From VIN 30001 to 40193

This is the top radiator hose.  1977-1980  Silver Shadow, T-series, Shadow II, T-2, Silver Wraith II (VIN 30001 to 40193)

This is the bleed hose between the header (expansion) tank and the radiator Shadow (14954-40491), Wraith II (30081-41648), T Saloon (14986-26634), T2 (30046-41573), Camargue (30015-33187), Corniche (14991-50757)

This is the bypass hose between the header tank and the water pump.   1966-1980 RR Silver Shadow I, II & Bentley T1, T2

This is the bottom hose for all Series 2 models. 1973-1981 (VIN 14954-50757)