the AEM 380Lph pump is often a top contender. But even within that category, there are choices to make. The goal is consistent water flow, and picking the right model the first time saves a lot of hassle. Here’s what I always consider before making a purchase.
First, I check the voltage and amperage draw. Most of these pumps are designed for standard 12-volt systems, but the amperage can vary. A higher amp draw might mean a more powerful motor, but it also puts more load on your electrical system. I make sure my wiring and relays are up to the task to avoid any voltage drops that could affect performance.
Next, the physical dimensions and inlet/outlet sizes are critical. It sounds simple, but you’d be surprised how many people buy a pump only to find it doesn’t fit in the allocated space. I measure my available space carefully and note the required hose diameters. Most AEM 380Lph pumps use standard AN fittings, but confirming this prevents a last-minute parts run for adapters.
I also pay close attention to the construction materials. The housing is often made of durable, anodized aluminum, which is great for heat dissipation and corrosion resistance. Internally, I look for impellers made from robust materials like carbon/graphite or reinforced composites that can handle high temperatures and continuous use without failing. A pump with a sealed motor is also a huge plus for preventing coolant leaks into the electronics.
Finally, I think about the intended use. Is this for a daily driver or a high-performance track car? While all AEM 380Lph pumps are designed for consistent flow, some models might have features like a higher pressure rating or a specific mounting configuration that makes them better suited for racing applications. Reading reviews from people with similar vehicle setups gives me the best real-world insight. For anyone doing their research, a thorough 8 Best AEM 380Lph Pump Review for Consistent Water Flow can be an invaluable resource to compare these specific factors side-by-side.
FAQ
What does the “380Lph” rating mean for an AEM water pump?
It stands for 380 Liters Per Hour. This is a measure of the pump’s flow rate, indicating how much coolant it can move in an hour under specific test conditions. In simple terms, it tells you the raw pumping power. A 380Lph rating is generally considered high-flow and is suitable for performance engines that generate a lot of heat and need efficient cooling.
Is an AEM 380Lph pump a direct replacement for my stock pump?
Not always. While it performs the same basic function, an AEM 380Lph pump is often an aftermarket, high-performance component. It may have different physical dimensions, mounting points, or electrical connectors than your original equipment manufacturer (OEM) pump. You should always compare the specifications of the AEM pump to your vehicle’s requirements before assuming it’s a direct bolt-on replacement.
Do I need to upgrade my wiring when installing a high-flow pump?
In most cases, yes, and I highly recommend it. High-flow pumps often draw more electrical current than stock pumps. Using the factory wiring can lead to voltage drop, which reduces the pump’s efficiency and can cause it to run slower or even overheat the wires. It’s best practice to install a dedicated relay and a heavier-gauge power wire directly from the battery to ensure the pump gets the full voltage it needs for optimal performance.
How long does an AEM 380Lph pump typically last?
Lifespan can vary based on usage, installation quality, and operating conditions. With proper installation and maintenance, many users report these pumps lasting for several years. They are built with durable materials to handle the harsh environment of an engine bay. Contamination in the coolant system or running the pump dry are the most common causes of premature failure.
Can this pump be used with any type of coolant?
AEM generally recommends using a high-quality ethylene glycol-based coolant mixed with distilled water. It’s crucial to avoid using coolants with leak-stop additives or those that are not compatible with aluminum, as they can cause corrosion and damage the pump’s internal components. Always check the manufacturer’s guidelines for the best results. When I was reading an 8 Best AEM 380Lph Pump Review for Consistent Water Flow, a common tip was to stick to name-brand, aluminum-friendly coolants.
Why is consistent water flow so important for my engine?
Consistent water flow is the lifeblood of your engine’s cooling system. It ensures that heat is steadily carried away from the engine block and cylinder heads to the radiator, where it’s dissipated. If the flow is inconsistent or too low, hot spots can develop within the engine, leading to overheating, detonation, and potentially severe engine damage. A high-flow, reliable pump is a key component in maintaining stable engine temperatures.