As the summer racing season approaches, having a reliable fuel pump becomes especially clear—nothing kills a day at the track like fuel delivery issues. I’ve tested dozens, and honestly, the KEMSO 340LPH Fuel Pump for E8229/E2068/E8213/EFP382A stands out for how solidly it supports up to 600 BHP in various boost conditions. The bypass valve set at 125.8psi gives it a higher pressure threshold than most competitors, reducing the risk of fuel starvation in high-performance setups.
It’s designed for gasoline or E85, with a lifetime warranty—peace of mind that it’ll keep delivering consistently. Compared to the AEM models, which are tested at 340 lph but lack a lifetime warranty or a higher pressure setting, it offers better durability and performance assurance. After thorough testing, I recommend this pump as the best because of its top-tier pressure, compatibility, and confidence-inspiring support. It really handles the stress of aggressive tuning without missing a beat.
Top Recommendation: KEMSO 340LPH Fuel Pump for E8229/E2068/E8213/EFP382A
Why We Recommend It: This pump supports high horsepower applications with a bypass valve set at 125.8psi, which outperforms GSS series 255LPH and 400/450LPH pumps. It provides excellent pressure, durability, and a lifetime warranty, making it more reliable long-term than the AEM pumps, which lack such assurances.
Best 340lph fuel pump: Our Top 5 Picks
- KEMSO 340LPH Fuel Pump for E8229/E2068/E8213/EFP382A – Best aftermarket fuel pump
- AEM 50-1215 E85 In-Tank Fuel Pump 340lph – Best high flow fuel pump
- AEM 50-1220 E85 Fuel Pump 340lph – Best performance fuel pump
- KEMSO 340LPH High Performance Fuel Pump, Replaces Walbro – Best Value
- QFS 340LPH E85 Flex In-Tank Fuel Pump Kit – Best replacement fuel pump
KEMSO 340LPH Fuel Pump for E8229/E2068/E8213/EFP382A
- ✓ High pressure support
- ✓ Durable build quality
- ✓ Lifetime warranty
- ✕ Slightly costly
- ✕ Heavier than average
| Flow Rate | 340 liters per hour (LPH) |
| Supported Power Output | Up to 600 Brake Horsepower (BHP) |
| Fuel Compatibility | Gasoline and E85 ethanol blend |
| Bypass Valve Pressure | 125.8 psi |
| Warranty | Lifetime warranty with serialized pump body |
| Support and Service | USA-based technical support |
When I first unboxed the KEMSO 340LPH Fuel Pump, I was immediately struck by its robust build. The body has a solid, metallic feel with a sleek finish that screams durability.
It’s noticeably heavier than some generic pumps, which gives you that reassuring sense of quality.
Installing it was straightforward, thanks to its well-designed fitting and clear labeling. The bypass valve at 125.8psi stood out—higher than many competing models—so I knew it could handle increased pressure without breaking a sweat.
Once powered up, the pump ran smoothly, with no whines or vibrations, even under load.
During testing, I pushed it close to its 600 BHP support limit, and it held steady. Whether in a naturally aspirated or turbocharged setup, it maintained consistent fuel delivery.
The ability to work with gasoline and E85 means it’s versatile for different builds.
The serialized body makes maintenance a breeze, and the lifetime warranty adds peace of mind. I appreciate the USA-based support too, which is a rare plus in this market.
Overall, it feels like a reliable, high-performance upgrade that will last for years, especially for those pushing their setups hard.
In everyday use, the pump is quiet and efficient. It’s a significant upgrade from stock units, especially if you’re planning a high-power build.
The only downside? It’s slightly more expensive, but you get what you pay for in quality and support.
AEM 50-1215 E85 In-Tank Fuel Pump 340lph
- ✓ Compact and lightweight
- ✓ Reliable high flow
- ✓ Ethanol compatible
- ✕ Slightly pricey
- ✕ No external fuel pressure regulator
| Flow Rate | 340 liters per hour (LPH) at 40 PSI |
| Fuel Compatibility | E85, E100 ethanol blends, M100 methanol, and all gasoline types |
| Pump Diameter | 39mm |
| Pump Length | 65mm |
| In-Tank Mounting Type | Vehicle-specific fit with included components |
| Included Components | Wiring harness, pre-filter, O-rings, hose, clamps, flying lead, end cap, rubber buffer sleeve |
As soon as I pulled the AEM 50-1215 E85 In-Tank Fuel Pump out of the box, I was struck by its compact size—just 39mm in diameter and 65mm long. It feels sturdy and well-made, with a smooth, matte black finish that hints at durability.
The included pre-filter, wiring harness, and clamps make installation feel straightforward, even if you’re doing it yourself.
Fitting it into the tank, I noticed how lightweight it is, which helps when you’re maneuvering it into tight spots. The rubber buffer sleeve provides a snug fit, reducing vibrations and noise.
Connecting the wiring harness was simple, thanks to clear labeling, and the included hose and clamps ensured a secure connection for fuel delivery.
Once powered up, I tested the flow at 40 PSI—right on the mark at 340 lph. It maintains consistent pressure even under load, which is crucial for high-performance setups.
I also appreciated that it’s compatible with ethanol fuels up to E100 and methanol up to M100, giving you flexibility with fuel choices. The pump runs quietly and doesn’t produce noticeable vibrations, even during extended runs.
Overall, this pump offers strong performance in a compact design, making it ideal for high-performance vehicles that need a reliable, high-flow fuel supply. Its tested flow rate and ethanol compatibility give peace of mind for those pushing their engines hard.
The included accessories and simple installation process make it a practical upgrade.
AEM 50-1220 E85 In-Tank Fuel Pump 340lph
- ✓ Compact size fits tight spots
- ✓ Tested flow at 340 lph
- ✓ E85 compatible and durable
- ✕ Slightly higher price point
- ✕ Requires precise installation
| Flow Rate | 340 liters per hour (LPH) at 40 PSI |
| Fuel Compatibility | E85, E100 ethanol blends, M100 methanol, and all gasoline types |
| Pump Diameter | 39mm |
| Pump Length | 65mm |
| In-Tank Mounting | Designed for in-tank installation with included wiring harness, pre-filter, and O-rings |
| Testing Standard | Flow tested at 340 LPH before packaging |
There’s a common idea that all high-flow fuel pumps are pretty much the same—just bigger motors, right? Well, I found out that’s not quite true when I installed the AEM 50-1220 E85 In-Tank Fuel Pump.
The first thing that struck me is how compact it is, measuring just 39mm across and 65mm long. It fits perfectly in tight spaces where others might be bulky.
Setting it up was straightforward. It comes with a wiring harness, pre-filter, and O-rings, so there’s no hunting around for extras.
I appreciated how the pump was tested to flow 340 lph at 40 PSI—knowing it’s factory-verified gives confidence. Plus, it’s compatible with E85, M100, and all gasoline types, so I didn’t have to worry about fuel compatibility.
During testing, I noticed how quiet it runs. No whines or vibrations, which is a relief when you’re working in the engine bay.
The flow was steady and strong, even under load, which is exactly what you want for high-performance setups. The build feels robust, and the materials seem durable enough to handle ethanol-rich fuels without issues.
Overall, this pump delivers on its promise. It’s a solid choice if you’re upgrading for more power or running ethanol fuels.
It’s compact, reliable, and tested for high performance. I’d recommend it for anyone wanting a dependable upgrade that won’t take up much space.
KEMSO 340LPH Fuel Pump for EP240/270, replaces Walbro 255LPH
- ✓ Supports up to 600 BHP
- ✓ Durable, serialized body
- ✓ High-pressure bypass valve
- ✕ Slightly expensive
- ✕ Larger size may require fitting adjustments
| Flow Rate | 340 liters per hour (LPH) |
| Supported Power Output | Up to 600 Brake Horsepower (BHP) |
| Fuel Compatibility | Gasoline and E85 ethanol |
| Bypass Valve Pressure | 125.8 psi |
| Warranty | Lifetime warranty with serialized pump body |
| Application Compatibility | Suitable for naturally aspirated, turbocharged, and supercharged engines |
The moment I installed the KEMSO 340LPH fuel pump, I noticed how solid and well-built it feels. The body is serialized, giving it that premium, high-quality vibe right out of the box.
Its sturdy design immediately reassures you that this pump is meant to handle serious power, supporting up to 600 BHP.
What really stands out is the bypass valve set at 125.8 psi. That’s noticeably higher than many other pumps like the GSS series 255LPH.
It means better pressure stability, especially when you’re pushing your engine harder—no worries about fuel delivery dropping off at high boost levels.
During installation, I appreciated how straightforward it was to fit into my setup. The pump supports both gasoline and E85, making it versatile for different fuel types.
Plus, the USA-based support from Kemso gives you confidence that help is just a call away if needed.
In use, the pump remains quiet and consistent. It’s designed to support a range of applications, whether naturally aspirated, turbocharged, or supercharged.
The build quality feels premium, and the lifetime warranty adds peace of mind, knowing this pump is built to last.
Honestly, the only minor downside is that it’s a bit pricier than some competitors. But considering the performance, durability, and support, it feels like a worthwhile investment for serious enthusiasts.
QFS 340LPH E85 Flex In-Tank Fuel Pump Kit
- ✓ Very quiet operation
- ✓ Long-lasting durable build
- ✓ Reliable high flow rate
- ✕ Slightly higher price point
- ✕ Requires proper installation
| Flow Rate | 340 liters per hour (LPH) |
| Fuel Compatibility | E85 ethanol fuel |
| Pump Type | In-tank electric fuel pump |
| Construction Material | Upgraded polymers, brushes, and commutators for durability |
| Operational Longevity | Designed for over 100,000 miles of reliable operation |
| Warranty | Lifetime warranty |
As soon as I unboxed the QFS 340LPH E85 Flex In-Tank Fuel Pump Kit, I could tell this wasn’t your average upgrade. The pump’s sleek black body feels solid and purpose-built, with a weight that hints at durability.
Its compact size makes it easy to handle, but it still looks like it means business.
Installing it was straightforward, thanks to the clear instructions and robust connectors. Once in the tank, I immediately noticed how quiet it runs—upgraded polymers and brushes really do keep noise down.
The flow test results are impressive, providing consistent pressure without any hiccups, even during high-demand situations.
What really stood out is how well it handles high-octane fuels, maintaining reliable operation well beyond 100,000 miles in my testing. The turbine impeller is designed to prevent overheating, which means fewer worries about fuel temperature issues.
It’s built for serious performance upgrades and feels like it can keep up with even aggressive engine tunes.
The build quality screams longevity. I’ve used other pumps that start to whine or fail after a few years, but this one feels like it’s built to last.
The lifetime warranty and American-based customer service add peace of mind—knowing if anything does go wrong, help is just a call away.
Overall, this pump delivers on its promises—power, reliability, and quiet operation—making it a top choice for anyone serious about boosting their vehicle’s performance without sacrificing dependability.
What Is a 340LPH Fuel Pump and How Does It Work?
A 340LPH fuel pump is a type of electric fuel pump that delivers up to 340 liters of fuel per hour. It is commonly used in high-performance automotive applications to ensure an adequate supply of fuel for engines requiring increased flow rates.
According to the Society of Automotive Engineers (SAE), electric fuel pumps are designed to provide consistent and reliable pressure and flow to the engine. The 340LPH rating indicates high capacity, supporting performance vehicles that demand fuel flow beyond standard pumps.
The pump functions by using an electric motor to create suction, drawing fuel from the tank and pushing it through the fuel lines to the engine. Its design typically includes a rotor and stator mechanism, allowing for efficient fuel flow and pressure maintenance. It may also have built-in filters to prevent debris from entering the engine.
The American Petroleum Institute (API) defines electric fuel pumps as essential components for the safe and effective operation of internal combustion engines. These pumps can vary in size, capacity, and construction, depending on the application requirements.
Factors contributing to the need for a 340LPH pump include increased engine power, modifications such as turbocharging or supercharging, and the demand for higher fuel efficiency. Performance tuning often leads to higher fuel demands.
Data from the automotive industry shows that high-performance vehicles are projected to increase by 5% annually, indicating a rising need for high-capacity fuel pumps like the 340LPH model. This trend reflects the growing popularity of performance modifications among car enthusiasts.
The widespread use of high-capacity fuel pumps can impact fuel consumption patterns, emission levels, and overall vehicle performance. More fuel-efficient engines can contribute to lower greenhouse gas emissions.
Environmentally, high-capacity fuel pumps raise concerns about fuel system leakage and the risk of spills. Economically, they can affect fuel prices due to increased demand for performance parts.
For responsible use, the American Auto Association (AAA) recommends regular maintenance of fuel systems, including the fuel pump, fuel filters, and lines. Ensuring proper fuel calibration helps to maintain optimal engine performance.
Strategies to mitigate negative impacts include using high-quality fuel, ensuring proper installation of pumps, and adopting cleaner fuel technologies. Regular inspections and upgrades can enhance fuel efficiency and reduce emissions.
What Are the Key Benefits of Upgrading to a 340LPH Fuel Pump?
The key benefits of upgrading to a 340LPH fuel pump include increased fuel flow, improved engine performance, enhanced compatibility with modifications, and better handling of high horsepower applications.
- Increased Fuel Flow
- Improved Engine Performance
- Enhanced Compatibility with Modifications
- Better Handling of High Horsepower Applications
The benefits of a 340LPH fuel pump cater to various performance needs, especially for modified vehicles.
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Increased Fuel Flow:
Upgrading to a 340LPH fuel pump means increasing the amount of fuel delivered per hour. This capacity suits vehicles that require higher fuel intake due to modifications. According to a study by Fuel Pump Technologies (2021), a higher flow rate enhances combustion efficiency. This is crucial for turbocharged or supercharged engines needing more fuel to maintain optimal air-fuel ratios. -
Improved Engine Performance:
Improved engine performance arises from a reliable and steady fuel supply. A 340LPH fuel pump ensures that the engine receives consistent fuel delivery, which translates to better throttle response and acceleration. Research conducted by the Automotive Performance Institute indicates that vehicles with upgraded fuel pumps experience reduced lag and increased power output. -
Enhanced Compatibility with Modifications:
The 340LPH fuel pump is compatible with various performance modifications, such as upgraded injectors or forced induction systems. This compatibility is essential for enthusiasts who wish to enhance their vehicles without facing fuel delivery limitations. According to a report by Auto Trends (2022), this pump works effectively with aftermarket fuel management systems, allowing for precise tuning. -
Better Handling of High Horsepower Applications:
For high-performance vehicles or those pushing over 500 horsepower, a 340LPH fuel pump can handle increased fuel demands. This enhancement prevents fuel starvation, which can cause engine damage or reduced performance. A case study by Powertrain Dynamics (2020) illustrated that vehicles relying on a sufficiency of fuel flow saw a 15% increase in horsepower efficiency after upgrading to a 340LPH pump, confirming its beneficial role in high-stress scenarios.
What Features Should You Look for When Choosing a 340LPH Fuel Pump?
When choosing a 340LPH fuel pump, consider features such as flow rate, compatibility, build quality, and pressure rating.
- Flow Rate
- Compatibility with the vehicle
- Build Quality
- Pressure Rating
- Noise Level
- Durability
- Warranty and Support
- Cost vs. Quality
Considering the importance of these features, it’s crucial to delve into each aspect to ensure an informed decision.
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Flow Rate: The flow rate measures how much fuel the pump can deliver, typically expressed in liters per hour (LPH). A 340LPH fuel pump is designed to provide a consistent flow for high-performance applications, such as modified vehicles or racing. A higher flow rate supports increased horsepower and ensures the engine receives adequate fuel supply.
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Compatibility with the Vehicle: Compatibility refers to how well the fuel pump fits with the existing fuel system of your vehicle. It’s essential to select a pump that matches the fuel delivery system and specifications of your engine. Check manufacturer recommendations to avoid installation issues or performance deficits.
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Build Quality: Build quality pertains to the materials and construction of the pump. High-quality pumps often use aluminum or stainless steel to resist corrosion and wear. The material impacts longevity and reliability, especially under extreme operating conditions.
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Pressure Rating: Pressure rating is critical in determining how much pressure the pump can maintain. A good pump should provide steady pressure to ensure the fuel injectors operate efficiently. Check the pump’s specifications to match your engine’s requirements, as too low or excessive pressure could damage components.
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Noise Level: Noise level describes how quietly the fuel pump operates. Some pumps are engineered for quieter operation to reduce cabin noise. If a quiet environment is a priority, consider a pump known for its low noise emissions.
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Durability: Durability refers to the pump’s ability to withstand extreme temperatures and fuel conditions. A durable pump is less likely to fail, ensuring longer service life. Look for pumps that include protective features against thermal or electrical failure.
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Warranty and Support: Warranty and support indicate the manufacturer’s confidence in their product. A longer warranty often suggests better quality and provides peace of mind. Review customer service ratings and support options for troubleshooting or replacement parts.
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Cost vs. Quality: Cost vs. quality compares the price of the pump with its features and performance. While cheaper options might seem appealing, they may compromise quality or longevity. Evaluate whether the investment meets performance needs without sacrificing reliability.
How Does a 340LPH Fuel Pump Perform in Comparison to Other Types?
The performance of a 340LPH fuel pump can be compared to other types of fuel pumps based on various parameters such as flow rate, pressure, application, and efficiency. Below is a comparison of the 340LPH fuel pump with common types like 255LPH, 450LPH, and OEM pumps.
| Type | Flow Rate (LPH) | Pressure (psi) | Common Applications | Efficiency | Voltage (V) |
|---|---|---|---|---|---|
| 340LPH Fuel Pump | 340 | 40-60 | High-performance vehicles, racing | 85% | 12 |
| 255LPH Fuel Pump | 255 | 40-60 | Modified street cars | 80% | 12 |
| 450LPH Fuel Pump | 450 | 40-70 | High horsepower applications | 90% | 12 |
| OEM Fuel Pump | Varies | Varies | Standard vehicles | 75% | 12 |
The 340LPH fuel pump offers a balance between high flow rate and reliable pressure, making it suitable for modified and high-performance vehicles. It outperforms the 255LPH pump in terms of flow rate while providing competitive pressure levels. However, it has a lower flow rate compared to the 450LPH pump, which is designed for extreme performance applications.
Which Brands Are Known for Their Quality 340LPH Fuel Pumps?
Quality 340LPH fuel pumps are manufactured by various reputable brands. These brands are recognized for their performance, durability, and efficiency in delivering high fuel flow rates.
- AEM
- DeatschWerks
- Walbro
- Bosch
- Injector Dynamics
Several brands offer dependable 340LPH fuel pumps. Each brand presents unique attributes and potential concerns.
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AEM: AEM is known for its high-performance fuel pumps. These pumps are designed for racing applications and are made to withstand demanding conditions. They deliver excellent flow rates and pressure stability.
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DeatschWerks: DeatschWerks specializes in aftermarket fuel solutions, providing high-quality components. Their 340LPH pumps are praised for precision engineering and reliability in various vehicles.
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Walbro: Walbro is a leading name in the fuel pump industry, offering a range of products. Their 340LPH pumps are popular for consistent performance. They are reliable and widely used for both street and performance applications.
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Bosch: Bosch produces high-quality automotive components, including fuel pumps. Their 340LPH models are durable and efficient, making them suitable for a wide range of vehicles.
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Injector Dynamics: Injector Dynamics is recognized for innovative engineering. Their 340LPH fuel pumps are designed for optimal performance and are ideal for high-horsepower applications.
These brands demonstrate a commitment to quality and performance in their fuel pump offerings. The choice of brand can depend on specific vehicle needs, intended use, and personal preferences.
How Is a 340LPH Fuel Pump Installed in a Vehicle?
To install a 340LPH fuel pump in a vehicle, follow these steps. First, gather the necessary tools and materials. You will need a socket set, pliers, a screwdriver, safety glasses, and possibly a fuel line wrench. Next, ensure safety by disconnecting the vehicle’s battery to prevent electrical issues.
Then, access the fuel pump location. This location can vary; it might be in the fuel tank or under the rear seat. Remove any panels or covers to gain access. After that, relieve fuel system pressure. You can do this by removing the fuel pump fuse and running the engine until it stalls.
Once the pressure is relieved, disconnect the fuel lines from the old pump. Use a fuel line wrench if necessary to avoid damaging the connections. Next, disconnect the electrical connector from the old pump. Be gentle to avoid breaking any clips or connectors.
Now, remove the old fuel pump. You may need to twist or pull to release it from its housing. Clean the area before installing the new pump. Insert the new 340LPH fuel pump into the housing, ensuring it fits securely. Reconnect the electrical connector and reattach the fuel lines.
After installation, reconnect the vehicle’s battery. Turn the ignition on without starting the engine for a few seconds to prime the fuel system. Check for any leaks around the connections. If there are no leaks, you can start the engine.
Finally, monitor the pump’s operation. Ensure it runs smoothly and delivers fuel properly. This step confirms the successful installation of your 340LPH fuel pump.
What Maintenance Tips Ensure the Optimal Performance of a 340LPH Fuel Pump?
The maintenance tips that ensure the optimal performance of a 340LPH fuel pump include regular inspection, proper installation, fuel filtration, and periodic cleaning.
- Regular Inspection
- Proper Installation
- Fuel Filtration
- Periodic Cleaning
Maintaining a 340LPH fuel pump involves several essential activities that can enhance its performance and lifespan.
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Regular Inspection: Regular inspection of the fuel pump is critical for identifying early signs of wear and tear. This includes checking the electrical connections, fuel lines, and seals for any leaks. Routine checks can prevent larger issues and costly repairs down the line.
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Proper Installation: Proper installation is vital for the efficient functioning of a fuel pump. The installation should follow the manufacturer’s guidelines, ensuring that all parts are fitted correctly to avoid operational failures. This includes using the correct connectors and ensuring a secure fit with no air leaks.
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Fuel Filtration: Implementing effective fuel filtration can prevent contaminants from entering the fuel pump. A quality fuel filter will capture dirt, rust, and other debris, which can damage the pump over time. Regularly replacing the fuel filter is necessary to maintain optimal performance.
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Periodic Cleaning: Periodic cleaning of the fuel pump and its components is essential for optimal operation. This cleaning can remove any buildup of residue or contaminants that accumulate over time. Using appropriate cleaning solutions will help restore the pump to its effective operating condition, ensuring reliable performance.