Man, all this talk about leaking ARB air lines makes me wonder how good a mechanic the installer was. I've had mine going on 3 years now, and my Tracker has been in all kinds of situations, rocks, mud, deep sand, loamy dirt, freezing ice block filled water holes, and lots of Jersey swamp water. NEVER once had a leak in any airline or fitting. Careful, proper installation, coupled with good common sense routing of the airlines, as well as using some kind of protection on the exposed airlines , I just use that plastic wiring harness wrap over the majority of the airline, and a heat sheild covering where it's close to anything hot, will keep your airlines working properly without leaks. ARB also has an accessory trail side airline repair kit for those times when damage has occured to the lines or fittings. It comes with all the line and fittings needed to reline a diff ir two. $25. I've had mine in my trail spares since I've had my lockers in. I take it out and look at it once in awhile, brush off the dust.