Standard rear differential removed from a bmw e91 325d manual. I removed the whole unit and replaced with a version that had a quaife lsd fitted, this is the original one that came with the vehicle and was removed at approx 110,000 miles. during an inspection at autotechnik Lutterworth ( BMW specialists) they recommended the front oil seal should be replaced. Working order aside from the oil seal as mentioned. Private sale and no warranty implied or given. Thanks