wow 250.00 bucks for a 5.00 part damm thats just wrong i replaced the whole axle on the drivers side for 56.00 last yr for same problem cracked ring and about a month ago I replaced the ring only on the pass side it was really easy and I didnt even loosen the ball joint just took axle nut off took strut bolts out and got enough play to get axle thru knuckle and put new one on. from the looks of the rust at the crack they fail in stages as a small crack developed and then it just gets worse until a bump or what ever just makes it come loose. but if you can get under the car you can reposition the ring and i did that 70 miles from home and it held for another 2 weeks till i changed it but i guess all things are not the same.