Here is a side by side of the new LuK throwout bearing and carrier. It is on the right the one on the left is an autozone model the stealership installed 5 months ago. The ear broke off the cheap plastic casting that surround weak metal insides. It is nearly all plastic. The LuK seems to be of very high quality. The ears are made from stamped steel that should have no chance to snap off. It also appears everything contacting the bearing itself is metal. The center is a plastic material that is held in place securely by 4 folded steel tabs that connect the two metal halves with the plastic running the whole surface area. I like it a lot and obviously would rather have it than the broken pos next to it.