This upper bearing pin is for the early Series 1 cars with non-compliant front suspension that have four pins and bushes which mount the upper lever (wishbone) arms to the front sub-frame. 1966-1972...

This is the front suspension kit for the upper ball joint.  1965-1980 Silver Shadow, T-series, Shadow II, T-2, Silver Wraith II 1980-1998  Silver Spirit, Sliver Spur, Mulsanne, Turbo R,...

This is the front suspension lower ball joint.  Sold each 1966-1980 All Models 1980-1998 All Models

This is the front suspension upper ball joint.  (sold each) 1966-1980 (VIN 1001-41686) 1980-1998 (From VIN 01001 onwards)