Steel Brake System Adapter, -04 Male JIC 37 deg Flare To 3/8-24 Female 42 deg Inverted Flare, Straight

Yeah, that's exactly the kind of transition this fitting handles. One end is a -04 male JIC with a 37 degree flare, and the other is a 3/8-24 female with a 42 degree inverted flare. So if your brake line side is the inverted flare and your hydraulic supply side is JIC, this straight adapter connects them directly without any intermediate fittings.

This straight adapter fitting can work in a wide range of hydraulic applications, so it could be suitable for your brake lines. Just be sure the -04 Male JIC 37 deg Flare and 3/8-24 Female 42 deg Inverted Flare connections are compatible with your truck.

Yes. One end is a 3/8-24 female 42 degree inverted flare for the brake line, and the other end is a -04 male JIC 37 degree flare to mate with a -04 JIC female swivel hose end.