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

Built for brake system hookups, it bridges a -04 male JIC 37 degree flare end over to a 3/8-24 male 42 degree inverted flare end in a straight body, so you are converting both the thread style and the flare type without adding a bend.

This adapter is designed to provide the correct connection between -04 male JIC 37° flare fittings and 3/8-24 male 42° inverted flare fittings, which are often found on automotive brake lines.

That's exactly what this fitting is built for. One end is a -04 male JIC with a 37 degree flare, and the other is a 3/8-24 male with a 42 degree inverted flare. Those two thread and flare configurations show up together pretty often in brake line work where hydraulic and automotive hardware meet at the same junction. The straight body keeps things tidy in tight spaces too, so you're not fighting the routing.