FAST® EZ-EFI® -6AN Fuel Return Line Fitting

If you find yourself making the switch from a carburetor to fuel injection, you will need to add a return fuel line port to your fuel tank. Thanks to FAST®, the leader in Fuel Air Spark Technology, you can now do that with only hand tools and no welding. The FAST® EZ-EFI® -6AN Fuel Return Line Fitting is the perfect way to easily add a -6AN fitting to any tank without welding or having access to the inside. By simply drilling a 1/2″ hole, the fitting installs against the tank from the outside. By then compressing the fitting’s aluminum body, much like a rivet, a mechanically secure, fuel tight seal is formed.

Compatible with any tank material up to ¼” thick, installing the fitting does not require access to the inside of the fuel tank. While primarily intended for fuel return, the fitting has a number of other potential uses such as oil return, power steering line return, vent, etc. The fitting assembly includes a billet aluminum body, an anodized -6AN fitting and a Grade 8 installation bolt for your convenience.

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About FAST®

In 2001, FAST® was acquired by the COMP Performance Group™ and moved its headquarters to Memphis, TN, to become the popular electronics company that we know today. After more than a decade in the performance aftermarket industry, FAST® is the recognized leader in advanced EFI technology. Now, not only does FAST® offer the components to adapt virtually any engine to fuel injection, it is also an emerging force in the ignition market. With the latest in easy-to-use electrical components, the experts at FAST® have everything that you need to make high-tech horsepower. 

Additional information about FAST® and its products can be found at or at 1.877.334.8355 M-F 7am-8pm CST. Also visit us on Facebook at, on Twitter at or on YouTube at

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