Stainless Steel Adapter, 9/16-18 Male JIC 37 deg Flare To 9/16-18 Female JIC 37 deg Flare Swivel, 45 deg Elbow

That 45 degree angle combined with the swivel on the female end makes it a solid pick for exactly that kind of situation. You can adjust the female side to align with your existing line without having to fight the whole assembly into position. Both ends are 9/16-18 JIC 37 degree flare, so as long as your fittings match that thread and flare spec, it'll drop right in. The stainless construction holds up well where corrosion is a concern, which is worth noting if you're running this anywhere near moisture or chemicals.

You are looking at a 45 degree elbow adapter with a 9/16-18 male JIC 37 degree flare on one end and a 9/16-18 female JIC 37 degree flare swivel on the other, so the thread size matches on both connections.

Designed for hydraulic applications needing corrosion resistance, this stainless steel adapter should offer good durability in tough environments.