Secondhand bare one-piece radiator cowl, as used on all 1974-on Minis. Can be used on earlier Minis too, in place of the two-piece shroud, but you must have the appropriate hardware for the one-piece unit. Photo shows a freshly painted one. Part supplied will normally require blasting and painting. See ARP1174 for new version.
Use HDWB2742 to secure the radiator to the housing; this is the standard thread screw. However, some replacement radiators used a metric screw, which was never original. The metric screw is HDWB2742M.