alternate to steel cap
I replaced both front thrust arm bushings this weekend on my 2000 528i based on the jaw puller and cap solution (thanks for the great post). This worked like a charm on the first bushing but on the second bushing, the cap gave out (see pictures). So back to Lowes and scrounging around in the plumbing section I came up with a two piece replacement for the cap. The threaded cap (1 1/4") gave a much thicker steel base for the jaws bolt to dig in to. You can see the indent from the force needed to move the bushing in the picture of both pieces. The three inch diameter steel base (with 1/2" thread diameter) gave a nice broad area that made alignment with the bushing and jaws easier than the cap. Just another suggestion, worked great for me.