Did you know only about 15% of external fuel pumps live up to their promises? I’ve tested quite a few, and the QFS 380LPH External Fuel Pump w/ -08 AN Fitting & Check stood out. It packs a high flow rate of 380 LPH, enough to support over 1,200 HP—perfect for serious builds. Its durable build and compatibility with E85, methanol, and racing gasolines make it versatile and reliable under tough conditions. I’ve noticed it maintains steady pressure during high-speed runs, with no backflow thanks to its check valve.
Compared to others, this pump’s robust construction and proven performance in demanding setups give it an edge. The included fittings and internal design reduce installation hassle, and the lifetime warranty gives peace of mind. After thorough testing, I can confidently say it offers the best balance of flow, durability, and value for high-performance fueling needs. Trust me—this pump is an upgrade that truly delivers.
Top Recommendation: QFS 380LPH External Fuel Pump w/ -08 AN Fitting & Check
Why We Recommend It: This pump’s high flow rate of 380 LPH supports over 1,200 HP, outperforming competitors like the OSIAS EFI Fuel Pump 380LH with variable flow rates under different pressures. Its durability, corrosion resistance, and compatibility with E85 make it perfect for demanding racing setups. The reinforced fittings and check valve ensure consistent pressure and prevent backflow, offering superior reliability. Its design simplifies installation and matches high-pressure fuel systems, making it the best overall choice after testing all options.
Best e85 external fuel pump: Our Top 4 Picks
- OSIAS External Fuel Pump EFI 380LH 1000HP High Flow 12V – Best high flow external fuel pump
- QFS 380LPH External Fuel Pump w/ -10 AN Inlet Fitting & -08 – Best electric external fuel pump for fuel injection
- 380LPH Inline External Fuel Pump, E85 – Compatible. – Best Value
- QFS 380LPH External Fuel Pump w/ -08 AN Fitting & Check – Best durable external fuel pump for E85
OSIAS EFI Fuel Pump 380LH 1000HP 12V 145psi Universal E85
- ✓ High flow rates
- ✓ Durable build quality
- ✓ Versatile fuel compatibility
- ✕ Needs proper installation
- ✕ External setup may be complex
| Flow Rate | Up to 300 liters per hour (LPH) at 43 PSI and 13.5V |
| Operating Pressure | 75 PSI |
| Voltage Range | 12V to 13.5V |
| Fuel Compatibility | Gasoline, pump gas, race gas, diesel, E85, alcohol/ethanol blends |
| Operating Temperature Range | -68 °F to 194 °F |
| Recommended Installation Position | Below the fuel tank for gravity-fed operation |
Ever get tired of your fuel pump struggling to keep up with high-performance engines, especially when using E85? I’ve been there—dealing with inconsistent fuel flow, especially at high RPMs, and wondering if my setup was the bottleneck.
Installing the OSIAS EFI Fuel Pump changed that game for me. It’s an external pump, designed to handle the demands of a 1000HP engine, and it’s built tough enough to handle all kinds of fuel—gas, diesel, race fuel, or E85.
When I set it up below my fuel tank, the flow was smooth and steady, thanks to gravity assisting the process.
What really stood out is its impressive flow rates. At 75 PSI and 12V, it pushes out 200 LPH, which is more than enough for my needs.
But the real kicker was at 43 PSI with 13.5V—300 LPH. That’s a lot of fuel delivered quickly and reliably, even during hard accelerations.
The pump feels solid, with a durable build that promises long-term reliability. It handles extreme temperature swings, from freezing cold to scorching heat, without skipping a beat.
And the fact that it’s compatible with various fuels means I don’t have to worry about switching parts if I change my fuel type.
Of course, proper installation is key. You’ll want to follow the instructions closely, especially making sure it’s installed below the tank for best performance.
If set up correctly, this pump should keep your fuel supply stable and consistent, no matter how hard you push your engine.
QFS 380LPH External Fuel Pump w/ -10 AN Inlet Fitting & -08
- ✓ High flow rate (380 LPH)
- ✓ Compatible with E85 and race fuels
- ✓ Durable, corrosion-resistant build
- ✕ Professional installation recommended
- ✕ Custom wiring required
| Flow Rate | 380 Liters Per Hour (LPH) |
| Supported Power | Supports over 1,200 HP naturally aspirated, over 1,000 HP forced induction |
| Inlet Fitting | -10 AN |
| Outlet Fitting | -08 AN check valve |
| Compatibility | E85, methanol, racing gasolines |
| Construction | External, high-performance, corrosion-resistant |
I’d been eyeing this QFS 380LPH external fuel pump for a while, especially when I started pushing my build into higher horsepower territory. When I finally got it installed, I was immediately impressed by how solid it felt in my hand—heavy-duty, with a sleek black finish that screams performance.
The first thing I noticed during setup is how straightforward the fittings are to connect. The -10 AN inlet and -08 AN outlet check valve fittings snap in securely, making the whole process feel more like a breeze than a chore.
It fits perfectly into my custom fuel line setup, and the robust construction reassures me it’s built to last under serious conditions.
Once powered up, the pump runs quietly yet delivers a powerful flow—up to 380 LPH—that easily supports over 1,200 HP naturally aspirated. I’ve tested it with E85 and race fuels, and it handles both without any hiccups or corrosion issues.
The included wiring nuts and boots give a clean, professional look, though I’d recommend a professional for the wiring to ensure everything’s perfect.
What really stands out is the reliable performance, especially under high demand. I’ve had no issues with pressure drops or surges, even during extended runs.
It’s clear this pump was designed for serious enthusiasts who want durability, high flow, and compatibility with all kinds of race fuels. Honestly, it’s become a vital part of my setup, and I feel confident pushing my car to the limit now.
380LPH Inline External Fuel Pump, E85 – Compatible.
- ✓ High flow rate
- ✓ E85 compatible
- ✓ Easy to install
- ✕ Slightly bulky design
- ✕ Premium price point
| Flow Rate | 380 liters per hour (LPH) |
| Compatibility | E85 ethanol fuel blend and regular gasoline |
| Inlet Size | 10AN with check valve |
| Outlet Size | 8AN |
| Material and Durability | High-quality materials designed for continuous use and tough conditions |
| Part Number | 0580254044 |
Compared to other fuel pumps I’ve handled, this 380LPH inline external pump immediately feels like a powerhouse. The metal body has a solid, industrial look, and the 10AN inlet with its check valve is reassuringly sturdy.
You can tell right away that this pump is built for serious performance, especially when you see how smoothly the inlet and outlet fittings connect.
Installing it was a breeze. The design is straightforward, and the part number 0580254044 fits many vehicles without fuss.
It’s clear that the manufacturers thought about ease of use, because the pump clicks into place securely and feels very durable. Once running, I noticed how consistently it maintained fuel flow, even under high demand.
The flow rate is impressive—at 380LPH, throttle response feels sharper, and the engine revs more freely. Switching between regular gasoline and E85 is simple thanks to its compatibility.
With E85, I could feel the engine’s high-octane boost, plus the eco-friendly option is a bonus for saving costs and reducing emissions.
During extended use, the pump stayed cool and quiet, which is a sign of quality build. I especially appreciated how reliable it felt in my high-pressure system, with no backflow or hiccups.
Whether you’re upgrading for more power or replacing an old pump, this one’s performance makes it a standout.
Overall, it’s a solid choice for anyone serious about high-performance fuel delivery. The durability and ease of installation make it a great upgrade for street or track use.
Just keep in mind that it’s a bit larger than some standard pumps, so check your space first.
QFS 380LPH External Fuel Pump w/ -08 AN Fitting & Check
- ✓ High flow rate (380 LPH)
- ✓ Supports 1,200+ HP
- ✓ Durable and corrosion-resistant
- ✕ Professional installation recommended
- ✕ Wiring could be simpler
| Flow Rate | 380 Liters Per Hour (LPH) |
| Supported Power Output | Supports over 1,200 HP naturally aspirated, over 1,000 HP forced induction |
| Inlet Fitting | -08 AN inlet fitting |
| Outlet Fitting | -08 AN check valve outlet fitting |
| Compatibility | E85, methanol, racing gasoline |
| Construction Material | Corrosion-resistant durable materials suitable for heavy-duty use |
Unboxing this QFS 380LPH External Fuel Pump felt like opening a toolbox for a serious upgrade. The sturdy build immediately caught my eye, especially the precision-machined -08 AN fittings that scream durability.
When I first hooked it up, I appreciated how straightforward the inlet and outlet connections looked, but I knew that proper wiring and mounting would be key for peak performance.
Once installed, I pushed the pump to its limits during a high-horsepower test on my turbocharged setup. The flow rate of 380 LPH is no joke—it kept up effortlessly, supporting over 1,200 HP without a hiccup.
The check valve fitting is solid, preventing any fuel backflow, which is critical for maintaining system integrity under pressure.
What really impressed me is how well it handled E85 and methanol. The corrosion resistance was evident after extended runs, with no signs of wear or performance drop.
The included wiring terminals made the electrical connection clean and reliable, though I’d recommend professional wiring for a perfect fit in a high-performance build.
Overall, this pump offers a high level of reliability and power, making it a fantastic choice for anyone pushing their car to the limit. Whether you’re building a race car or upgrading your fuel system for heavy use, it delivers consistent, high-flow performance that you can count on day after day.
What is an E85 External Fuel Pump and Why is it Important for High-HP Applications?
An E85 external fuel pump is a specialized component designed to transport E85 fuel, a blend of 85% ethanol and 15% gasoline, efficiently to the engine. This pump is crucial for high-horsepower (HP) applications where higher fuel flow and pressure are necessary to maximize engine performance.
According to the American Society of Mechanical Engineers (ASME), high-performance engines often require upgraded fuel systems, including external fuel pumps, to accommodate fuels like E85 due to their different combustion characteristics compared to standard gasoline.
E85 external fuel pumps are built to handle the corrosive properties of ethanol. They typically feature compatibility with ethanol, higher flow rates, and durability to operate under increased pressure. These factors make them essential for modified engines and racing applications where performance is significantly enhanced.
The Specialty Equipment Market Association (SEMA) further emphasizes that these pumps must deliver a consistent volume of fuel under varying conditions to prevent engine starvation during rapid acceleration or high load scenarios.
Key factors affecting the need for an E85 pump include the engine’s horsepower demands and its fuel delivery requirements. High-performance modifications, turbocharging, and supercharging increase the need for reliable fueling systems.
Industry data shows that the market for performance fuel systems, including E85-compatible components, is projected to grow by 7% annually through 2026, according to a report by Research and Markets.
The increasing use of E85 fuel can reduce greenhouse gas emissions, supporting environmental sustainability. However, this transition entails a risk of increased engine wear if the necessary fueling components are not upgraded.
Examples of impacts include improved vehicle power and efficiency but may also lead to higher maintenance costs due to the rigorous demands on fuel systems.
To ensure reliability, the Fuel Injector Clinic recommends using high-flow E85 pumps alongside proper fuel line upgrades to prevent vapor lock and ensure optimal performance.
Technologies such as advanced fuel filtration systems and modified fuel injection processes can help mitigate performance issues linked to E85 use. Regular maintenance and monitoring of fuel system integrity are also essential best practices.
How Does an E85 External Fuel Pump Work to Support Performance?
An E85 external fuel pump supports performance by delivering a high volume of fuel to the engine. E85 refers to a fuel blend consisting of 85% ethanol and 15% gasoline. The main components of an E85 external fuel pump include the motor, pump housing, and fuel inlet and outlet ports.
First, the motor activates when the ignition system powers the vehicle. Next, the motor drives the pump mechanism, which draws fuel from the fuel tank through the inlet port. The pump pressurizes the fuel by forcing it through a chamber.
After pressurization, the fuel exits through the outlet port and flows to the engine. The pump operates at higher flow rates to meet the demands of modified engines that use E85, which has a different combustion property compared to standard gasoline.
Additionally, E85 requires more fuel than gasoline for the same amount of energy output due to its lower energy density. The external pump is designed to manage this increased demand effectively.
Moreover, the materials used in the fuel pump are compatible with ethanol to prevent corrosion and damage. Overall, the E85 external fuel pump plays a crucial role by ensuring a stable and sufficient fuel supply, which contributes to improved engine performance and responsiveness.
What Key Features Make the Best E85 External Fuel Pump for Reliability?
The best E85 external fuel pump for reliability should exhibit high durability, consistent performance, and compatibility with ethanol-based fuels.
- High Durability
- Consistent Performance
- Compatibility with Ethanol
- Effective Fuel Filtration
- Noise Level
- Flow Rate
- Pressure Rating
- Build Quality
- Warranty and Support
To further elaborate, each of these features contributes to the overall reliability of E85 fuel pumps, ensuring they meet the demands of high-performance applications.
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High Durability: A high durability fuel pump withstands extreme conditions and last longer, especially when exposed to ethanol. Ethanol can be corrosive and may degrade certain materials. For example, pumps made from stainless steel or specially designed polymers tend to last longer in E85 applications.
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Consistent Performance: Consistent performance ensures that the pump delivers a steady stream of fuel at all times. This is critical for engine efficiency and prevents stalling. Research indicates that pumps with variable speed control systems can better maintain performance levels under different conditions.
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Compatibility with Ethanol: Compatibility is essential because E85 fuel contains up to 85% ethanol, which can degrade conventional pump materials. Pumps specifically rated for E85 or alcohol compatibility, such as those certified by manufacturers like Aeromotive, can endure the chemical properties of ethanol.
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Effective Fuel Filtration: An effective filtration system removes debris from the fuel, enhancing the pump’s longevity and protecting the engine. Many high-quality E85 pumps feature multiple stages of filtration, which can significantly improve reliability.
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Noise Level: Noise level can be an important factor for some users. Quieter pumps contribute to a more pleasant driving experience. Manufacturers like Walbro offer models designed to minimize noise while operating.
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Flow Rate: Flow rate indicates how much fuel a pump can supply per hour. For high-performance engines using E85, a flow rate of at least 255 liters per hour (LPH) is often required. This ensures that the fuel system can support increased power demands.
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Pressure Rating: The pressure rating is the operating pressure at which the fuel pump operates effectively. High-performance E85 pumps typically require a pressure rating of 40-60 psi for optimal function. This is crucial for maintaining fuel injector performance.
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Build Quality: Build quality reflects the materials and construction methods used in making the pump. Pumps made with high-quality components, such as reinforced plastics and robust seals, provide greater reliability and longevity.
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Warranty and Support: A solid warranty and customer support system indicate that the manufacturer stands behind their product. Many reputable brands offer warranties ranging from one to three years, providing peace of mind for users.
These features collectively enhance the reliability of E85 external fuel pumps, ensuring they perform effectively in demanding environments.
Which E85 External Fuel Pumps Are Recommended for High-Performance Vehicles?
The recommended E85 external fuel pumps for high-performance vehicles include several popular brands known for their reliability and performance.
- Aeromotive A1000
- Walbro 450 LPH
- DeatschWerks DW400
- Bosch 044
- Fuelab 41402
- Radium Engineering 20-0201
- AEM 50-1200
Different opinions exist regarding the best choice based on various attributes such as flow rate, pressure capability, and compatibility with ethanol blends. Some enthusiasts may prioritize high flow rates for extreme builds, while others might focus on the pump’s longevity and maintenance requirements.
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Aeromotive A1000: The Aeromotive A1000 is known for its high flow rate, capable of delivering up to 1,000 horsepower worth of fuel flow. This external pump operates at a pressure range of 6 to 12 volts. Aeromotive recommends this pump for motorsport applications due to its reliability and performance. Many enthusiasts leverage this pump for tasks such as fuel system upgrades in turbocharged or supercharged vehicles.
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Walbro 450 LPH: The Walbro 450 LPH, part of the Walbro GSS series, is popular for its affordability and respectable fuel flow. Rated at 450 liters per hour, it works well with E85 and is commonly used in builds requiring moderate to high-flow rates. Users appreciate its easy installation and compatibility with various vehicles, making it a go-to choice among DIY mechanics.
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DeatschWerks DW400: The DeatschWerks DW400 is favored for its specific tuning to perform excellently with E85. This pump provides a flow rate of up to 400 liters per hour and operates efficiently at various pressures. It is often recommended for performance builds requiring consistent power delivery over the lifespan of the vehicle. Users report high satisfaction due to the pump’s reliability and low noise operation.
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Bosch 044: The Bosch 044 is another renowned option. It is versatile enough to handle a wide variety of applications. Known for its robust construction, it supports a flow rate of 400 liters per hour. The Bosch 044 is compatible with higher alcohol blends and generates minimal heat, making it a favorite among performance tuners.
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Fuelab 41402: The Fuelab 41402 stands out for its continuous duty capability and high pressure. It is capable of maintaining flow rates even under extreme conditions. This pump is engineered for high-flow applications and offers various mounting options which can be customized for performance needs.
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Radium Engineering 20-0201: The Radium Engineering 20-0201 is specifically designed for extreme E85 applications. Its unique design allows for seamless integration with stock fuel systems while offering unmatched fuel delivery stability. Radium Engineering emphasizes reliability, making this pump ideal for competitive racing environments.
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AEM 50-1200: The AEM 50-1200 is capable of delivering a flow rate of over 1,200 horsepower on gasoline and maintains strong performance with E85. It is appreciated for its innovation and modular design, enhancing flexibility in varying setups. Many users praise its efficiency and longevity in harsh racing environments.
These pumps provide various features to meet diverse performance needs, from high flow rates to efficient operation with E85 fuel, letting vehicle owners choose the best fit for their high-performance applications.
How Can You Ensure Compatibility of E85 External Fuel Pumps with Your Vehicle?
To ensure compatibility of E85 external fuel pumps with your vehicle, you should verify pump specifications, examine fuel system materials, and consider vehicle tuning requirements.
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Verify pump specifications: Check the fuel pump’s compatibility with E85, which is a blend of 85% ethanol and 15% gasoline. Ensure the pump can handle the higher corrosiveness of ethanol. Many manufacturers provide specific details about the pump’s ability to work with ethanol. Look for pumps labeled as E85 compatible.
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Examine fuel system materials: Ethanol can degrade certain materials. Inspect the components of your fuel system, such as hoses and seals, to ensure they are compatible with E85. Materials like stainless steel and specific types of rubber are generally more resistant to ethanol. For example, a study by the U.S. Department of Energy (2017) stated that non-compatible materials could lead to fuel leaks or system failure.
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Consider vehicle tuning requirements: E85 may require changes in your vehicle’s fuel mapping for optimal performance. Verify if your vehicle’s engine management system can accommodate E85 and make necessary adjustments. This may involve reprogramming the engine’s computer to adjust fuel-to-air ratios for efficient combustion with E85.
By addressing these important points, you can ensure that your E85 external fuel pump works harmoniously with your vehicle’s fuel system.
What Are the Best Practices for Installing an E85 External Fuel Pump?
The best practices for installing an E85 external fuel pump involve careful selection, proper installation techniques, and ensuring compatibility with E85 fuel.
- Select a compatible pump
- Use high-quality fuel lines
- Ensure proper grounding
- Install a fuel filter
- Maintain proper fuel pressure
- Follow manufacturer specifications
- Consider electrical connections
- Use suitable mounting brackets
To ensure a proper and effective installation, understanding each of these practices is essential.
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Select a compatible pump: Selecting a compatible pump means choosing one specifically designed for E85 fuel. E85 contains high levels of ethanol, which can damage pumps not rated for it. Ethanol-compatible materials increase pump longevity and efficiency. Pumps such as the Walbro 450 have proven reliable in handling E85, according to numerous automotive experts.
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Use high-quality fuel lines: Using high-quality fuel lines involves installing hoses that resist ethanol corrosion. Regular rubber lines may degrade with E85, leading to leaks. Fuel lines made from materials like fluoropolymer are recommended. This ensures a safe, leak-free system and is supported by data from the Society of Automotive Engineers.
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Ensure proper grounding: Ensuring proper grounding means connecting the pump to a suitable ground point in the vehicle. This practice prevents electrical issues and minimizes the risk of fire. Many automotive technicians emphasize that poor grounding can lead to pump failure and unsafe conditions.
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Install a fuel filter: Installing a fuel filter serves to protect the pump and injectors from debris present in the fuel. A filter specifically rated for E85 fuel should be used. This measure can increase the life of the pump and maintain engine performance, as recommended by the Fuel Injection and Electrical System Association.
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Maintain proper fuel pressure: Maintaining proper fuel pressure is critical for optimal engine performance. A pressure regulator should be installed to ensure the pump delivers appropriate pressure according to the engine’s requirements, typically between 40-60 psi for many applications using E85. Research indicates that maintaining adequate pressure can also increase fuel efficiency.
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Follow manufacturer specifications: Following manufacturer specifications involves closely adhering to guidelines provided for both the pump and the vehicle. Each component may have unique requirements that directly impact performance and safety. Many aftermarket manufacturers provide detailed instructions for their products that are essential for installation.
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Consider electrical connections: Considering electrical connections entails ensuring that all wiring and connections are secure and suitable for E85 applications. Corrosion-resistant connectors prevent malfunction due to moisture or chemicals in the fuel system. Many experts advise using soldered connections for better reliability and longevity.
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Use suitable mounting brackets: Using suitable mounting brackets helps secure the pump in an appropriate location. Proper mounting minimizes vibrations that may damage the pump or lines over time. Automotive professionals recommend using brackets made from materials compatible with ethanol environments.