I'm going to start off with a reminder: You've checked that you put on the AN-818 B-nut and 819 sleeve before starting the flare, right? Right! You've been warned! Firewall-aft (FWA), rigid fuel lines ...

Your Mustang's plumbing system manages functions important not only to driving, but also to driving safely. Brake lines, fittings, and valves must be able to withstand tremendous operating pressures.