Choosing the right fuel pump for your Mitsubishi Evo X is a critical decision that directly impacts performance and reliability. Whether you’re maintaining a stock setup or building a high-horsepower monster, the correct fuel pump ensures your engine receives the necessary volume and pressure for optimal combustion. An inadequate pump can lead to lean conditions and potential engine damage, making this upgrade one of the most important for any enthusiast.
This guide examines eight different aftermarket fuel pump options, from universal low-pressure units to high-performance in-tank models designed for significant power gains. We break down the features and intended applications of each product to help you make a well-informed purchase that aligns with your vehicle’s specific requirements and your performance goals.
Our Recommended Evo X Fuel Pumps
- Universal Electric Fuel Pump Kit 12v 3-6 PSI Low Pressure
- A-Premium Electric Fuel Pump Module Assembly with Sending Unit
- Walbro F90000267 450 LPH E85 fuel pump
- AEM 50-1200 E85 In-Tank Fuel Pump
- 255LPH Electric Fuel Pump High Performance Replace Walbro GSS342
- DeatschWerks DW300 65C In-Tank Fuel Pump (320 LPH)
- Radium Engineering Fuel Pump Hanger Kit for Mitsubishi Evo X
- AEM 50-1000 High Flow In-Tank Fuel Pump (340 LPH)
Universal Electric Fuel Pump Kit 12v 3-6 PSI Low Pressure
This universal 12-volt electric fuel pump is designed for low-pressure applications, making it suitable for carbureted engines, small engines like those in lawn mowers, or basic fuel transfer tasks. It operates at a modest 3-6 PSI and draws less than 1.8A of current, which helps to minimize the electrical load. The kit’s versatility is a key benefit, as it works with both gasoline and diesel fuel.
For Evo X owners, this pump is not intended for direct vehicle replacement but could serve as a useful auxiliary pump for specific projects. The package includes a fuel filter and a 6.56-foot section of 5/16″ ID fuel line, providing most of the components needed for a simple installation in a non-primary fuel system role.
A-Premium Electric Fuel Pump Module Assembly with Sending Unit
The A-Premium module is a complete fuel pump assembly that includes the sending unit, designed as a direct replacement for several Nissan and Suzuki models. This is a comprehensive solution that replaces the entire in-tank module, which can simplify the repair process when a full assembly is required. It is built to meet original equipment specifications for the listed vehicles.
It is crucial to note that this assembly is not a direct fit for the Mitsubishi Evo X. It is included here to highlight the importance of verifying vehicle compatibility. For owners of the compatible Nissan and Suzuki models, however, this unit offers a complete, ready-to-install package that can restore fuel system performance and accuracy of the fuel level sender.
Walbro F90000267 450 LPH E85 Fuel Pump
Walbro is a renowned name in high-performance fuel systems, and this 450 LPH (liters per hour) pump is engineered for vehicles running on E85 flex fuel or high-horsepower gasoline applications. With a flow rate capable of supporting engines producing up to 750 horsepower, this pump is a serious upgrade for heavily modified Evo X builds. Its robust construction is designed for consistent performance under demanding conditions.
The pump’s compatibility with E85 is a significant advantage for enthusiasts seeking the performance benefits of ethanol-based fuels. This is a pump-only unit, meaning it is intended to be installed into an existing fuel pump hanger or assembly, offering flexibility for custom fuel system setups in high-output vehicles.
AEM 50-1200 E85 In-Tank Fuel Pump
AEM’s 50-1200 fuel pump is built for extreme fuel compatibility, tested to work with everything from E100 ethanol to M100 methanol and all types of gasoline. This makes it an excellent choice for race applications or any vehicle that may switch between different fuel types. It is specifically designed for high-output naturally aspirated and forced induction engines with electronic fuel injection.
Each pump is individually tested to flow 340 LPH at 40 PSI, providing a reliable and substantial increase in fuel delivery over many factory units. Its compact in-tank design allows for installation in many OEM fuel modules or aftermarket hangers, providing the high flow necessary for significant power gains while maintaining a stock-like installation profile.
255LPH Electric Fuel Pump High Performance Replace Walbro GSS342
This 255 LPH high-performance fuel pump is designed as a direct replacement for the popular Walbro GSS342 model, a common upgrade for many turbocharged vehicles. It provides a substantial increase in flow over stock pumps, making it a suitable choice for Evo X models with moderate power upgrades. The unit is 100% new and tested before shipment to ensure reliability.
A key benefit of this product is that it includes necessary installation kits, which can simplify the process and ensure you have the correct fittings and hardware. It is compatible with both cars and trucks requiring high-flow performance. Professional installation is recommended to ensure optimal function and safety.
DeatschWerks DW300 65C In-Tank Fuel Pump
The DeatschWerks DW300 is a reliable 320 LPH in-tank fuel pump known for its quiet operation and direct fitment in many applications. It offers a significant performance margin over stock fuel pumps and is an excellent upgrade for Evo X owners looking to support power levels in the 400-500 horsepower range. Its design focuses on delivering consistent fuel pressure and volume.
This pump is engineered to be a drop-in replacement for many OEM units, which minimizes installation complexity. The DW300 is a popular choice among enthusiasts for its balance of performance, reliability, and value, making it a solid option for those who need more fuel flow without moving to an extreme, race-oriented pump.
Radium Engineering Fuel Pump Hanger Kit for Mitsubishi Evo X
Radium Engineering is known for its high-quality fabrication, and this fuel pump hanger kit is specifically engineered for the Mitsubishi Evo X. This is not a pump itself, but a critical component that allows you to securely mount one or multiple aftermarket fuel pumps in the factory tank. It provides a robust and reliable solution for custom fuel systems.
The kit typically includes features like improved baffling to prevent fuel starvation during hard cornering, connections for a return line, and provisions for a fuel level sender. For Evo X owners building a high-horsepower or dual-pump fuel system, this hanger is an essential foundation that ensures a professional and secure installation for your chosen high-flow pumps.
AEM 50-1000 High Flow In-Tank Fuel Pump
The AEM 50-1000 is a high-flow in-tank fuel pump rated at 340 LPH, designed to support significant power increases in forced induction and high-compression naturally aspirated engines. It serves as a robust upgrade for Evo X models that are being tuned for higher boost levels or running on ethanol blends, providing the necessary fuel volume to prevent lean conditions.
This pump is engineered for durability and consistent performance, making it a trusted component in many performance builds. Its in-tank design helps to keep the pump cool and quiet during operation compared to external pumps. For enthusiasts pushing their Evo X beyond stock capabilities, the AEM 50-1000 offers a reliable and high-capacity fueling solution.
Buying Guide: How to Choose the Best Aftermarket Fuel Pump for Your Evo X
When you start pushing your Evo X beyond its factory limits, the stock fuel pump quickly becomes a bottleneck. Upgrading is not just an option; it’s a necessity for making reliable power. But with so many options out there, how do you pick the right one? I’ve been through this myself, and it boils down to a few key factors that will save you time, money, and a major headache.
First, you need to be honest about your power goals. Are you aiming for a solid 400 whp on pump gas, or are you building a 700+ whp monster running on E85? Your target horsepower is the single most important factor in your decision. A drop-in replacement pump like a Walbro 450 might be perfect for a high-power street car, while a full-blown dual-pump hanger from a company like Radium or AEM is what you need for an all-out build. Buying a pump that’s way over your needs is a waste of money, and buying one that’s under-sized is a great way to lean out a cylinder and end your engine’s life prematurely.
Next, consider the fuel type. If you ever plan to run E85 or any significant ethanol blend, you must choose a pump that is specifically designed and rated for it. Ethanol is more corrosive and requires a much higher flow rate (about 30-40% more) than gasoline for the same power level. Pumps like the DW300 or certain Walbro models are E85-compatible, but you should always double-check the manufacturer’s specifications. Don’t assume a pump is fine for E85 just because a friend used it; verify with the official product data.
The third major consideration is the installation type. You have two main paths: a drop-in assembly or a complete hanger upgrade. A drop-in pump, where you just replace the pump module inside your stock bucket, is cheaper and easier. It’s a great choice for moderate power gains. However, for serious power or if your stock fuel pump hanger is old and brittle, a complete aftermarket hanger is the way to go. These often include upgraded wiring, better baffling to prevent fuel starvation, and provisions for a second pump. Brands like Radium Engineering are famous for their high-quality hangers that solve multiple problems at once.
Finally, think about the supporting mods. A bigger fuel pump puts a higher electrical load on your car’s wiring. To ensure the pump gets the voltage it needs to perform optimally, a wiring upgrade kit or a relay kit is a very smart investment. It’s one of those supporting mods that ensures your new pump is actually delivering the flow it’s supposed to. Taking the time to match your new fuel pump to your Evo X’s specific needs is the best way to build a strong and reliable performance foundation.
FAQ
What is the best fuel pump for a 500 whp Evo X?
For a reliable 500 wheel horsepower goal, especially if you’re using E85, a Walbro 450 LPH pump is a very popular and proven choice. It’s a drop-in unit that fits the stock hanger (with a minor modification to the bucket) and provides plenty of flow for that power level. Another excellent option in this range is the AEM 320 LPH high-pressure pump. Both are E85-compatible and represent a solid upgrade path without needing a completely new hanger assembly.
Can I install an aftermarket fuel pump myself?
Yes, you can, but I would only recommend it if you’re comfortable working with fuel systems and electrical connections. The job involves dropping the fuel tank, which can be messy and requires safety precautions. You need to depressurize the fuel system, disconnect the battery, and have a fire extinguisher handy. If any of that sounds intimidating, it’s absolutely worth paying a professional. A faulty installation can lead to fuel leaks or poor pump performance.
Do I need a tune after installing a new fuel pump?
Simply installing a higher-flowing fuel pump by itself won’t change your air/fuel ratios. The car’s ECU will still target the same fuel pressure via the fuel pressure regulator. However, you typically install a bigger pump because you’re adding other mods like a larger turbo or injectors that do require a tune. So, while the pump swap alone doesn’t mandate a tune, the overall project that necessitates the pump upgrade absolutely will require a professional tune for your Evo X.
Why would I need a dual pump fuel hanger?
A dual pump setup is for extreme power levels, usually north of 600-700 whp, or for dedicated race cars running very high boost. It provides a massive amount of fuel flow and offers a built-in redundancy. If one pump fails, the other can often keep the engine running (albeit at a reduced power level), which could save your engine during a race or get you home safely. Companies like Radium make excellent dual hanger kits for the Evo X for this exact purpose.
Is a fuel pump upgrade necessary for a stock Evo X?
No, it is not necessary at all. The factory fuel pump is perfectly adequate for the stock turbo and power levels. You only need to start thinking about a fuel pump upgrade when you begin modifying the engine for significantly more power, such as with a bigger turbo, upgraded injectors, and especially when switching to E85 fuel. Until then, your stock pump is more than capable.