1/4" - 9/16" brake fitting adapter?

[kustomkyle]

Looking to find an adapter to put on the end of a replacement 1/4" brake line to go into the proportioning valve on the driver's side of a Regal. Short of starting completely fresh with a 25' roll of line, flaring tool, and individual fittings, I just want to put in a premade line. So far I've had no luck, as the biggest I've found is a 1/4" - 5/16", Edelmann part#258450. I'm assuming all G-bodies are like this, Prior to having to replace this blown line, I assumed replacement would be straightforward and that all the lines were 3/16" (NOT).

 

[kustomkyle]

Problem appears to be solved. For future reference in case anyone else encounters this, the correct fitting is Edelmann part#258403. What is confusing is that this fitting is listed as a 1/4"x3/16", but it is in fact a 9/16" male external thread with a female 1/4" internal thread to insert your 1/4" brake line.

I referred to the fitting going into the "proportioning valve", but a better term would be the LF junction block. It is the part that has the sensor that tells your "BRAKE" light to come on when there is an issue (like a blown line).

 

[kustomkyle]

Ended up using Edelmann fitting #121049 instead of the 258403 adapter. The 258403 was, in fact, a 1/4" female, 9/16" male external thread with a 3/16" hole. Preferably, I would have liked to use a 1/4" female, 9/16" male external thread adapter with a 1/4" hole, but they don't exist for whatever reason.
Part#121049 is not an adapter, but rather a fitting, 1/4" with 9/16" external male thread that requires cutting and re-flaring your replacement line. I was told the adapter with the 3/16" hole "probably" would still work, but I decided against it.