When building a high-performance engine, the fuel system is the lifeblood that determines its ultimate potential. A weak or inadequate pump can be the single point of failure that holds back your entire project. For enthusiasts and professional builders alike, selecting a reliable, high-flow fuel pump is not an upgrade—it’s a necessity for achieving consistent power and protecting a significant investment in engine components.
The Aeromotive Stealth 340 series has become a benchmark in the aftermarket fuel system world. Renowned for its robust performance and versatile design, this pump family offers solutions for a wide range of applications, from retrofitting into factory tanks to complete fuel cell systems. This roundup will guide you through the key variants to help you select the perfect Stealth 340 system for your specific vehicle and horsepower goals.
The Best Aeromotive Stealth 340 Fuel Pump Systems
- Aeromotive 11540 340 Series Stealth Intank Fuel Pump
- Aeromotive 11542 340 Series Stealth Intank Fuel Pump
- Aeromotive 11569 340 Series Intank Fuel Pump for GM
- Aeromotive 18665 340 Stealth Fuel Cell, 20 Gallon
- Aeromotive 18638 340 Intank Pump for 86-98 Ford Mustang
- Aeromotive 340 Stealth In-Tank Fuel Pump
- Aeromotive 11142 Stealth 340 Fuel Pump System
- Aeromotive 11146 Stealth 340 System with Black Billet Hat
Aeromotive 11540 340 Series Stealth Intank Fuel Pump
This center inlet version of the Stealth 340 pump is a cornerstone for many high-performance builds. It delivers a substantial flow rate of over 340 liters per hour at 40 PSI, making it a significant upgrade over many standard OEM and aftermarket pumps. This ensures your engine receives the fuel volume it needs, especially under high load and high RPM conditions.
Its compact and lightweight design allows it to bolt directly into many existing fuel pump hanger assemblies, simplifying the installation process. This universal fitment makes it an ideal choice for both EFI and carbureted vehicles running on gasoline or E85. The pump is particularly well-suited for forced induction applications, as its enhanced flow capacity can readily support the demands of turbocharged or supercharged systems.
Aeromotive 11542 340 Series Stealth Intank Fuel Pump
The Aeromotive 11542 model offers the same high-performance specifications as its counterpart but features a key difference in its inlet design. This unit is configured with an inline inlet, which may be necessary for specific tank geometries or fuel line routing requirements in your vehicle. It provides the same robust 340 LPH flow to support serious horsepower gains.
Like the 11540, this pump is engineered for broad compatibility, working with a wide range of aftermarket setups. Its ability to handle E85 fuel makes it a future-proof choice for builders considering alternative fuels. The pump maintains factory-style mounting provisions, which helps retain a clean and professional installation that looks as good as it performs.
Aeromotive 11569 340 Series Intank Fuel Pump for GM
Designed with General Motors vehicles in mind, the 11569 model takes the guesswork out of compatibility for popular GM platforms. It provides the same exceptional fuel delivery—340 LPH at 40 PSI—that the series is known for, but in a package verified to work with GM-specific fuel pump hangers and sending units.
This model features the durable turbine pump mechanism that Aeromotive is known for, ensuring reliable performance under both continuous and pulse-modulated operation. This is critical for modern fuel-injected engines that use PWM to control fuel pressure. The center inlet design and E85 compatibility are retained, making it a versatile and long-lasting solution for your GM project or daily driver.
Aeromotive 18665 340 Stealth Fuel Cell, 20 Gallon
For applications where an in-tank installation isn’t feasible or for dedicated race vehicles, the Aeromotive 18665 provides a complete fuel system solution. This 20-gallon fuel cell comes pre-equipped with a Stealth 340 pump, creating a ready-to-run system that eliminates the need for custom fabrication of a fuel pump hanger.
Aeromotive’s reputation for precision engineering is evident in this product. The company utilizes aerospace-level tolerances and procedures to manufacture components that meet the rigorous demands of competitive motorsport. This fuel cell represents the pinnacle of performance fuel delivery, integrating the pump with a high-quality tank for a reliable and professional-grade setup.
Aeromotive 18638 340 Intank Pump for 86-98 Ford Mustang
This is a complete drop-in assembly designed specifically for 1986-1998 Ford Mustangs. It includes both the Stealth 340 fuel pump and a correctly configured hanger unit, ensuring a direct fit into the OEM tank without modification. This makes it an incredibly popular choice for Fox Body and SN-95 Mustang owners seeking a significant power upgrade.
The system is rated to support impressive horsepower levels. For fuel-injected engines, it can handle up to 850 naturally aspirated horsepower on gasoline and 700 horsepower with forced induction. For carbureted setups, the potential is even greater, supporting up to 1000 horsepower. These clear ratings take the uncertainty out of selecting a pump for your build.
Aeromotive 340 Stealth In-Tank Fuel Pump
As a more general listing for the core pump unit, this represents the essential Aeromotive Stealth 340 component. It is the high-output heart of the system, engineered to exceed standard flow rates by a considerable margin. This makes it a fundamental upgrade for anyone looking to improve their vehicle’s fuel delivery capabilities for increased performance.
The pump’s robust construction and versatile design mean it can be adapted to a multitude of applications. Whether you are building a custom hanger for a classic car or replacing a failed pump in a modern performance vehicle, this unit provides the reliability and flow needed. Its compatibility with both electronic fuel injection and carburetors adds to its wide appeal.
Aeromotive 11142 Stealth 340 Fuel Pump System
The Aeromotive 11142 is a comprehensive fuel pump system that typically includes the pump, a billet hat, and all necessary components for a complete installation. This type of system is ideal for vehicles where a factory-style hanger is not available or for use with a fuel cell. It provides a professional solution for securing the pump in the tank.
By opting for a full system like this, you ensure that all components are designed to work together seamlessly. This can simplify the installation process and provide peace of mind regarding the reliability of the entire assembly. These systems are often used in professional racing and high-end street builds where component integration is critical.
Aeromotive 11146 Stealth 340 System with Black Billet Hat
This system builds upon the 11142 by featuring a distinctive black billet hat. Beyond its aesthetic appeal, the billet hat is machined from a solid piece of aluminum for maximum strength and durability. It is designed to provide a secure and leak-free mounting point for the fuel pump, lines, and wiring.
The use of a billet hat represents an upgrade in both appearance and function over standard stamped steel components. It is a common choice for show cars and high-visibility engine bays where both performance and presentation are priorities. This system offers a complete, high-end solution for builders who want the best in both form and function.
Buying Guide: What to Look For in a High-Performance Fuel Pump
When you’re building a serious performance vehicle, choosing the right fuel pump isn’t just a suggestion; it’s a necessity. I’ve been through this process more times than I can count, and getting it wrong can mean the difference between a podium finish and a tow back to the pits. If you’re considering an upgrade, especially something like the Aeromotive Stealth 340 fuel pump system, there are a few key things you need to think about before you pull out your wallet.
First and foremost, you have to be honest about your power goals. This is the single most important factor. A pump that’s perfect for a 500 horsepower street car will be completely overwhelmed by a 1000 horsepower drag monster. The Aeromotive Stealth 340, for example, is rated to support up to 750 horsepower in a carbureted application and 675 horsepower with electronic fuel injection, which covers a massive range of popular builds. Matching the pump’s flow capacity to your engine’s demands ensures you won’t be starving it for fuel at high RPMs.
Next, consider the installation process. Are you looking for a direct replacement that drops into your factory tank, or are you building a custom fuel system with an external pump? The beauty of a unit like the Aeromotive Stealth 340 is its in-tank design, which helps keep things quiet and cool. However, this often requires modifying or replacing your factory fuel pump hanger or bucket. I always make sure to check what installation kit or accessories are needed for my specific vehicle. A clean, proper installation is critical for reliability.
Finally, think about the entire fuel system, not just the pump. A high-flow pump can push a lot of fuel, but it needs the right supporting parts to do its job effectively. This means looking at your fuel lines, filters, and regulator. Using the stock, restrictive fuel lines with a high-performance pump is like drinking a thick milkshake through a tiny coffee stirrer. You need to ensure the entire path from the tank to the engine is capable of handling the increased volume. Upgrading to a quality fuel pressure regulator is also non-negotiable for fine-tuning your fuel pressure and ensuring consistent delivery. Getting the right components from the start saves you time, money, and headaches down the road.
FAQ
What kind of horsepower can the Aeromotive Stealth 340 actually support?
This is probably the most common question I get. Aeromotive rates the Stealth 340 for up to 750 horsepower for carbureted engines and 675 horsepower for electronic fuel injection (EFI) applications. It’s important to remember that these are realistic, conservative ratings. The pump is capable of flowing 340 liters per hour, which gives you a solid safety margin. However, your actual supported power will also depend on your base fuel pressure and the overall efficiency of the rest of your fuel system.
Is this a direct drop-in replacement for my factory fuel pump?
In many cases, yes, but it’s rarely a simple plug-and-play situation. The pump itself is designed to be a universal in-tank unit. To install it, you typically need to modify your existing fuel pump assembly (the hanger) or purchase a specific installation kit or pre-assembled hanger from Aeromotive or another manufacturer for your car. I always recommend looking up the specific application guide for your vehicle to see what parts you’ll need for a clean and secure installation.
How noisy is the Aeromotive Stealth 340 fuel pump compared to my stock one?
One of the big selling points of the Stealth line is, as the name implies, its quiet operation. While no high-performance fuel pump is completely silent, the Stealth 340 is significantly quieter than many external or competing in-tank pumps. Inside the car with the radio on, you likely won’t hear it over the engine and exhaust. You might hear a slight hum from the rear of the car when you first turn the key to the “on” position, but it’s not obtrusive.
Do I need to upgrade my fuel lines and regulator if I install this pump?
Absolutely, yes. Think of your fuel system as a complete circuit. Installing a high-flow pump like the Aeromotive Stealth 340 without upgrading the rest of the system is a bit like putting a fire hose on a garden spigot. To get the full benefit, you should seriously consider upgrading to larger diameter fuel lines (like -8 AN) and a high-quality, adjustable fuel pressure regulator. The factory regulator and lines can become a bottleneck, preventing you from achieving the flow and pressure your engine needs under high load.
Can this pump handle E85 fuel?
Yes, the Aeromotive Stealth 340 is fully compatible with E85, gasoline, and racing fuels. Its robust internal construction is designed to withstand the corrosive effects of ethanol-blended fuels. It’s a great choice if you’re planning on running E85 now or in the future. Just remember that E85 requires a higher volumetric flow rate than gasoline, so your effective horsepower support will be lower when using it—plan your system accordingly.