Posted 3/24/2020 18:32 (#8135779 - in reply to #8135100) Subject: RE: Head for a CAT 3406A?
Eastern Arkansas
Easy way to tell A and B apart, A has fuel pump mounted a foot or so back from he front cover with a built in driveshaft and housing that turns it. B the fuel pump is mounted to the front cover. It appears your engine is an A model.