This is an Exhaust Gas Recirculation Valve. 2 Per Car (Sold Each) 1976-1980 Corniche, Shadow, II T2, Wraith II (from VIN 30001 onward) 1980-1989 Corniche, Eight, Mulsanne, Spirit, Spur (up to VIN...

This is the accumulator that mounts next to the fuel pump. Turbo R (from VIN 20001 to 23935) Mulsanne, Spirit, Spur (from VIN 20003 to 27798)  

This is the fuel accumulator that mounts next to the main fuel pump.  From VIN# 24519 to 50000 Turbo R  VIN# 30001 to 50000 All Models