The Dangers of Vaping: Why Every Build Needs Earl’s Vapor Guard

For as much fun as cars can be to tinker with, modern fuels can do a real number on a vehicle’s rubberized fuel lines. Even steel-braided hoses are prone to deterioration over time. Fuel vapors and leakage alike can quickly cause a vehicle fire, which is why fuel hose inspection and replacement are so commonplace and tedious. How bad can fuel-vapor leakage be though? Well, according to Holley Performance Products, a 24-inch piece of traditional rubber fuel hose loses about one gallon of fuel per year through permeation alone.

Every EPA-approved fuel blend on the market relies upon some form of additive too, all of which are harmful to the rubberized hoses in our vehicles. As fuel hoses decompose from within, they begin to leak, leaching out vapors and contaminating the environment in which we breathe. Extreme circumstances can even lead to hose particles becoming lodged in fuel injectors and carburetor components.

This dangerous and financially damaging issue gave the brainiacs over at Holley the perfect excuse to look for a solution, and find one they did. The E85-Friendly Vapor Guard from Earl’s offers a hose solution that is affordable, effective, long-lasting, and pretty damn attractive to boot.


A close look at the Earl’s Vapor Guard fitting. 

E85 isn’t the only fuel that the Vapor Guard hose system is compatible with either. Holley has made Earl’s Vapor Guard hose systems so resilient that they can handle virtually any form of fuel you can throw at it. Regular and premium pump gas, diesel, biodiesel, 100-percent methanol, ethanol, and gasohol fuels are all compatible.

According to Holley, the secret to Vapor Guard’s success lies within its trifecta approach to preventing hose deterioration. At the center resides a core “Primary Barrier Layer,” which resists the damaging effects of heat and the fuel itself. This is encapsulated by a centralized “Vapor Guard Barrier” that utilizes a thermoplastic to isolate and prevent vapors from escaping. Wrapped around it all is an “Exterior Cover Barrier” that shields the internal hoses, resisting the unwanted advances of heat, ozone, airborne impurities, and even chemicals.

Each end of the Vapor Guard system from Earl’s relies upon trick hose ends with a specialized “retention bead.” This guarantees that the fuel hose retains adequate pressure at all times, greatly reducing the risk of hose liner damage. Black Brite-dip anodized for appearance and corrosion purposes, this system offers ultra-easy installation procedures. Just cut, affix, and tighten!


Available in a slew of different customizable configurations, and loaded with accessory options, Earl’s Vapor Guard fuel hose systems are hands-down the best investment you can make from a fuel line solution standpoint.

Here are some additional facts that may make you want to consider making this inexpensive upgrade a part of your next project build.

  • Multi-layer rubber hose designed to withstand the corrosive properties of modern fuels
  • Multi-fuel compatible: Approved for use with leaded and unleaded Gasoline, Diesel, Biodiesel, E-85, Methanol, Ethanol, and gasohol fuels
  • A two-foot section of Earl’s Vapor Guard saves one gallon of gas each year from permeation alone, as compared to traditional rubber hose.
  • Primary Barrier Liner – initial layer offers high resistance to heat and aggressive fuels
  • Vapor Guard Barrier – Thermoplastic layer provides superior fuel isolation significantly reducing vapors from escaping through the hose
  • Reinforcement braid-aramid material – (EFI hose only) is used to provide the higher-pressure rating that is required with fuel injection
  • Exterior cover – provides extreme tolerance of heat and ozone
  • Choose from carburetor or high-pressure EFI hose
  • Hose available in 5/16- and 3/8-inch

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About the author

Micah Wright

Raised on LEGOs by grandfathers who insisted on fixing everything themselves, Micah has been a petrolhead in training since age four. His favorite past times include craft beer, strong cigars, fast cars, and culinary creativity in all of its forms.
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