20 Gallon Fuel Cell With Pump: The Complete Guide to Choosing and Installing Your High-Performance Fuel System

If you're building a high-horsepower race car, off-road truck, or dedicated track vehicle, a 20 gallon fuel cell with pump is the single most practical and upgrade-friendly fuel delivery solution you can buy. These integrated units—like the Aeromotive A1000 Stealth 20 Gallon Fuel Cell (part number 18661) and the Aeromotive 340 Stealth 20 Gallon Fuel Cell (part number 18665)—combine a baffled aluminum fuel cell, an internal high-flow electric fuel pump, a pre-filter, and a fuel level sending unit into one ready-to-install package. The bottom line is this: a 20-gallon fuel cell with a built-in pump eliminates the need for separate pump mounting, custom sumps, bulkhead fittings, and complex pre-pump plumbing. You simply strap the cell into your vehicle, connect your fuel lines and electrical wires, and you're done. For anyone running over 500 horsepower or competing in any form of motorsport, this is the fastest, cleanest, and most reliable path to a safe fuel system.

Why Choose a 20 Gallon Fuel Cell With an Integrated Pump?

The traditional approach to a race fuel system involves buying a bare fuel cell, then separately sourcing and mounting an external fuel pump, pre-filter, and all the associated AN fittings and hoses. That approach works, but it introduces multiple potential failure points and takes up a lot of space. A 20 gallon fuel cell with pump simplifies everything.

1. Ease of Installation

The biggest advantage is the "plug-and-play" nature of these cells. According to Aeromotive's product documentation, the Stealth fuel cells are designed so that "no drilling, tapping, bulkheads, sumps, or welding required. Simply strap these Aeromotive 340 Stealth fuel cells in, hook up your lines and wires, and you're done." This is a massive time saver, especially for DIY builders who want to avoid fabrication work.

2. Consistent Fuel Delivery Under Extreme Conditions

A 20-gallon capacity gives you enough fuel for extended driving sessions, road racing stints, or multiple drag strip passes. But capacity alone isn't enough. The real performance gains come from the internal baffling system. Aeromotive's Stealth fuel cells feature an "innovative baffling system inside of the cells" that ensures "the fuel pump inlet always has a constant column of fuel," even during extreme driving conditions like hard cornering, braking, and acceleration. This baffling prevents fuel slosh from starving the pump, which is a common cause of engine stumbles or complete power loss in high-g situations.

3. Quieter, Cooler, and Longer-Lasting Pump Operation

Because the fuel pump is mounted inside the cell and submerged in fuel, it runs significantly cooler and quieter than an externally mounted pump. Aeromotive states that "the pump is inside of the cells, so noise is drastically reduced, and the fuel pump runs cooler longer, ensuring longevity and drivability." The fuel itself acts as a coolant and sound damper, which is a major advantage for street-driven race cars where cabin noise matters.

Top Options for a 20 Gallon Fuel Cell With Pump

Based on the search results, there are several distinct product families from Aeromotive, each designed for a different power level and budget. Here are the most relevant models:

Aeromotive A1000 Stealth 20 Gallon Fuel Cell (Part #18661)

This is the original Stealth fuel cell that has been a staple in the aftermarket for years. It features a built-in Aeromotive A1000 fuel pump (part number 11101), which is a gear-type pump known for its reliability and flow capacity. It includes a 100-micron stainless steel pre-filter and a 0-90 ohm sending unit. The flow rate is listed at 100 gallons per hour (380 liters per hour). Note that one retailer specifically advises, "If running e85, consider P/N 18661," suggesting this model is well-suited for ethanol-based fuels.

  • Outlet Fitting: -10 AN
  • Vent & Return Fitting: -8 AN
  • Dimensions: 24" L x 20" W x 10" H
  • Pump Type: Brushed gear pump (A1000)

Aeromotive 340 Stealth 20 Gallon Fuel Cell (Part #18665)

This is the newer, more popular version that uses the Aeromotive 340 Stealth fuel pump (part number 11540). The 340 pump is a turbine-impeller style pump that offers a flow rate of 90 gallons per hour (340 liters per hour) and is capable of supporting up to 700 horsepower on forced-induction EFI engines and up to 1,000 horsepower on naturally aspirated carbureted engines. It also features an ORB-08 outlet port, AN-08 male return line, and dual AN-08 vents with roll-over valves.

  • Outlet Fitting: ORB-08
  • Vent & Return Fitting: -8 AN
  • Dimensions: 24" L x 20" W x 10" H
  • Pump Type: Brushed turbine (340 Stealth)

Aeromotive Eliminator Stealth 20 Gallon Fuel Cell (Part #18663)

For those building extreme big-power engines, the Eliminator version is the right choice. This cell uses the Aeromotive Eliminator fuel pump (part number 11104), which is capable of supporting up to 1,900 horsepower on naturally aspirated fuel-injected engines and up to 2,300 horsepower on naturally aspirated carbureted engines. It features a larger ORB-10 outlet port to handle the higher flow demands.

  • Outlet Fitting: ORB-10
  • Vent & Return Fitting: -8 AN
  • Dimensions: 24" L x 20" W x 10" H
  • Pump Type: Brushed gear pump (Eliminator)

Aeromotive Brushless Stealth Fuel Cells (Part #18373 & #18371)

Aeromotive has also introduced a line of brushless fuel cells that represent the cutting edge of fuel pump technology. The 5.0 Brushless Stealth Cell (part number 18373) delivers a staggering 5 gallons per minute and is capable of supporting up to 3,400 flywheel horsepower on naturally aspirated fuel-injected engines. The 3.5 Brushless Stealth Cell (part number 18371) outputs 3.5 gallons per minute and supports up to 2,400 flywheel horsepower on naturally aspirated fuel-injected engines. These brushless pumps feature spur-gear pumping mechanisms, integral external controllers, and are designed to handle continuous operating pressures up to 90 PSI and peak pressures up to 150 PSI. They are also compatible with E85 and methanol.

  • Outlet Fitting: ORB-10
  • Dimensions: 20" W x 24" L x 10" H
  • Pump Type: Brushless spur gear
  • Key Feature: Variable speed capable (upgradeable with retrofit kit)

How to Install a 20 Gallon Fuel Cell With Pump

While the integrated pump makes installation drastically simpler than a traditional external pump setup, there are still critical steps you must follow to ensure safety and performance.

1. Mounting the Cell Securely

The fuel cell must be mounted on a flat, solid surface. Most 20-gallon cells measure 24 inches long, 20 inches wide, and 10 inches tall. Use properly rated steel mounting straps that wrap around the cell and are bolted to the vehicle's frame or roll cage. The cell should be isolated from the frame using rubber or polyurethane bushings to reduce vibration. Note that "all tanks must be rubber mounted to isolate from vibration."

2. Connecting Fuel Lines

Use high-quality, fuel-resistant hose. For ethanol blends like E85, ensure the hose is rated specifically for ethanol compatibility. Connect the outlet of the pump to your engine's fuel rail or carburetor using the appropriate AN fitting size (typically -8 AN or -10 AN, depending on your pump). The return line connects from your fuel pressure regulator back to the cell's -8 AN return fitting. Secure every connection with stainless steel clamps or proper AN wrenches. According to installation guides, "tightening fittings or replacing damaged components" and ensuring "all connections are torqued to the manufacturer's specifications" is essential for a leak-free system.

3. Wiring the Fuel Pump

Each Aeromotive Stealth fuel cell comes with a three-terminal stud for electrical connections: positive (+), negative (-), and ground. You must run a dedicated power wire from the battery through a 30-amp relay (minimum) to the pump, controlled by the ignition switch or a fuel pump safety switch. Do not run the pump through a pulse-width modulated (PWM) controller unless the pump is specifically designed for it. The brushless models explicitly state they are "not compatible with pulse modulated systems or fuel pump speed controllers."

4. Venting the Cell

The cells come with two -8 AN rollover valves. These must be connected to vent lines that run to a safe location outside the vehicle, typically down toward the ground or to a catch can. The rollover valves automatically close if the vehicle flips, preventing fuel spillage.

5. Testing for Leaks

Before starting the engine, fill the cell with fuel and pressurize the system by turning the pump on (but not starting the engine). Use a spray bottle with soapy water to check all connections, fittings, and the lid gasket for bubbles. "Bubbles forming at any point indicate a leak, even if fuel is not visibly escaping."

How to Choose the Right Pump for Your Application

Selecting between the A1000, 340, Eliminator, or Brushless pumps depends entirely on your engine type, fuel type, and horsepower target.

For Carbureted Engines (Gasoline):

  • Up to 1,000 HP: The 340 Stealth pump is a great match.
  • Up to 1,700 HP (forced induction) or 2,300 HP (naturally aspirated): The Eliminator pump is the better choice.
  • Over 2,000 HP: Step up to the 3.5 or 5.0 Brushless pumps.

For EFI Engines (Gasoline):

  • Up to 850 HP (naturally aspirated) or 700 HP (forced induction): The 340 Stealth pump works well.
  • Up to 1,900 HP (naturally aspirated) or 1,400 HP (forced induction): The Eliminator pump is recommended.
  • Up to 3,400 HP (naturally aspirated) or 2,600 HP (forced induction): The 5.0 Brushless pump is your best bet.

For E85 or Methanol Engines:
Ethanol and methanol are harder on fuel pumps and require higher flow rates due to their lower energy density. The A1000 pump is explicitly recommended for E85 applications. The brushless pumps are also rated for E85 and methanol, with extended service life noted in their product descriptions. Plan on approximately 30% more flow capacity than you would need for gasoline.

Pros and Cons of a 20 Gallon Fuel Cell With Pump

Pros:

  • All-in-one convenience: Eliminates the need to piece together a pump, filter, sending unit, and cell separately.
  • Simplified installation: No drilling, tapping, or welding required.
  • Baffled design: Prevents fuel starvation during aggressive driving.
  • Cooler pump operation: Submerged pump runs cooler and lasts longer.
  • Reduced noise: Internal mounting makes the pump quieter than external alternatives.
  • Universal fit: The 24" x 20" x 10" footprint fits a wide variety of vehicles.

Cons:

  • Higher initial cost: An integrated cell costs more upfront than a bare cell plus a basic pump.
  • Limited pump upgrade options: You cannot easily swap in a different brand or model of pump without modifying the cell.
  • Weight: 20 gallons of fuel plus the aluminum cell weighs around 140-150 pounds when full, which can affect vehicle balance.
  • Not legal for street use in California: Many of these cells are "not legal for sale or use on emission-controlled vehicles" in California and other states with similar regulations.

Why You Should Consider KEMSO Fuel Pumps for Your Project

When it comes to high-performance fuel pumps that are engineered for reliability and longevity, KEMSO stands out as a brand that delivers genuine value. While Aeromotive cells are excellent for full-race applications, many enthusiasts and shop owners need a fuel pump that can handle daily driving, weekend racing, and everything in between—without breaking the bank.

KEMSO fuel pumps are built as high-performance, OEM replacement units that are designed to meet or exceed original equipment specifications. They are rigorously tested for flow rate, pressure consistency, and durability. Whether you are restoring a classic car, upgrading a modern performance vehicle, or building a dedicated race car, KEMSO offers a pump solution that fits.

Key advantages of choosing KEMSO:

1. High-Performance Engineering
KEMSO fuel pumps are manufactured with precision tolerances to ensure consistent fuel pressure and volume. They are compatible with a wide range of fuels, including gasoline and ethanol blends, making them versatile for various performance builds.

2. OEM Replacement Fitment
KEMSO specializes in drop-in replacement fuel pumps for a vast array of vehicles. If you need a pump for a specific make and model—from Subaru Impreza to Ducati motorcycles to Can-Am off-road vehicles—KEMSO likely has a direct-fit solution that eliminates guesswork and modification.

3. Lifetime Warranty
Perhaps the most compelling reason to choose KEMSO is their lifetime warranty. This is a rare and powerful commitment in the automotive aftermarket. It means that once you install a KEMSO fuel pump, the manufacturer stands behind its quality for as long as you own the product. This kind of guarantee saves you money and gives you peace of mind on every drive.

4. Affordable Pricing
KEMSO offers genuine high-performance fuel pumps at a fraction of the cost of many premium racing brands. With regular prices around $79.98 for a wide range of applications, these pumps make quality fuel delivery accessible to more builders and drivers.

5. Easy Online Ordering and Fast Support
KEMSO's website is designed for straightforward shopping. You can browse by vehicle type, check warranty details, and read the blog for helpful installation guides and cost breakdowns. Their customer support team is located in Houston, Texas, and is ready to help with fitment questions.

Visit KEMSO today to find the perfect fuel pump for your vehicle:

👉 https://www.kemsoracing.com/

Final Thoughts

A 20 gallon fuel cell with pump is the most practical and performance-oriented solution for anyone building a high-horsepower vehicle. The integrated design saves countless hours of fabrication time, reduces the number of potential leak points, and ensures the pump stays cool and fed with fuel even during the most aggressive driving. Whether you choose the Aeromotive A1000, the 340 Stealth, the Eliminator, or one of the new brushless models, you are getting a professionally engineered system that will serve you well for years.

For those who prefer a reliable, affordable, and warrantied alternative for their fuel pump needs—whether as a replacement or a standalone upgrade—KEMSO is a brand you can trust. Their lifetime warranty, OEM fitment, and high-performance standards make them a smart choice for any build.

For more information on KEMSO fuel pumps and to view their full product line, visit:
https://www.kemsoracing.com/


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