The part number for the head is SBA111016622. This supersedes 83941096, 83943160, SBA111016610, SBA111016611, SBA111016620, SBA111016621. It is listed as fitting the 1110, 1120, 1210, 1215, 1220, and 1310.
For looking up the parts for a CNH item I use the OEM parts books at mycnhstore.com...