Can somebody tell me where I can order a replacement retainer for the upper control arm bushings? It's the larger of two large metal discs that secure the two bushings on the torsion bar (with the upper control arm sandwiched between) into place. I had somebody replace the upper control arms a year and a half ago, and the bushings failed already with less than 10,000 miles. At first I thought it was just because he used cheap Meyle parts, so I ordered OEM replacements, but in the process of replacing both myself I noticed the failed side was lacking this larger piece that was still present on the other side, so that's what caused the bushings to fail catastrophically so soon.

If somebody's parting out a vehicle, it's a real easy part to remove and I'm happy to buy it, but I need it shipped fast ASAP. Otherwise, an online source or part number would be most appreciated!