what is this part called on a gsr head? i need it

ok i dont have a pic but try to bear with me,ok…there are 3 bracket like pieces that bolt across the cams perpendicularly, well i have 2, the seller was missing one, whats it called? the oil runner plates bolt on top of these. i need the once closest to the cam gears, can you help me?

wade

They are called Camshaft Holders or cam caps. If you are missing one the head is useless and if you find one the head is still useless unless you get it line bored.

yup, that is correct. Each holder is precision machined to the head.