Fuel & Intake Systems

Find complete fuel system solutions for LS swaps, EFI conversions, and custom performance builds. EVIL ENERGY offers fuel system kits, high-flow fuel pumps, regulators, filters, PTFE fuel lines, and AN fittings engineered for dependable fuel delivery, high-flow performance, and compatibility with gasoline, E85, and racing applications.

Which Fuel System Solution Fits Your Build?

Choosing the right fuel system depends on your engine type, fuel demand, and application. Whether you are completing an LS swap, upgrading an EFI setup, or building an E85 performance system, EVIL ENERGY provides matched fuel delivery components to help create a reliable and efficient setup.

LS Swap Fuel System

LS engine conversions often require upgraded fuel delivery components to replace factory connections and support custom routing. EVIL ENERGY LS swap fuel system solutions include fuel pumps, filters, regulators, fuel lines, and AN fittings designed for cleaner installation and reliable fuel supply.

EFI Fuel System Upgrade

EFI engines require stable fuel pressure and consistent flow to maintain performance. Fuel pressure regulators, fuel pumps, filters, and AN fuel lines work together to provide dependable fuel delivery for street cars, track builds, and custom engine applications.

E85 Fuel System Components

E85 and ethanol-based fuels require components designed for chemical compatibility and long-term durability. PTFE fuel lines, corrosion-resistant fittings, and properly selected fuel pumps help support reliable operation in high-flow performance applications.

What Components Are Needed For A Complete Fuel System?

A complete fuel delivery system typically includes several components working together to provide consistent fuel flow from the tank to the engine.

  • Fuel Pump — Provides the required fuel flow to support engine performance and fuel demand.
  • Fuel Filter — Helps protect injectors and fuel system components by removing contaminants. Explore fuel filter options.
  • Fuel Pressure Regulator — Maintains stable fuel pressure for consistent engine operation.
  • Fuel Line — Transfers fuel between the tank, pump, fuel rail, and engine.
  • AN Fittings — Creates reliable connections for custom fuel system routing.

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Featured Products

EVIL ENERGY PTFE Hose End Fitting for PTFE Hose Only (3/4/6/8/10/12AN) - Black - EVILENERGY[Straight,1PC]
EVIL ENERGY PTFE Hose End Fitting for PTFE Hose Only (3/4/6/8/10/12AN) - Black

Engineered for high-pressure, high-temperature fuel systems, the EVIL ENERGY PTFE Hose End Fitting delivers leak-proof performance for PTFE fuel lines in performance builds, LS swaps, boosted engines, and ethanol-based fuel setups. Made from 6061-T6 aluminum with a 360° swivel design, these AN fittings ensure a clean, secure, and easy-to-assemble connection—ideal for builders who demand durability and precision.

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$8.99
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[Black,Without Bracket] black inline evil energy fuel filter with directional arrow and multiple AN fuel line fittingsevil energy fuel filter kit with stainless steel inline fuel filter, AN fittings, and mounting hardware
EVIL ENERGY Inline Fuel Filter with 6AN 8AN 10AN Adapter and Bracket Universal 10/30/40/100 Micron - Black

[Application] Universal fuel filter, includes an6, an8, an10 adapters for different size applications. With mounting bracket keeps the engine bar stylish and clean.

  • [Material] Aluminum alloy fuel filter can and stainless steel filter element.
  • [O-ring] The o-ring provides a tight seal for fittings and end caps.
  • [Function] Can be used for filtering gasoline, diesel, etc. Captures contaminant particles of 10 micron and above to protect the fuel system of the vehicle.
  • [Feature] Removable design, easy to clean or replace filter element at regular time.
  • [Installation Tips] We have debugged the installation direction of the fuel filters before delivery. Please check and ensure the closed end of the filter element docks with the spring. Let the liquid flow following the arrow from the spring end to the other end, and the fuel filter will serve longer.
$23.99
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[20FT] EVIL ENERGY PTFE Fuel Line Kit, complete black hose & fittings set, 180-day return[16FT] EVIL ENERGY PTFE Fuel Line Kit, black braided hose, fittings, free shipping & return
EVIL ENERGY 4/6/8/10AN PTFE Fuel Line Kit | E85 Nylon Braided Hose | 16/20FT Black Black with Comprehensive Fittings

Three-Layer Construction: Our fuel lines are constructed with a triple-layer material for unparalleled performance and protection. The innermost layer is made of PTFE for maximum chemical resistance, a braided stainless steel layer for strength and durability, and an outer nylon layer for added abrasion resistance and protection.

Multiple Sizes: We offer our fuel lines in 4AN, 6AN, 8AN, and 10AN sizes, catering to the diverse needs of various fuel delivery systems.

Fitting Types: Our kit includes a variety of fittings at 0°, 90°, 45°, and 180° angles, ensuring versatility and flexibility during installation, allowing for custom routing in tight or complex spaces.

Precision Fit and Leak-Free Performance: The combination of the PTFE inner layer and the high-quality aluminum hose ends ensures a precision fit and leak-free connection, even under extreme pressure, providing a safe and reliable fuel system.

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[1 PC][2 PCS]
EVIL ENERGY AN Flare to AN ORB Male Fuel Rail Adapter Fitting
  • AN to ORB Conversion
    Converts AN flare fittings to ORB ports for fuel rails and aftermarket fuel components.
  • High Pressure Capability
    Rated up to 1500 PSI for reliable performance in fuel and oil systems.
  • Leak Free Sealing Design
    37 degree AN flare seal combined with ORB O ring ensures a secure, leak resistant connection.
  • CNC Machined Aluminum
    Made from 6061 T6 aluminum with black anodized finish for corrosion resistance.
  • Wide Size Availability
    Multiple AN sizes available to support custom fuel system layouts.
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FAQs about Fuel & Intake Systems

What's the difference between a carbureted and EFI fuel system?

A carbureted system mixes fuel and air mechanically at low pressure (typically 5-12 PSI) and needs a simple pump and regulator.
An EFI (electronic fuel injection) system runs much higher pressure (20-120 PSI) and requires a high-flow pump, injectors, and a dedicated ECU to control fuel delivery precisely — which is why LS swap kits bundle a stronger pump and adjustable regulator by default.

  • Most naturally aspirated LS engines (LS1-LS6, up to ~500hp) run well on a 255-300LPH pump. Boosted or high-horsepower builds (600hp+) should step up to a 340-405LPH high-flow fuel pump to avoid fuel starvation under load. Always match pump flow to your target horsepower, not just your engine size

PTFE line is rated for higher temperatures and pressure (up to 1,500 PSI, -76°F to 446°F) and is fully E85-safe long-term, making it the standard choice for EFI, turbo, and race applications.
CPE (rubber-based) line costs less and is easier to route since it isn't as rigid — a solid choice for daily-driven, naturally aspirated street builds.

Not always. A fuel cell is worth adding when your stock tank can't keep the pump submerged under hard cornering/braking (common in track builds), when you've swapped in a fuel system with an external pump that needs proper pickup, or when you want extra capacity for track days. Daily-driven street builds usually don't need one.

Yes. EVIL ENERGY's PTFE fuel lines, fuel pumps, filters, and regulators across this collection are rated for gasoline, diesel, and E85/ethanol blends.

Standard rubber (non-PTFE/CPE-rated) hose should be avoided with E85 since ethanol degrades ordinary rubber over time.

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