Cadillac Engine Bracket. I believe, but am not sure, that this is the rear smog air pump bracket from a 472 or 500 c.i. Cadillac engine. My recollection is it is from the 70's. Powdercoated gloss black. May have minor imperfections as this was a used bracket but it is in nice condition. Not used since being powdercoated. Please do your own research on applications, the info I have is my best guess. NOTE: Other brackets may be needed to work with this bracket and it may not even be for the smog pump. FREE shipping to lower 48.