AC PERFORMANCE Aluminum -6 AN Male Flare to 5/8 x 18 Male Thread Inverted Seat Adaptor Fittings Male Inv Flare Connector, Black Pack of 2

Used on fuel line for my pickup and I have no issues with it. Tightened up fine and has not leaked.

Worked as advertised

This worked perfectly for my pre-1996 4L80E

Fit perfect in my 1979 SBC 350 mechanical fuel pump outlet

These were the right thread for my stock gm raidator. Radiator is out of a 91 suburban going into a 85 c10 running a 4l80e transmission with a 5.3ls using aftermarket lines

Nice fittings, they did the job needed.

Fast shipping, good price.

Works as it should, fits good

Shipped fast, item as described

Used for the fuel line from the mechanical pump to the carburetor.... SB 350. Not sure what the pressure pump puts out but the fittings fit good and no leaks so far. This sis first time I used AN fittings so far easy to work with and happy with the product.