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How to Choose the Right Fittings for Your Vehicle

03 November 2025

Complete Guide to Hoses & Fittings: Types, Functions, and How to Choose

14 August 2025

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[PTFE With Fittings,15 Gallon][CPE]
EVIL ENERGY Fuel Cell Tank Kit-Efficient Fuel System Solutions 5/10/15 Gallon

This comprehensive kit includes: 

  • 5/10/15 Gallon Fuel Cell Tank
  • 20-75PSI&75-120PSI fuel pressure regulator
  • 300LPH high flow fuel pump
  • 6AN 20FT CPE/PTFE Durable fuel lines (optional fittings)
  • 10&100-micron fuel filter
  • 50mm Fuel Filter Mounting Bracket*2
  • 60mm Fuel Filter Mounting Bracket*1
  • necessary fittings for easy installation. 
$90.24
$90.24
$123.99
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[30-70PSI][30-70PSI,Black]
EVIL ENERGY Fuel Pressure Regulator 6AN EFI Bypass Return Adjustable 20-140psi Black&Red - Red

Durable Construction: Precision-machined 6061-T6 aluminum alloy, corrosion-resistant and heat-tolerant (withstands harsh engine bay conditions), ensuring long-term reliability.

EFI System Compatibility: Fits most vehicles' electronic fuel injection (EFI) systems; maintains stable fuel pressure for optimized combustion, performance, and fuel economy.

Fuel Compatibility: Works with gasoline, E85, and alcohol/ethanol; not compatible with diesel fuel; note: nylon braided fuel lines are not E85-compatible (use PTFE-lined hoses for E85).

Bypass Return Design: Prevents pressure spikes during acceleration, boost, or high-load scenarios, protecting fuel injectors and rails from damage.

All-in-One Kit: Each variant includes essential components (fuel pressure regulator, pressure gauge, fittings, sealant tape, tools like Allen keys); no extra purchases needed for standard installation.

Easy Installation & Tuning: Adjust pressure via top set screw (clockwise = increase, counterclockwise = decrease); use thread sealant tape on NPT gauge port to avoid leaks; professional installation highly recommended (especially for high-pressure variants).

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$119.99
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A guide on how to choose the right fittings, showing black EVIL ENERGY AN fittings installed on braided hoses in a performance engine bay.

How to Choose the Right Fittings for Your Vehicle

Amber 0 Comments

Introduction: Why Fittings Matter in Performance Systems When building or upgrading a vehicle, one of the most overlooked components is also one of the most critical — fittings. These small connectors play a vital role in every fuel system, oil system, and cooling system, ensuring that fluids move safely and efficiently through your engine...
Complete-Guide-to-Hoses-Fittings-Types-Functions-and-How-to-Choose EVILENERGY

Complete Guide to Hoses & Fittings: Types, Functions, and How to Choose

Amber 0 Comments

When modifying or repairing a vehicle, hoses (lines) and fittings are essential components you simply can't overlook. Whether you're working on the fuel system, cooling system, or vacuum lines, choosing the right type of hose and matching fittings directly affects your build’s sealing performance, safety, and long-term durability. This guide will walk you through...

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