fuel rail threads size? leak

[zdatsupra]

I finally isolated my seeping fuel leak.
The an adapter on my rail has a minute ding in it causing a seal problem that just lets a slight film of gas seep down the rail...

It looks like the adapter is a 6an to 1/2 20 threads.
Can someone confirm? Is that the right thread on the fuel rail?

The adapter then connects to the 90 degree swivel..

I got the aem regulator from someone on the supras list years ago, cannot remember his name...

 

[aljordan]

The stock regulator thread is 12x1.25. It the forward most hole on the rail.

 

[zdatsupra]

The stock regulator thread is 12x1.25. It the forward most hole on the rail.

thanks, the earls an fitting for that is number, 991945. Works nicely to adapt to 6 an hose..