Evil Energy Complete Fuel System Kit with Black Fuel Cell, Dual Fuel Pumps, AN Fittings, Hoses, Filters and Accessories
EVIL ENERGY fuel system installation diagram showing fuel cell, 100 micron pre-filter, inline fuel pump, 10 micron post-filter, and fuel pressure regulator.
EVIL ENERGY fuel cell tank with anti-slosh foam, paired with adjustable fuel pressure regulator for EFI systems and optimized fuel delivery.
EVIL ENERGY 300LPH external inline fuel pump and dual-stage inline fuel filter with 10 micron and 100 micron elements, featuring removable design and mounting brackets.
EVIL ENERGY Fuel Cell Tank Kit-Efficient Fuel System Solutions 5/10/15 Gallon - EVILENERGY
Evil Energy Fuel Pump Installation Tips showing positive and negative terminals, M12 and M18 fittings, 6AN outlet and 10AN inlet adapters
Evil Energy Fuel System Installation Diagram showing fuel tank, dual pumps, 10 and 100 micron filters, and mounting brackets
Stainless Steel Filter Element
Capture contaminants and particles.
[15 Gallon]Evil Energy 15 Gallon Black Fuel Cell with dimensions 19.88-inchx17.91-inchx10.03-inch and mounting flange measurements
Evil Energy Aluminum Tube Product Size 3/8 inch OD, 0.32 inch ID, 25FT length with 0.05 inch wall thickness
Evil Energy Fuel System Wide Application showing evaporator, compressor, gas transmission, and fuel system installation
Evil Energy Fuel Line with 500psi working pressure, 1400psi burst pressure, temperature range -58°F to 240°F
Evil Energy 1060 Aluminum Tube Features showing thermal conductivity, light weight, flexibility, corrosion resistance, ASTM B210 standard
Collage of happy EVIL ENERGY customers holding fuel system kits, showcasing product boxes and installations with the caption '500,000+ Raving Fans!'
Evil Energy Fuel Filter Built to Last with stainless steel filter element, aluminum housing, O-ring seal, and inlet/outlet fittings
EVIL ENERGY Inline Fuel Filter with 6AN 8AN 10AN Adapter&Bracket Clamp 60,50MM Universal Kit - EVILENERGY
Evil Energy Fuel Filter Size Comparison 10 Micron and 100 Micron with 1.96 inch OD and 0.81 inch ID
Evil Energy Stainless Steel Fuel Filter Element showing contaminant capture and reusable maintenance
Evil Energy Fuel Filter Flow Direction Illustration for optimal filtration and filter maintenance
Evil Energy Fuel Pressure Regulator with Gauge installed on fuel system showing compressive, shockproof, and protective features

EVIL ENERGY Upgraded Aluminum Fuel Line Kits-Efficient Fuel System Solutions 15 Gallon

$499.99
$499.99
$634.99
Capacity: 15 Gallon
SKU: EVFS26061001
Product Type: Fuel Cell Tank Kits

The EVIL ENERGY 15 Gallon Fuel Cell fits most custom builds with at least 19.88 × 17.91 × 10.03 inches of available space for secure mounting and plumbing. Its internal safety foam controls fuel slosh, supports steadier fuel delivery, and helps reduce fuel movement during impacts. Ideal for racing, drifting, and long-distance builds.

Evil Energy Complete Fuel System Kit with Black Fuel Cell, Dual Fuel Pumps, AN Fittings, Hoses, Filters and Accessories

EVIL ENERGY Upgraded Aluminum Fuel Line Kits-Efficient Fuel System Solutions 15 Gallon

$499.99 $634.99
$499.99 $634.99

EVIL ENERGY Upgraded Aluminum Fuel Line Kits-Efficient Fuel System Solutions 15 Gallon

$499.99 $634.99
Capacity: 15 Gallon

EVIL ENERGY 15 Gallon Fuel Cell Kit Specifications

Brand EVIL ENERGY
Product Type Universal 15 Gallon Fuel Cell and Fuel Delivery Kit
Application Universal auxiliary fuel system for racing, drifting, long-distance driving, engine swaps, restorations, and custom builds.
Fitment Requirements Vehicle-specific fitment is not required. Installation is possible when the vehicle has sufficient space for the 19.88 × 17.91 × 10.03-inch tank, mounting tabs, fuel lines, ventilation, and service access. Custom mounting, plumbing, and wiring are required.
Color Black
Fuel Cell Capacity 15 gallons
Fuel Cell Dimensions 19.88 × 17.91 × 10.03 inches (L × W × H)
Fuel Cell Mounting Tab Length 3.64 inches
Fuel Cell Construction TIG-welded aluminum alloy body with reinforced seams and corners; wall thickness greater than 2 mm.
Fuel Cell Outlets AN-10 fittings
Fuel Cell Level Sender Built-in 3–90 ohm fuel level sending unit for continuous fuel-level monitoring. Confirm gauge compatibility before installation.
Fuel Cell Internal Safety Foam Internal anti-slosh foam helps control fuel movement, reduce sudden weight transfer, and support steadier fuel delivery during acceleration, braking, cornering, and impacts. Confirm foam compatibility with the fuel being used.
AN Fitting Material Aerospace-grade 6061-T6 aluminum for durable, lightweight, corrosion-resistant fuel-line connections.
Fuel Pump 12-volt external inline electric fuel pump rated at 300 LPH
Fuel Pressure Regulator Adjustable 20–120 PSI fuel pressure regulator
Fuel Filter 100-micron pre-pump filter for larger contaminants and 10-micron post-pump filter for finer filtration.
Aluminum Fuel Line Material 1060-grade aluminum compliant with ASTM B210
Aluminum Fuel Line Size 3/8-inch (9.5 mm) outside diameter and 0.32-inch (8.1 mm) inside diameter
Aluminum Fuel Line Length 25 feet (7.62 meters)
Aluminum Fuel Line Wall Thickness 0.05 inch (1.4 mm)
Package Contents
  • 1 × 15-gallon aluminum fuel cell
  • 1 × adjustable 20–120 PSI fuel pressure regulator
  • 1 × 300 LPH external inline electric fuel pump
  • 1 × 6AN to M18 × 1.5 fitting adapter
  • 1 × M12 × 1.5 to 6AN fitting adapter
  • 1 × 60 mm fuel filter mounting bracket
  • 1 × AN6 to 3/8-inch aluminum hard-line kit
  • 2 × AN10 to AN6 male flare reducer adapters
  • 1 × 100-micron inline fuel filter with 6AN, 8AN, and 10AN adapters
  • 1 × 10-micron inline fuel filter with 6AN, 8AN, and 10AN adapters
  • 4 × 6AN male to 3/8-inch hard-line straight adapter fittings
  • 2 × 6AN male to 3/8-inch hard-line adapter fitting sets
Installation Notice Measure the intended installation area before ordering. Confirm mounting strength, plumbing clearance, fuel compatibility, gauge resistance range, ventilation, electrical requirements, and compliance with local vehicle modification regulations.


Tips for taking the cap off:

The EVIL ENERGY 15 Gallon Fuel Cell provides additional fuel capacity for racing, drifting, long-distance driving, and custom builds. This universal aluminum fuel cell measures 19.88 × 17.91 × 10.03 inches (L × W × H) and features 3.64-inch mounting tabs. If your vehicle has sufficient space for the tank and adequate clearance for secure mounting, fuel lines, and ventilation, this fuel cell is worth considering. It features TIG-welded aluminum construction with walls over 2 mm thick, reinforced seams and corners, AN10 outlets, anti-slosh foam, and a built-in 3–90-ohm fuel level sender. AN fittings made from aerospace-grade 6061-T6 aluminum provide secure, durable connections. Before installation, verify mounting strength, fuel compatibility, ventilation, and compliance with local vehicle modification requirements.

EVIL ENERGY 15 gallon aluminum fuel cell for racing, long-distance driving, and custom fuel system builds

EVIL ENERGY 15 Gallon Fuel Cell Kit Component Guide

Complete Fuel System Solution for Custom Builds

Building a custom fuel system usually requires matching the fuel tank, fuel pump, fuel filters, fuel pressure regulator, fuel line, and fittings. This EVIL ENERGY Fuel Cell kit combines the main fuel-delivery components for racing, drifting, long-distance projects, engine swaps, restorations, and other custom builds.

The universal 15 Gallon Fuel Cell is not designed for one specific vehicle. It may be considered when the vehicle has sufficient installation space, secure mounting points, plumbing clearance, ventilation, and service access. Custom mounting, wiring, and fuel-line routing are required.

Recommended Fuel System Flow

A typical external electric fuel pump, return-style EFI fuel system follows this flow:

15 Gallon Fuel Cell → 100-Micron Fuel Filter → 12V Inline Fuel Pump → 10-Micron Fuel Filter → Fuel Rail and Injectors → Fuel Pressure Regulator → Return Line → Fuel Cell

The exact position of the Fuel Pressure Regulator may vary with the fuel rail, regulator type, and system design. Follow the instructions supplied by the engine, fuel rail, and regulator manufacturers.

Fitment and Installation Requirements

This EVIL ENERGY 15 Gallon Fuel Cell Kit is a universal custom-installation system, not a vehicle-specific direct-fit replacement. Vehicle make and model alone do not determine fitment. Installation may be considered when the vehicle provides sufficient space, structural support, plumbing clearance, ventilation, and electrical access.

Fitment Checklist

Before ordering, verify the following requirements:

  • 15 Gallon Fuel cell clearance: Space for the 19.88 × 17.91 × 10.03-inch tank, fittings, fuel lines, ventilation, and service access
  • Mounting provisions: Adequate structural support and access to the 3.64-inch mounting tabs
  • Fuel-line routing: Suitable paths for the feed, return, and ventilation lines
  • Engine requirements: Required fuel flow, base pressure, injector demand, and EFI configuration
  • Electrical requirements: Appropriate wiring, fuse, relay, power supply, and grounding for the 12V Inline Fuel Pump
  • Fuel gauge compatibility: A gauge that supports the built-in 3–90-ohm fuel level sender
  • Legal requirements: Compliance with local vehicle modification, road-use, and motorsport regulations

Hard Line, CPE, and PTFE Fuel Lines

The kit includes 3/8-inch aluminum hard line. Properly rated CPE or PTFE fuel lines may be added where flexible connections are required, but flexible hose is not included. CPE and PTFE hose use different construction and may require different hose ends.

  • Match each hose type with its specified hose ends.
  • Verify line size, pressure rating, temperature rating, and bend radius.
  • Use flexible sections where engine or chassis movement may occur.
  • Do not reuse incompatible hard-line or hose fittings.

6061-T6 Aluminum AN Fittings

Selected AN fittings and adapters are precision-machined from aerospace-grade 6061-T6 aluminum. This material provides a lightweight and corrosion-resistant connection for compatible automotive fuel-system applications.

Correct fitting selection and installation help reduce the risk of fuel seepage and pressure loss. Verify the AN size, thread type, flare surface, tube or hose specification, and required sealing method. AN fittings seal at the flare surface, so thread sealant should not be applied to the AN flare.

Fuel Compatibility

The complete EVIL ENERGY 15 Gallon Fuel Cell Kit is compatible with the following fuels:

  • Gasoline and pump gas
  • Diesel fuel
  • Methanol
  • Compatible race fuels

Fuel compatibility applies to the included fuel cell, internal anti-slosh foam, fuel pump, fuel filters, fuel pressure regulator, seals, aluminum hard line, AN fittings, adapters, and O-rings.

Any separately purchased hose, fitting, or replacement component must also be rated for the selected fuel.

EVIL ENERGY fuel cell gas tank supports gasoline, diesel, biodiesel, oils, grease, water, air, racing gas, and vacuum. E85, methanol, and ethanol are only compatible when used with PTFE fuel lines, and not suitable with CPE fuel lines.

Installation and System Testing

  • Secure the 15 Gallon fuel cell to a suitable structural mounting surface.
  • Install each electric fuel pump and filter according to its marked flow direction.
  • Keep fuel components away from exhaust heat and moving parts.
  • Support hard lines with suitable clamps to control vibration.
  • Provide correct tank ventilation for the selected system layout.
  • Check the electrical wiring, fuse, relay, and ground before operation.
  • Pressure-test the completed system before starting or driving the vehicle.
  • Inspect every connection for fuel seepage or pressure loss.

Installation and testing should be performed by someone familiar with automotive fuel plumbing. Stop using the system immediately if leakage, damaged wiring, abnormal pump noise, unstable pressure, or other unsafe conditions are found.

Why Choose EVIL ENERGY?

EVIL ENERGY develops practical, cost-effective automotive components for DIY builders, performance enthusiasts, and repair users. Our fuel-system range includes 15-gallon fuel cells, fuel lines, AN fittings, adapters, inline fuel filters, fuel pumps, pressure regulators, and related installation components.

  • Complete Fuel-System Options: Coordinated components help reduce the time and guesswork involved in sourcing individual parts for custom fuel-system projects.
  • Built for Custom Applications: Suitable for racing, drifting, engine swaps, restorations, classic trucks, and other performance builds when the specifications match the vehicle and fuel-system requirements.
  • Practical Installation Support: Detailed specifications help users verify dimensions, pressure range, fitting sizes, wiring, and system compatibility before installation.
  • 1-Year Limited Warranty: This EVIL ENERGY fuel system kit is covered by a 1-year limited warranty. For a suspected product quality issue, contact customer support with the order number and relevant photos or videos for evaluation.

Customer Support

For product specifications, fitment guidance, installation questions, warranty assistance, or return support, contact support@ievilenergy.com. Please include your order number and relevant photos or videos when applicable.

Warranty, return, and price-protection eligibility is subject to the applicable policy terms. EVIL ENERGY may update these policies in accordance with applicable laws and regulations.

EVIL ENERGY Fuel Cell Kit with AN fittings, fuel level sender, and mounting brackets for drag racing, LS engine swaps, and custom fuel systems.

What’s Included in the EVIL ENERGY 15 Gallon Fuel Cell Kit

1. EVIL ENERGY 15 Gallon Aluminum Fuel Cell

The EVIL ENERGY 15 Gallon Fuel Cell Kit combines an aluminum fuel cell, 300LPH external fuel pump, dual-stage filtration, adjustable 20–120 PSI regulator, 3/8-inch aluminum hard line, and AN fittings for custom return-style EFI fuel systems. The universal fuel cell measures 19.88 × 17.91 × 10.03 inches (L × W × H). Custom mounting, plumbing, ventilation, and wiring are required.

Reinforced Aluminum Construction

The 15-gallon fuel cell is manufactured from aluminum alloy with walls over 2 mm thick. TIG-welded seams, reinforced corners, and mounting tabs create a rigid enclosure for demanding custom and motorsport applications.

  • Inspect the tank and mounting tabs for damage before installation.
  • Secure the mounting tabs to a structurally suitable surface.
  • Inspect the tank, welds, and connections for leakage before use.

Internal Anti-Slosh Foam

Internal anti-slosh foam helps limit fuel movement inside the tank during:

  • Acceleration
  • Braking
  • Cornering

Controlling fuel movement can support steadier fuel pickup and reduce sudden changes in fuel weight distribution. The foam does not eliminate vapor lock or replace correct fuel-system ventilation. Confirm compatibility between the internal foam and the intended fuel before filling the tank.

AN10 Outlets and Fuel Level Monitoring

  • AN10 outlets: Connect to the supplied fuel-system adapters.
  • 3–90-ohm sender: Provides continuous fuel-level monitoring when connected to a compatible gauge.
  • Yellow wire: Ground wire.
  • Green wire: Signal wire connected to the gauge sender input.

2. Dual-Stage Inline Fuel Filter System

The EVIL ENERGY fuel system kit includes two Inline Fuel Filters that filter contaminants at different stages of fuel delivery. The 100-Micron Fuel Filter is installed before the electric fuel pump, while the 10-Micron Fuel Filter is installed after the electric fuel pump.

100-Micron Pre-Pump Inline Fuel Filter

The 100-Micron Pre-Pump Inline Fuel Filter captures larger particles before fuel enters the 12V Inline Fuel Pump. This helps reduce contamination-related electric fuel pump wear while avoiding the excessive inlet restriction that may be caused by an overly fine pre-pump filter.

  • Installation position: Between the 15-gallon fuel cell and fuel pump
  • Filtration rating: 100 microns
  • Primary purpose: Protects the electric fuel pump from larger debris
  • Flow direction: Follow the arrow marked on the filter body
Fuel system layout showing a 100-micron pre-pump filter, external inline fuel pump, and 10-micron post-pump filter

10-Micron Post-Pump Inline Fuel Filter

The 10-Micron Post-Pump Inline Fuel Filter removes smaller contaminants after fuel exits the 300LPH Inline Fuel Pump. This finer filtration stage helps protect the fuel rail, injectors, and other precision EFI components.

  • Installation position: After the fuel pump
  • Filtration rating: 10 microns
  • Primary purpose: Provides finer filtration before fuel reaches the engine
  • Flow direction: Follow the arrow marked on the filter body
Inline fuel filter element installation showing the closed end positioned against the spring

3. 12V 300LPH External Inline Fuel Pump

The 12V Inline Fuel Pump moves fuel from the EVIL ENERGY 15 Gallon Fuel Cell toward the engine. Its external design supports flexible placement in custom return-style EFI fuel systems for racing, drifting, classic trucks, engine swaps, restorations, and other performance builds.

300LPH Rated Fuel Flow

The 300LPH Inline Fuel Pump is rated for flow up to 300 liters per hour under specified test conditions. The rating describes pump flow capacity and does not mean the electric fuel pump will deliver 300 LPH under every operating condition.

Fuel Pump Specifications

  • Pump type: External inline electric fuel pump
  • Operating voltage: 12V DC
  • Rated flow: Up to 300 liters per hour
  • Recommended system: Compatible return-style EFI fuel systems
  • Applications: Racing, drifting, classic trucks, engine swaps, restorations, and custom builds

Factors That Affect Actual Fuel Delivery

Actual electric fuel pump output depends on the operating conditions and complete fuel system, including:

  • Fuel pressure
  • Supply voltage and wiring condition
  • Fuel type and temperature
  • Fuel-line diameter and length
  • Filter, fitting, and adapter restrictions
  • Height and distance between the 15-gallon fuel cell and electric fuel pump
  • Overall feed and return-line layout

Installation Guidelines

  • Mount the electric fuel pump below or near the 15-gallon fuel cell when possible.
  • Follow the flow-direction marking on the inline fuel pump body.
  • Secure the electric fuel pump to a stable mounting surface.
  • Keep the inline fuel pump away from exhaust heat, moving parts, road debris, and impact areas.
  • Install the 100-micron pre-filter before the fuel pump.
  • Install the 10-micron post-filter after the fuel pump.
  • Use appropriately sized wiring, a suitable fuse and relay, and a secure ground.

EVIL ENERGY inline fuel pump installed below fuel tank for gravity-fed fuel delivery system.

4. Adjustable 20–120 PSI Fuel Pressure Regulator

The adjustable Fuel Pressure Regulator controls fuel pressure in compatible return-style EFI systems. Its 20–120 PSI adjustment range allows the base pressure to be set according to the requirements of the engine, fuel injectors, fuel rail, and engine management system.

How the Fuel Pressure Regulator Works

The 12V Inline Fuel Pump creates fuel flow through the system. The regulator maintains the selected pressure by directing excess fuel through the return line and back to the EVIL ENERGY 15 Gallon Fuel Cell. The regulator controls pressure; it does not create fuel flow.

Fuel Pressure Regulator Specifications

  • Regulator type: Adjustable bypass fuel pressure regulator
  • Adjustment range: 20–120 PSI
  • Recommended system: Compatible return-style EFI fuel systems
  • Primary function: Maintains the selected system pressure
  • Return function: Routes excess fuel back to the 15-gallon fuel cell

Compatibility Requirements

Before installation, verify the regulator's port sizes, pressure range, return-line requirements, fuel compatibility, and relationship to the fuel rail and injectors. This regulator should not be assumed to support conventional low-pressure carbureted systems.

Adjustable fuel pressure regulator with ORB-06 inlet/outlet and return ports, 30-70 PSI range, vacuum/boost line fitting, and 1/8 NPT gauge port.

5. 3/8-Inch 1060 Aluminum Hard Line and AN Fittings

The EVIL ENERGY 1060 Aluminum Fuel Line Kit includes 25 feet of 3/8-inch aluminum hard line for custom fuel routing. Its lightweight, bendable construction allows the line to be shaped around the chassis in engine swaps, restorations, racing vehicles, classic trucks, and other custom fuel-system projects.

Aluminum Hard-Line Specifications

  • Material: 1060-grade aluminum manufactured to ASTM B210 specifications
  • Length: 25 feet (7.62 meters)
  • Outside diameter: 3/8 inch (9.5 mm)
  • Inside diameter: 0.32 inch (8.1 mm)
  • Wall thickness: 0.05 inch (1.4 mm)
  • Maximum working pressure: 700 PSI
  • Burst pressure: 2,000 PSI

The pressure ratings apply under specified test conditions. Actual suitability depends on operating pressure, fluid temperature, vibration, installation method, fitting selection, and fluid compatibility.

1060 aluminum fuel line showing bendability, lightweight construction, thermal conductivity, and corrosion resistance

AN10-to-AN6 Fuel System Connections

The supplied adapters connect the AN10 outlets on the EVIL ENERGY 15 Gallon Fuel Cell to the AN6 fuel-delivery components and 3/8-inch aluminum hard line. Selected AN fittings are manufactured from aerospace-grade 6061-T6 aluminum for lightweight, corrosion-resistant connections.

Hard-Line Installation Tools

The aluminum fuel line kit includes tools for measuring, shaping, cutting, and preparing the line:

  • Tube cutter: Creates a controlled cut in the aluminum line
  • Tube bender: Helps form bends without flattening or kinking the line
  • Deburring tool: Removes sharp edges and debris after cutting

Installation Guidelines

  • Plan the complete fuel-line route before cutting or bending.
  • Deburr and clean every cut before installing the fittings.
  • Avoid sharp bends, kinks, and flattened sections.
  • Use suitable clamps to support the line and control vibration.
  • Keep the line away from exhaust heat, moving parts, and impact areas.
  • Leave appropriate flexible sections where engine or chassis movement occurs.
  • Pressure-test the completed system and inspect every connection for leakage.
Aluminum fuel line installation steps showing bending, cutting, deburring, and fitting assembly

PTFE Fuel Lines and Flexible Connections

Properly rated PTFE fuel lines may be added where flexible connections are required, but PTFE hose is not included with this kit. PTFE, CPE, and aluminum hard line require compatible fittings and must not be connected using mismatched hose ends.

AN Fitting Installation

AN fittings seal at the 37-degree flare surface rather than at the threads. Verify the AN size, thread type, flare condition, tube dimensions, and sealing method at every connection. Do not apply thread sealant to an AN flare-sealing surface.

EVIL ENERGY Fuel Cell Kit installed in various high-pressure, high-temperature automotive engine applications.Fitment and Installation Requirements

This is a universal custom-installation kit, not a vehicle-specific direct-fit replacement. Before ordering, verify tank clearance, structural mounting strength, feed and return-line routing, ventilation, engine fuel demand, gauge compatibility, electrical requirements, fuel compatibility, and local vehicle modification regulations.

Installation and pressure testing should be performed by someone familiar with automotive fuel systems. Inspect all connections for leakage before operating the vehicle.

Brand Summary

Policy Details
Cancellation Policy Orders can be canceled within 48 hours of placement. Refund processed in 3-5 business days.
Returns Policy Returns accepted within 180 days. Full refund within 90 days; 15% fee for 90-180 days.
Non-Returnable Items Only regular-priced items are eligible for refunds; sale items are non-refundable.
Refund Processing If no refund received, check your bank/credit card. For ongoing issues, contact support@ievilenergy.com.

Return Reasons

  1. Quality Issues: Provide photos/videos; we cover return shipping.
  2. Wrong Item Ordered: Buyer covers return shipping; email within 30 days.
  3. Change of Mind: Buyer covers return shipping; email within 30 days.
  4. Shipping Damage: Inspect packages; do not sign for damaged items.
  5. Incorrect Item Shipped: Contact within 7 days.

Price Protection Policy

Effective from August 25, 2024. Price drops within 7 days of purchase can be claimed.

Disclaimer

EVIL ENERGY reserves the right to interpret, modify, or terminate this policy in accordance with applicable laws and regulations.

If you need further information or assistance, feel free to ask!

Product Videos

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Q: What is the EVIL ENERGY 15 Gallon Fuel Cell used for?
A: The EVIL ENERGY 15 Gallon Fuel Cell is designed for racing, drifting, engine swaps, restorations, long-distance driving, and custom fuel system builds. It provides extra fuel capacity and supports a return-style fuel delivery setup when properly installed with the included pump, filters, regulator, fuel line, and AN fittings.

Q: Is this a universal Fuel Cell 15 Gallon kit?
A: Yes. This Fuel Cell 15 Gallon kit is a universal custom-installation system, not a vehicle-specific direct-fit replacement. Before ordering, measure your installation area and confirm space for the tank, mounting tabs, fuel lines, ventilation, wiring, and service access.

Q: What is included in the EVIL ENERGY Fuel Cell Kit?
A: The EVIL ENERGY Fuel Cell Kit includes a 15 gallon aluminum fuel cell, 12V Inline Fuel Pump, 100-Micron Fuel Filter, 10-Micron Fuel Filter, 20–120 PSI Fuel Pressure Regulator, 3/8-inch aluminum hard line, AN fittings, adapters, brackets, and related fuel delivery components.

Q: How does an automotive fuel cell work?
A: An automotive fuel cell stores fuel and helps deliver it to the engine through a fuel pump, filters, fuel lines, regulator, and return system. This EVIL ENERGY Fuel Cell uses an aluminum tank with internal anti-slosh foam to help control fuel movement during acceleration, braking, and cornering.

Q: What is the difference between an automotive fuel cell and a hydrogen fuel cell?
A: An automotive fuel cell, in this product context, is a liquid fuel tank used for gasoline, diesel, methanol, or compatible race fuel applications. A hydrogen fuel cell is a different technology that creates electricity through a chemical reaction.

Q: Is this 15 Gallon Fuel Cell good for S10 trucks?
A: This 15 Gallon Fuel Cell can be used in many S10 truck builds if there is enough space for secure mounting, fuel-line routing, ventilation, and service access. For S10 LS swaps, turbo builds, drag trucks, and custom bed-mounted fuel systems, always confirm the tank dimensions and installation layout before ordering.

Q: What size is the EVIL ENERGY 15 Gallon Fuel Cell?
A: The EVIL ENERGY 15 Gallon Fuel Cell measures 19.88 × 17.91 × 10.03 inches. The tank also includes mounting tabs, so the full installation area should allow space for the tank body, fittings, lines, venting, and maintenance access.

Q: Is this Fuel Cell Kit for EFI or carbureted engines?
A: This Fuel Cell Kit is mainly designed for compatible return-style EFI fuel systems. It includes a 12V Inline Fuel Pump and a 20–120 PSI Fuel Pressure Regulator. It should not be assumed to work with a low-pressure carbureted system unless the full fuel-pressure and regulator setup is verified.

Q: What is the recommended fuel system flow order?
A: A typical setup is: 15 Gallon Fuel Cell → 100-Micron Fuel Filter → 12V Inline Fuel Pump → 10-Micron Fuel Filter → fuel rail or injectors → 20–120 PSI Fuel Pressure Regulator → return line → fuel cell. The final layout may vary depending on the engine, fuel rail, regulator type, and return-line design.

Q: Where should the 100-Micron Fuel Filter be installed?
A: The 100-Micron Fuel Filter should be installed before the fuel pump. It captures larger debris before fuel enters the pump and helps protect the 12v electric fuel pump without creating excessive inlet restriction.

Q: Where should the 10-Micron Fuel Filter be installed?
A: The 10-Micron Fuel Filter should be installed after the pump. It provides finer filtration before fuel reaches the fuel rail, injectors, or other precision EFI components.

Q: Can I install the 10-Micron Fuel Filter before the fuel pump?
A: It is not recommended for this kit. A fine 10-Micron Fuel Filter before the pump may restrict inlet flow and cause pump noise, cavitation, fuel starvation, or unstable pressure. Use the 100-Micron Fuel Filter before the pump and the 10-Micron Fuel Filter after the pump.

Q: What does the 12V Inline Fuel Pump do?
A: The 12V Inline Fuel Pump moves fuel from the fuel cell toward the engine. This external inline pump supports custom return-style EFI fuel systems when installed with proper wiring, filtration, fuel-line routing, and pressure regulation.

Q: Is the 12v electric fuel pump enough for my engine?
A: The 12v electric fuel pump is rated up to 300 LPH under specified test conditions. Actual fuel delivery depends on fuel pressure, voltage, wiring, fuel type, line size, filter restriction, fittings, routing distance, and return-line design. Always match the pump to your engine’s actual fuel demand.

Q: Where should the 12V Inline Fuel Pump be mounted?
A: Mount the 12V Inline Fuel Pump below or near the fuel cell when possible. The pump should be installed on a stable surface, away from exhaust heat, moving parts, road debris, and impact areas. A short, unrestricted inlet path helps support more reliable fuel delivery.

Q: What does the 20–120 PSI Fuel Pressure Regulator do?
A: The 20–120 PSI Fuel Pressure Regulator controls fuel pressure by returning excess fuel back to the fuel cell. It helps maintain the selected system pressure, but it does not create fuel flow. Fuel flow is created by the pump.

Q: How do I set the 20–120 PSI Fuel Pressure Regulator?
A: Set the 20–120 PSI Fuel Pressure Regulator according to your fuel injectors, fuel rail, engine management system, and complete fuel-system requirements. After adjustment, verify pressure with a compatible gauge and inspect the system for leaks or pressure drop.

Q: What are AN Fittings used for in this Fuel Cell Kit?
A: AN Fittings connect the fuel cell, filters, pump, regulator, hard line, and adapters in the fuel system. The included AN fittings help create secure fuel-line connections when the correct size, flare surface, thread type, and sealing method are used.

Q: Should I use thread sealant or Teflon tape on AN Fittings?
A: Do not use thread sealant or Teflon tape on AN flare sealing surfaces. AN Fittings seal at the 37-degree flare, not at the threads. For separate NPT-threaded ports, use only fuel-compatible thread sealant when required.

Q: What fuel types are compatible with this Fuel Cell Kit?
A: This Fuel Cell Kit can be used with compatible fuel-system applications such as gasoline, diesel, methanol, and compatible race fuels. Any added hose, fitting, seal, O-ring, or replacement component must also be rated for the selected fuel.

Q: Can this Fuel Cell Kit be used with E85, ethanol, or methanol?
A: Alcohol-based fuels such as E85, ethanol, and methanol require careful compatibility checks. When flexible hose is added, PTFE fuel line is recommended because it has stronger chemical resistance than CPE hose. CPE hose may swell, degrade, or leak over time when used with alcohol-based fuels.

Q: Why do I need PTFE fuel line for E85 or alcohol-based fuels?
A: E85, ethanol, and methanol can break down some rubber-based or CPE hose materials over time. PTFE offers better chemical resistance, making it the preferred liner for alcohol-based fuels and many race fuel applications.

Q: Does the EVIL ENERGY Fuel Cell include a fuel level sender?
A: Yes. The EVIL ENERGY Fuel Cell includes a built-in 3–90 ohm fuel level sending unit. Before installation, confirm that your fuel gauge supports the 3–90 ohm resistance range.

Q: How do I wire the fuel level sender?
A: The yellow wire is the ground wire, and the green wire is the signal wire that connects to the fuel gauge sender input. Always verify your fuel gauge wiring requirements before connecting the sender.

Q: Does the 15 Gallon Fuel Cell need to be vented?
A: Yes. A 15 Gallon Fuel Cell must be properly vented for safe and stable operation. Incorrect venting can cause fuel smell, filling issues, pressure buildup, fuel starvation, or unsafe operating conditions.

Q: What does the internal anti-slosh foam do?
A: The internal anti-slosh foam helps reduce fuel movement inside the tank during acceleration, braking, and cornering. This can support steadier fuel pickup and reduce sudden fuel weight transfer in racing, drifting, and performance driving.

Q: Why is my fuel pump noisy or my fuel pressure unstable?
A: Common causes include incorrect filter order, restricted pre-pump flow, clogged filters, low voltage, poor ground, undersized wiring, blocked venting, sharp fuel-line bends, air leaks, or an incorrect regulator and return-line setup. Check the 100-Micron Fuel Filter, 10-Micron Fuel Filter, 12V Inline Fuel Pump, AN Fittings, and 20–120 PSI Fuel Pressure Regulator during troubleshooting.

Q: Should I pressure-test the Fuel Cell Kit after installation?
A: Yes. Pressure-test the complete Fuel Cell Kit before starting or driving the vehicle. Check every fitting, line, filter, pump connection, regulator port, fuel cell outlet, sender area, and return line for leaks or pressure loss.

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