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Fuel line feeding the auxiliary power unit of an Airbus A340.

A fuel line is a hose used to bring fuel from one point in a vehicle to another or from a storage tank to a vehicle. It is commonly made of reinforced rubber to prevent splitting and kinking.

The United States Environmental Protection Agency defines a fuel line as "all hoses or tubing designed to contain liquid fuel or fuel vapor. This includes all hoses or tubing for the filler neck, for connections between dual fuel tanks, and for connecting a carbon canister to the fuel tank. This does not include hoses or tubing for routing crankcase vapors to the engine's intake or any other hoses or tubing that are open to the atmosphere."[1]


  1. ^ Definitions and Other Reference Information, Code of Federal Regulations, Title 40, Volume 31, Revised as of July 1, 2006, From the U.S. Government Printing Office via GPO Access, CITE: 40CFR1051.801, p. 667.