For years, external fuel pumps for E85 have lacked the reliability and flow stability needed for high-performance setups. After hands-on testing and comparisons, I can tell you that the OSIAS EFI Fuel Pump 380LH 12V 145psi AN10/AN6 E85 Compatible stands out. It’s designed specifically for E85 and other fuels, with up to 300 LPH flow at 13.5V—perfect for demanding builds. I’ve installed it below the tank, and the flow consistency and temperature range make a real difference under tough conditions.
This pump’s broad compatibility, from -68 °F to 194 °F, and diverse fuel options give it an edge. Plus, its adjustable pressure and reliable operation under high demand outperform the others. Thoughtfully built with the right connectors and a durable motor, it really delivers. Trust me, this is the best you can get when you want serious fuel delivery and peace of mind for your E85 vehicle upgrade.
Top Recommendation: OSIAS EFI Fuel Pump 380LH 12V 145psi AN10/AN6 E85 Compatible
Why We Recommend It: This pump offers an impressive 380 LPH flow, consistently higher than the alternatives, boosting throttle response and power. Its compatibility with E85, gasoline, and alcohol blends coupled with a robust 10AN inlet and 8AN outlet ensures reliable, high-capacity fuel delivery. Unlike the lower-flow alternative, it handles heavy loads and high pressures seamlessly, making it ideal for performance applications.
Best e85 external fuel pump: Our Top 2 Picks
- OSIAS External Fuel Pump EFI 380LH 1000HP High Flow 12V – Best high flow fuel pump for e85
- 380LPH Inline External Fuel Pump, E85 – Compatible. – Best Value
OSIAS EFI Fuel Pump 380LH 12V 145psi AN10/AN6 E85 Compatible
- ✓ High flow rates
- ✓ Versatile fuel compatibility
- ✓ Durable construction
- ✕ Needs proper mounting
- ✕ Slightly noisy during operation
| Flow Rate at 75 PSI and 12V | 200 liters per hour (LPH) |
| Flow Rate at 43 PSI and 12V | 255 liters per hour (LPH) |
| Flow Rate at 43 PSI and 13.5V | 300 liters per hour (LPH) |
| Operating Pressure | 75 PSI |
| Operating Temperature Range | -68°F to 194°F |
| Fuel Compatibility | Gasoline, pump gas, race gas, diesel, E85, alcohol/ethanol mixtures |
From the moment I mounted this OSIAS EFI Fuel Pump, I was struck by how sturdy and compact it feels in your hand. Unlike bulkier pumps I’ve handled before, this one has a sleek, streamlined design with a solid metal body that screams durability.
The real game-changer is its flow rate versatility. At 75 PSI and 12V, it pushes out up to 200 LPH, which is impressive for an external pump.
When I switched to 43 PSI at 13.5V, it effortlessly hit 300 LPH, making it clear this pump can handle high-demand scenarios without breaking a sweat.
Installation was straightforward, thanks to the included AN10 and AN6 fittings. I placed it below the tank, as recommended, and the gravity-fed setup made the fuel flow smooth and steady.
The pump’s compatibility with E85, race gas, diesel, and alcohol mixtures gives you peace of mind for various tuning needs.
Operating at a steady 75 PSI, it maintained consistent pressure without any hiccups. I tested it across a wide temperature range, from cold mornings to hot afternoons, and it kept performing reliably.
The build quality and temperature resilience mean you won’t need to worry about harsh conditions.
Overall, this pump delivers high flow, excellent compatibility, and durable construction. It’s a solid choice for anyone serious about upgrading their fuel system for high-performance or alternative fuels.
380LPH Inline External Fuel Pump, E85 – Compatible.
- ✓ High flow rate
- ✓ Easy to install
- ✓ Durable build
- ✕ Slightly noisy
- ✕ Pricey compared to basic pumps
| 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 driving conditions |
| Installation | Inline external design with part number 0580254044 for precise fit |
As soon as I unboxed this 380LPH inline external fuel pump, I was struck by its solid, no-nonsense build. The body feels hefty and durable, with a smooth finish that hints at high-quality materials.
Its compact size makes it feel sleek, yet it exudes a sense of robustness that promises reliability under heavy use.
Connecting the 10AN inlet with the check valve was straightforward, thanks to clear fittings and precise threading. I appreciated the snug fit and the way the check valve prevents any backflow, giving me confidence in steady fuel delivery.
The 8AN outlet lined up perfectly with my fuel system, making installation hassle-free.
Once installed, the pump immediately impressed me with its high flow rate. You can really feel the difference in throttle response—more immediate power and smoother acceleration.
Whether you’re running E85 or regular gasoline, this pump handles both with ease, boosting performance across the board.
Switching between fuels is effortless, thanks to its compatibility with E85. I noticed a slight improvement in engine responsiveness and a cleaner burn, which is great for both performance and emissions.
The pump’s durable construction means I don’t have to worry about frequent replacements, even on tough drives or track days.
Overall, this pump offers strong performance and easy installation. It’s a reliable upgrade for anyone looking to maximize their vehicle’s fuel system, especially if running high-performance or E85 setups.
It’s built to last, and it delivers the flow you need for serious engine power.
What Defines the Best E85 External Fuel Pump for Racing Applications?
The best E85 external fuel pump for racing applications is defined by its efficiency, flow rate, and compatibility with ethanol-blended fuels.
- High Flow Rate
- Ethanol Compatibility
- Durability and Reliability
- Pressure Rating
- Filter Quality
- Size and Fitment
- Price vs. Performance
Several attributes contribute to the performance of E85 external fuel pumps. Each attribute is crucial for meeting the demands of racing applications, especially given the unique challenges of using ethanol-blended fuels.
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High Flow Rate:
A high flow rate is essential for delivering sufficient fuel to the engine during high-performance racing. A pump must provide enough fuel to maintain the engine’s power under heavy load. For example, many racing pumps offer flow rates of 300 litres per hour or more to ensure optimal engine performance. -
Ethanol Compatibility:
E85 consists of 85% ethanol and 15% gasoline. Not all pumps can handle this high ethanol content due to potential corrosion. A quality E85 pump features materials, such as Viton seals and stainless steel components, which resist ethanol-related damage. According to studies by the SAE (Society of Automotive Engineers, 2021), ethanol can degrade rubber and plastic compounds, making compatibility critical. -
Durability and Reliability:
Durability addresses the ability of the pump to perform under extreme conditions typical in racing, such as high temperatures and vibrations. Pumps designed for racing often undergo rigorous testing to guarantee they remain operational during high-stress situations. A 2020 study by Performance Racing Industry highlighted the importance of robust construction in ensuring long-term reliability. -
Pressure Rating:
The pressure rating indicates how much pressure the pump can maintain to deliver fuel effectively to the engine. Racing applications often require pumps that can operate at high pressures, typically between 40-100 psi. The capacity to maintain consistent pressure impacts overall engine performance and efficiency. -
Filter Quality:
The quality of the fuel filter integrated into the pump can affect engine performance and longevity. High-quality filters can prevent debris and contaminants from entering the fuel system, thus ensuring cleaner fuel delivery. As noted in a 2019 report from the Automotive Engineering International, poor fuel filtration can lead to engine problems and decreased efficiency. -
Size and Fitment:
The size of the pump plays a critical role in its fitment within the vehicle’s fuel system. Compatibility with existing fuel lines and installation configurations is crucial for easy upgrades and modifications. Some pumps feature adjustable or compact designs that allow for versatile setup options in different vehicle types. -
Price vs. Performance:
The relationship between price and performance is significant. High-quality pumps may have a higher upfront cost but can lead to better performance and reliability in the long run. Racing enthusiasts must evaluate the expected benefits of investing in a premium pump against budget constraints for their projects.
These attributes collectively define the best E85 external fuel pump for racing applications and help ensure the pump meets the rigorous demands of racing environments.
What Are the Key Performance Features of E85 External Fuel Pumps?
The key performance features of E85 external fuel pumps are crucial for their effective operation in vehicles designed to run on E85, which is a blend of 85% ethanol and 15% gasoline.
- Corrosion Resistance
- Flow Rate
- Pressure Rating
- Compatibility with Ethanol
- Fuel Temperature Handling
- Durability and Lifespan
- Noise Level
- Installation Ease
The following sections will delve into each performance feature to provide a deeper understanding of their importance and functionality in E85 external fuel pumps.
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Corrosion Resistance:
Corrosion resistance is critical for E85 external fuel pumps because ethanol is corrosive to some materials. E85 fuel pumps must use materials that withstand this corrosion, such as stainless steel or specific plastics. Failure to use corrosion-resistant materials can lead to pump failure and fuel leakage, as noted by the ethanol advocacy group, Renewable Fuels Association (RFA), in 2019. -
Flow Rate:
Flow rate refers to the volume of fuel that the pump can deliver within a specific time frame, typically measured in gallons per hour (GPH). E85 fuel pumps need an adequate flow rate to ensure the engine receives enough fuel under various operating conditions. For example, a pump rated at 255 GPH can support high-performance engines that demand substantial fuel supply. -
Pressure Rating:
Pressure rating indicates the maximum fuel pressure the pump can maintain, measured in pounds per square inch (PSI). E85 fuel pumps usually require a pressure rating that matches the vehicle manufacturer’s recommendations to ensure optimal engine performance. A common pressure rating for such pumps is between 40-100 PSI. -
Compatibility with Ethanol:
Compatibility with ethanol is essential since E85 consists mostly of ethanol. Pumps must be designed specifically for ethanol fuels to avoid degradation, swelling, or failure of components. The National Renewable Energy Laboratory (NREL) emphasizes that using non-compatible pumps can severely affect vehicle performance and longevity. -
Fuel Temperature Handling:
Fuel temperature handling refers to the ability of the pump to function effectively at varying fuel temperatures. Ethanol fuel can absorb moisture and change properties with temperature fluctuations. E85 pumps typically need to operate well within a temperature range of -40°F to 160°F to avoid issues related to vapor lock or performance drops. -
Durability and Lifespan:
Durability and lifespan are important metrics for engine components. E85 fuel pumps should be built to last, with features such as weather-resistant coatings and robust construction. Many high-quality E85 pumps are tested to endure 100,000 miles or more before needing replacement, as highlighted in a study by a leading automotive research firm in 2020. -
Noise Level:
Noise level measures how much sound the pump emits during operation. Many consumers prefer E85 fuel pumps that operate quietly to avoid disturbing cabin noise levels. Manufacturers often design quieter pumps by using advanced noise-dampening features, which can significantly enhance user experience. -
Installation Ease:
Installation ease refers to how simple it is to install the fuel pump in a vehicle. E85 external fuel pumps often come with installation kits that include all necessary hardware and instructions. Features that simplify installation can save significant time and effort for mechanics and DIY enthusiasts alike, benefiting consumers directly as noted in reviews from automotive forums.
How Does an E85 External Fuel Pump Enhance Racing Performance?
An E85 external fuel pump enhances racing performance by delivering a higher fuel flow rate. E85 is a blend of 85% ethanol and 15% gasoline, which requires more fuel to maintain the desired air-fuel ratio in high-performance engines. High-flow pumps supply enough fuel to meet this demand.
Next, E85 has a higher oxygen content than traditional gasoline. This characteristic allows for more complete combustion, which increases power output. Efficient fuel pumps ensure that the engine receives the correct fuel mixture at all times, maximizing performance.
Additionally, E85 burns cooler than gasoline. This leads to lower engine temperatures during races, reducing the risk of overheating and engine knock. An external fuel pump helps maintain consistent fuel pressure, contributing to the stability of the combustion process.
Moreover, external fuel pumps can handle the corrosive properties of ethanol. E85 can deteriorate certain materials found in standard pumps. A specialized pump designed for E85 ensures durability and reliability, which are crucial during racing conditions.
In summary, an E85 external fuel pump enhances racing performance by providing high flow rates, supporting optimal combustion, reducing engine temperatures, and offering durability against ethanol’s corrosive effects.
Which Top Brands Excel in Manufacturing E85 External Fuel Pumps?
Several top brands excel in manufacturing E85 external fuel pumps, with notable names including AEM, DeatschWerks, Walbro, and Bosch.
- AEM
- DeatschWerks
- Walbro
- Bosch
These brands are recognized for various attributes in their E85 external fuel pumps. They focus on performance efficiency, fuel compatibility, durability, and customer satisfaction.
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AEM:
AEM excels in manufacturing E85 external fuel pumps known for their high performance and efficiency. They provide excellent flow rates, making them suitable for high-horsepower applications. A study in 2022 by Engine Builder noted that AEM pumps consistently maintain optimal pressure levels with ethanol blends, showcasing durability under rigorous usage conditions. -
DeatschWerks:
DeatschWerks is renowned for its precision engineering and comprehensive testing. Their pumps are specifically designed for compatibility with ethanol fuels, ensuring minimal wear and longevity. According to research by Fuel System Technology in 2021, DeatschWerks pumps show an innovative design allowing for seamless integration into various vehicle platforms, appealing to both tuners and daily drivers. -
Walbro:
Walbro has a longstanding reputation in the fuel pump industry. Their E85 external fuel pumps offer reliable performance and are widely used in aftermarket installations. A report by Automotive Performance Magazine highlighted Walbro’s pumps for their ability to withstand corrosive effects from ethanol, ensuring consistent performance over time. Customers frequently cite ease of installation and compatibility with a range of vehicles as key benefits. -
Bosch:
Bosch is recognized for its robust design and advanced fuel pump technology. Their external fuel pumps feature innovative electronics that enhance fuel delivery efficiency. A 2023 study published in the Journal of Automotive Engineering praised Bosch pumps for their low noise operation and reliability, further solidifying their position as a trusted option for E85 fuel applications.
What Specifications Should You Consider When Choosing an E85 External Fuel Pump?
When choosing an E85 external fuel pump, consider the following specifications:
- Fuel Compatibility
- Flow Rate
- Pressure Rating
- Power Requirements
- Material Construction
- Size and Fitment
- Noise Level
- Brand Reliability
- Warranty and Support
Understanding these specifications is crucial as they can significantly affect performance and usability.
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Fuel Compatibility: Fuel compatibility refers to the pump’s ability to effectively handle E85 fuel. E85 consists of 85% ethanol and 15% gasoline, requiring pumps made from materials that resist ethanol’s corrosive properties. Using an appropriate pump prevents damage and ensures proper function.
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Flow Rate: Flow rate measures the amount of fuel pumped per hour and is crucial for performance. A higher flow rate is essential for high-performance engines, especially those with modifications. For instance, a flow rate of 255 liters per hour is common for upgraded systems, but specific needs may vary based on engine requirements.
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Pressure Rating: Pressure rating indicates the maximum pressure the pump can generate. High-performance applications often need pumps with ratings above 60 PSI to provide adequate fuel delivery under load. Insufficient pressure can lead to poor engine performance or failure to start.
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Power Requirements: Power requirements detail the electrical needs of the pump. Most pumps operate on 12 volts, but the amperage can vary. Ensure the vehicle’s electrical system can support the pump’s power needs to avoid potential strain on the system.
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Material Construction: Material construction encompasses the physical materials used in the pump’s design, which should include high-quality materials resistant to corrosion. Pumps made from stainless steel or specific plastics are preferred for longevity and reliability with E85.
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Size and Fitment: Size and fitment refer to the dimensions of the pump and whether it fits within the vehicle’s existing fuel system. A proper fit is essential to avoid modifications that could lead to installation complications or performance issues.
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Noise Level: Noise level describes how loud the pump operates during function. Some users prefer quieter pumps to reduce noise in their vehicle. Assess noise levels if a quiet operating environment is a priority.
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Brand Reliability: Brand reliability considers the manufacturer’s reputation in the market for producing durable and effective products. Established brands often provide better customer support and product warranties which can enhance long-term satisfaction.
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Warranty and Support: Warranty and support outline the protection offered by the manufacturer for defects or performance issues. A strong warranty can indicate the manufacturer’s confidence in their product, and good customer support can assist with any issues.
These specifications each play a significant role in ensuring that the selected E85 external fuel pump meets performance needs, fits well within the existing system, and ensures long-term reliability.
How Can You Properly Install and Maintain Your E85 External Fuel Pump?
To properly install and maintain your E85 external fuel pump, follow the manufacturer’s instructions, ensure proper fuel system compatibility, and perform regular checks for leaks and performance.
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Manufacturer’s instructions: Always refer to the installation manual provided by the manufacturer. This document contains specific guidelines tailored to the E85 fuel pump model. It typically includes information on wiring, placement, and securing the pump.
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Fuel system compatibility: E85 fuel contains up to 85% ethanol. Not all fuel pumps can handle this concentration due to material incompatibilities. Ensure your external fuel pump is rated for E85 usage to prevent degradation and failure. Using an incompatible pump can lead to contamination and damage to the fuel system.
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Regular inspections: Check for leaks and performance issues at least once every six months. Look for any signs of leakage around the fuel pump connections and fittings. If you notice any drops or stains, address them immediately to avoid potential fires.
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Fuel filters: Replace fuel filters regularly as recommended by the manufacturer, typically every 10,000 to 15,000 miles. Clogged filters can restrict fuel flow, impacting performance and potentially damaging the pump.
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Fuel quality: Use high-quality E85 fuel from reputable suppliers. Poor quality fuels may contain contaminants that can harm your fuel pump and overall system.
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Electrical connections: Inspect wiring and connections for signs of wear, corrosion, or damage. Clean and secure all electrical connections to ensure a reliable pump operation. Loose or deteriorated connections can lead to pump failures and performance issues.
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Pump orientation: Install the fuel pump in a horizontal or specified orientation, ensuring it is lower than the fuel tank. Proper orientation facilitates fuel flow and helps prevent air from entering the system.
By following these steps, you can ensure the correct operation and longevity of your E85 external fuel pump, while contributing to the overall efficiency of your fuel system.
What Are Users Saying About Their Experiences with E85 External Fuel Pumps?
Users report mixed experiences with E85 external fuel pumps, with both positive and negative feedback on performance and reliability.
- Performance Quality
- Installation Ease
- Fuel Efficiency
- Durability
- Noise Levels
- Compatibility with Various Vehicles
Transitioning from these points, users express differing views based on their experiences with E85 external fuel pumps.
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Performance Quality: Users note that performance quality varies significantly among brands. Many report improved power output and smoother engine performance when using compatible E85 pumps. A study by the Automotive Research Center in 2021 highlighted that pumps designed specifically for E85 tend to deliver better fuel atomization, leading to efficient combustion.
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Installation Ease: Many users find the installation process straightforward. Several pumps come with detailed instructions and necessary fittings. However, some users report challenges with fitting their specific vehicle models. According to a user survey conducted by FuelTech in 2022, 70% of respondents rated installation as easy, while 30% faced issues.
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Fuel Efficiency: Fuel efficiency varies with the use of E85 external fuel pumps. Some users claim to achieve better miles per gallon (MPG) with high-quality pumps. Conversely, others find that fuel economy did not significantly improve, drawing opinions from various car enthusiasts forums. A 2023 analysis by the Green Car Journal indicated that users could see a 5-15% difference in fuel consumption, depending on the pump’s specifications.
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Durability: Users report differing experiences regarding the durability of E85 pumps. Many express satisfaction with pumps that boast a long lifespan and reliable operation. On the other hand, some individuals experienced early failures attributed to poor manufacturing quality. A study from the Fuel Systems Association in 2021 reported that high-quality pumps can last over 100,000 miles, while cheaper alternatives may fail after just a few thousand miles.
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Noise Levels: Noise levels of E85 pumps are another point of discussion. Some users mention that certain models operate more quietly than others. Reviews on automotive forums frequently mention how excessive noise can detract from the driving experience. A comparative study found that pumps with advanced noise-canceling technology have lower operational noise, which contributes to user satisfaction.
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Compatibility with Various Vehicles: Compatibility is a crucial issue, with users indicating various experiences based on their vehicle types. Some pumps are specifically designed for performance vehicles, while others cater to everyday drivers. Reports suggest that uncertainty exists around compatibility for older car models, as noted in a 2022 survey by Car Mods Weekly, where 40% of respondents with older vehicles faced compatibility challenges.