Special Tool #83 30 0 491 781 includes the following

24 5 361 Threaded bush
24 5 362 Union nut
24 5 363 Bush
24 5 364 Nut
24 5 365 Slip sleeve
24 5 366 Bush

the retail price is $46.95 and can be ordered from any BMW dealership. There are currently 19 of this tool in the country (18 in warehouses) and 1 shown in stock at Keeler BMW / Keeler MINI NY