This is the rear hub adjusting nut.  Usually required when changing out brake rotors. When adding the nut you may need to replace O ring (UG11161) 1966-1980 VIN 1001-41686 1980-1998 From...

This is the felt needed when replacing the rear hubs.  1966-1980 Silver Shadow I,II,III, T-series, Silver Wraith II 1981-1998 Silver Spirit, Silver Spur, Mulsanne, Turbo R Pre...

This is the Hub o ring for the rear hub. 1966-1980 Silver Shadow I,II,III, T-series, Silver Wraith II 1981-1998 Silver Spirit, Silver Spur, Mulsanne, Turbo R Pre Arnage  

This is an outer rear wheel bearing. Cup and Cone are sold together. 1966-1980  Silver Shadow, T-series, Shadow II, T-2, Silver Wraith II 1980-2003  Silver Spirit, Silver Spur, Mulsanne,...

This is the .875" x .2195" thick woodruff key. 1966-1980 All Models - Sits in the Rear Hub Axel 1981-1990 Mulsanne, Spirit, Spur, Corniche up to VIN 31510 - Final Drive