This is an OEM replacement LCA socket for some e46 3 series. At 103,000 miles my originals had shot up pretty well and I was getting vibration through the steering wheel that full wheel balancing didn't quite eliminate. Easy to install, just use some soap and water to apply to the LCA (do not use grease/oil). To pull off the old one you needed a 3-armed puller and a rubber hammer / rubber mallet. I'm glad I spent a little more on these bushings including the bodies.