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EFI SAE quick connect fitting to adapt to AN lines

Female SAE quick connect fitting to AN. 

These quick connect fittings are perfect for adapting to LS Feed and Return line fittings on either the intake with built in regulator or to adapt to the corvette style LSx engine regulator. Many factory fuel sending units, pressure sensors, and E85 sensors now utilize EFI quick connects. 

These fittings feature a screw on end cap for a secure installation that prevents the fitting from coming loose of the quick connection. 

On LS intakes the feed is 3/8 and return is 5/16.

On the corvette style regulator the feed is 3/8 and return is 5/16.

Use the 5/16 quick connect to AN8 fitting for adapting a return style LS system to a higher flow fuel system install. 

Works with Hot Rod fuel hose AN sized fittings. 


Customer Reviews

Based on 21 reviews
Michael McGregor
3/8 quick to 6an

For some reason these 3/8 do not fully seat on the fuel filter provided in the ls returnless kit, or on the fuel rail. It looks like it isn’t bored deep enough. 2 fitting from original kit , and 2 replacement fittings that were sent to replace them.

Hi Michael,

That is by design there is a small cut out in the nut that goes on that fitting. If you place the raised lip into the cutout and then thread the fitting together you will be good to go. I will send you a photo by email to show you what I mean.


Aaron Goble
Awesome products ..excellent customer service..

Would highly recommend the product and one guy garage...went above and beyond to make me kit for my 331 supercharged foxbody...thanks guys

Jay Woodlee
very impressed

Super high quality, very low price, Great customer service. It's a no brainer !

Good parts with good shipping

0 complaints on the order all around. Takes a minute to learn how to cut the hoses. Have run meth, av fuel, and ATF through them.

Christopher Chadwick

EFI Quick connect fitting w/ Screw end cap