An AN8 45° hose end for PTFE-lined braided hose. AN8 typically handles fuel feed on higher-demand engines, oil cooler runs, breather and catch-can plumbing and pump returns, and at this size the hose is noticeably stiffer than AN6 — which is exactly where a 45° earns its place over a 90°, allowing a sweeping change of direction rather than a tight one. The olive-and-socket-nut design seals on the PTFE liner itself. When assembling, ease the braid back, seat the liner fully against the olive shoulder, and confirm no braid strands are caught underneath before tightening the nut.